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Articles 61 - 90 of 255
Full-Text Articles in Physics
New Technology Creates New Lightscape, Jianzhen Qiu, Shuoxian Wu
New Technology Creates New Lightscape, Jianzhen Qiu, Shuoxian Wu
International Building Physics Conference 2018
Light is a key element of our world’s beauty. Chinese scholar Wu Shuoxian put forward the concept of “Lightscape”, and proposed its research as a parallel discipline of the “Soundscape”. As a special aspect of the visual-scape, lightscape can give us a comprehensive and multi-disciplinary perspective of living environment. Many traditional lightscape cases have always been remembered as the representations of specific regional cultures. This article presents several cases of modern lightscape created with new technologies and methods. Included in these cases are: outstanding lightscape and art installments created by artists using light as a key element and fulfilled with …
Preliminary Monitoring Results Of Ventilated Heavyweight Building Envelope From Recycled Aggregate, Marina Bagarić, Ivana Banjad Pečur, Bojan Milovanović
Preliminary Monitoring Results Of Ventilated Heavyweight Building Envelope From Recycled Aggregate, Marina Bagarić, Ivana Banjad Pečur, Bojan Milovanović
International Building Physics Conference 2018
Potential of recycled aggregate concrete (RAC) has already been acknowledged by many researchers, but the focus was primarily on its mechanical and durability properties at material level. If the focus is shifted to element and whole building level, then the question can be raised; how building envelopes made from RAC behave when exposed to real environment? The present paper describes an experimental set up to monitor hygrothermal behaviour of one three-storey family house built with prefabricated ventilated sandwich wall panels made from recycled concrete and recycled brick aggregate. This type of building envelope can be classified as a heavyweight envelope. …
Pcm-To-Air Heat Exchangers For Free Cooling Applications, Mohamed Dardir, Mohamed El Mankibi, Fariborz Haghighat
Pcm-To-Air Heat Exchangers For Free Cooling Applications, Mohamed Dardir, Mohamed El Mankibi, Fariborz Haghighat
International Building Physics Conference 2018
Applications of PCM-to-air heat exchangers (PAHXs) were discussed in literature for free cooling application due to their latent thermal storage abilities. This paper aims to justify the generalization of a numerical model of PAHX and to compare the thermal performance of two different configurations of PAHX system. A generalized numerical model is developed and validated based on general apparent heat capacity method. The validation results show good agreement of the generalized approach in terms of averaged error with the experimental data. Model potential and limitations are discussed, and further recommendations are proposed to improve model accuracy. The paper ensures the …
Sensitivity Analysis Using The Swmm Lid Control For An Extensive Green Roof In Syracuse, Ny, Lucie L. Worthen, Cliff I. Davidson
Sensitivity Analysis Using The Swmm Lid Control For An Extensive Green Roof In Syracuse, Ny, Lucie L. Worthen, Cliff I. Davidson
International Building Physics Conference 2018
Green roofs are a popular form of sustainable drainage infrastructure. They provide many environmental benefits, such as reducing peak urban stormwater runoff by enabling retention and evapotranspiration similar to natural conditions. Each green roof has unique hydrologic behavior based on physical properties of its growth medium, types of vegetation, structural design, and climate. To improve the application of green roof technology at a site, there is a need to predict stormwater mitigation for several designs before commencing green roof construction. The Storm Water Management Model (SWMM) includes a low impact development control module which makes it possible to model the …
Review Of The Sky Temperature And Solar Decomposition, And Their Impact On Thermal Modeling, Farhad Hemmati, Fitsum Tariku
Review Of The Sky Temperature And Solar Decomposition, And Their Impact On Thermal Modeling, Farhad Hemmati, Fitsum Tariku
International Building Physics Conference 2018
Performing accurate hourly building energy modeling requires presence of reliable boundary conditions. The required data for energy simulation model entries are exterior air temperature, exterior air relative humidity, solar radiation, sky temperature, wind velocity and cloud cover. Unfortunately, most available measured solar energy data is in the form of global horizontal radiation. Moreover, measured night sky temperature is normally not available. Proper energy modeling of a full building requires to have accurate solar radiation intensity on angled building envelope assemblies as well as precise sky temperature data available. In this study, among several available models, three hourly horizontal global solar …
Simulation Of Building Physics For Beginning Design Students, Alexander Timmer
Simulation Of Building Physics For Beginning Design Students, Alexander Timmer
International Building Physics Conference 2018
Concepts such as heat transfer, stack effect, natural ventilation, and other problems related to building physics are taught to beginning design students through architectural examples, deterministic diagrams, and rules of thumb. Unlike the approach to teaching form, which involves exploration and iteration within a studio environment, often suspending disbelief to allow exploration, these exercises see architecture through the lenses of optimization, equilibrium, and objective outcomes. They are taught as steady state concepts. Instead of leaning on teaching techniques derived from an engineering standpoint, often technocratic and deterministic, it would serve beginning design students well to explore these concepts through experimentation …
The Design, Construction And Commissioning Of A Small Scale Dynamic Calibrated Hot Box (Chb), Timothy P. O’Leary, Aidan Duffy
The Design, Construction And Commissioning Of A Small Scale Dynamic Calibrated Hot Box (Chb), Timothy P. O’Leary, Aidan Duffy
International Building Physics Conference 2018
Sustainable construction and in particular the sustainability of materials is a global issue with legislation on material properties and product performance at the forefront. In traditional constructed buildings however, it can be extremely challenging to get accurate data on performance. The variability of building materials design, manufacture and construction from different eras is substantial, even within local areas due to the vernacular nature of construction from these periods. Material properties testing can be expensive and is not always readily available when required and is therefore often ignored, particularly in the retrofitting of historic buildings. This can have major adverse effects …
Study On Multivariate Regression Model Of Indoor And Outdoor Particulate Pollution In Severe Cold Area Of China, Yang Lv, Haifeng Wang, Yuwei Zhou, Tongke Zhao, Bin Chen, Lei Zhang, Qi Zhao
Study On Multivariate Regression Model Of Indoor And Outdoor Particulate Pollution In Severe Cold Area Of China, Yang Lv, Haifeng Wang, Yuwei Zhou, Tongke Zhao, Bin Chen, Lei Zhang, Qi Zhao
International Building Physics Conference 2018
At present, the widespread existence of haze phenomenon has a serious impact on indoor air quality. Indoor particulate pollution has been paid more and more attention by the society. However, the correlation and diffusion mechanism of indoor and outdoor particulate matter are still controversial. In order to explore the correlation between indoor and outdoor particulate matter of different building types in heating season and non-heating season, the indoor and outdoor particulate concentrations and meteorological parameters of 110 stations in severe cold area of China were monitored by experiments. The analysis shows that indoor and outdoor temperature, humidity, air velocity, wind …
The Effect Of Human Walking On Distribution Characteristics Of Indoor Particulate Matter, Yang Lv, Haifeng Wang, Hiroshi Yoshino, Hiroshi Yonekura, Rie Takaki, Genta Kurihara
The Effect Of Human Walking On Distribution Characteristics Of Indoor Particulate Matter, Yang Lv, Haifeng Wang, Hiroshi Yoshino, Hiroshi Yonekura, Rie Takaki, Genta Kurihara
International Building Physics Conference 2018
In modern society, house dust particulate matters pollution had become serious. Ventilation is an important method for removing house dust particulate matters and it is very important to explore the removal efficiency of house dust particulate matters under different ventilation modes. This study analyses the removal effect of house dust particulate matters under the two typical ventilation modes called ceiling exhaust and slit exhaust strategy through experiments and date analysis. In the process of experiments, riboflavin particles were used as the house dust particulate matters, instantaneous microbial detection (IMD) was used to measure the house dust particulate matters. Walking test …
Thermal Performance Analysis Of Traditional Housing In Albania, Rudina Belba, Sokol Dervishi
Thermal Performance Analysis Of Traditional Housing In Albania, Rudina Belba, Sokol Dervishi
International Building Physics Conference 2018
This paper introduces the results of a one-year research, to gather and analyse data on the traditional housing buildings in Kukes region, Albania. The energy performance and the thermal comfort conditions in five different buildings were examined. The Design Builder Energy simulation software was used to analyse the thermal performance of the selected typologies. Detailed construction activity and weather information was applied in modelling the houses. Simulation results showed that these buildings require only heating during the winter. As for the first villa, seven improvement scenarios were applied and examined. The same scenarios incorporate the use of thermal insulation of …
Ventilation Potential Assessments For Residential Building Arrangements Based On Exceedance Probability Analysis, Wei You, Lian Tang, Wowo Ding
Ventilation Potential Assessments For Residential Building Arrangements Based On Exceedance Probability Analysis, Wei You, Lian Tang, Wowo Ding
International Building Physics Conference 2018
In this study, the building ventilation potentials were assessed at building group level. Exceedance probability analysis was applied to estimate the uncertainties associated with the influence of climate on wind environment. The criterion was proposed based on building facade pressures. Tw o typical residential building arrangements were investigated. Simulation results show that facade pressure based exceedance probability are efficient in assessing the natural ventilation potentials of building groups and building height variations are important for improving building natural ventilation potentials.
Uncertainty In Building Energy Performance Characterization: Impact Of Gas Consumption Decomposition On Estimated Heat Loss Coefficient, Marieline Senave, Glenn Reynders, Behzad Sodagar, Dirk Saelens
Uncertainty In Building Energy Performance Characterization: Impact Of Gas Consumption Decomposition On Estimated Heat Loss Coefficient, Marieline Senave, Glenn Reynders, Behzad Sodagar, Dirk Saelens
International Building Physics Conference 2018
Characterization of building energy performance indicators such as the Heat Loss Coefficient (HLC) based on in-situ measurement data calls for thorough building physical insight, a well -designed measurement set-up to collect sufficient, qualitative data and adequate data analysis methods. On-board monitoring may be an alternative for dedicated experiments to perform the data collection task. This paper analyses the sensitivity of the end-result of the characterization, the H LC estimate, to flaws in the monitoring data set. More specifically, the impact of not installing submeters to disentangle the gas consumption for space heating and the production of domestic hot water is …
Energy Flow Through The Onondaga County Convention Center Green Roof In Syracuse, Ny, Alyssa Pizzi, Cliff I. Davidson
Energy Flow Through The Onondaga County Convention Center Green Roof In Syracuse, Ny, Alyssa Pizzi, Cliff I. Davidson
International Building Physics Conference 2018
Buildings in the Northeast U.S. with large interior open spaces and high ceilings require substantial amounts of energy to heat and cool the spaces. The objectives of this experiment are to model the heat flux across different layers of a green roof and to estimate the thermal resistance of the layers. The project will examine conditions in winter and summer, considering air temperature and snow cover on the roof. The scope of this study includes measurements of the transfer of energy through the green roof on the Onondaga County Convention Center in Syracuse, NY. The methods include collection of data …
Determination Of Lead Dust Fall Rates During Deconstruction Of Wood Frame Buildings In An Urban Region In The Northeastern United States, Paul Crovella, Marc Delaney, Melisa Kohan
Determination Of Lead Dust Fall Rates During Deconstruction Of Wood Frame Buildings In An Urban Region In The Northeastern United States, Paul Crovella, Marc Delaney, Melisa Kohan
International Building Physics Conference 2018
Title: Lead dust fall deposition rates during deconstruction of wood frame buildings in an urban region in the Northeastern United States. Objectives: Determine the lead dust fall deposition rate due to hybrid deconstruction (separation and removal of building components) of wood-frame structures, and compare that to the lead dust fall deposition rate from demolition (compression and collapse of building components). Scope: A city block with a total of 11 wood-frame structures was selected as the location for the deconstruction leadfall testing. Testing was done during the deconstruction of 7 of the 11 pre-1950 homes (mean construction year 1928, mean floor …
Improving Durability Of Wooden Beam Bearings In Inside Insulated Walls By Tempering The Beam’S Heads, Paul Wegerer, Thomas Bednar
Improving Durability Of Wooden Beam Bearings In Inside Insulated Walls By Tempering The Beam’S Heads, Paul Wegerer, Thomas Bednar
International Building Physics Conference 2018
Improving durability of wooden beam bearings after a thermal renovation via interior insulation is highly demanding for planners. Because of an isolated thermal bridge in the area of the wooden beam head the risk of condensation water forming in this area increases after installing interior insulation. The problem with wooden beam ends has been analysed increasingly in the last few years by many research institutions as wooden ceiling constructions are common in existing buildings. Furthermore, thermal renovation makes a vital contribution regarding improving the energy-efficiency of existing buildings. In this paper a method to temper wooden beam ends is introduced. …
Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig
Hygrothermal Performance Of A Hygroscopic And Permeable Wall Assembly: Impact Of A Vented Wall Cavity, Diane Bastien, Martin Winther-Gaasvig
International Building Physics Conference 2018
Building envelopes that are hygroscopic and permeable to water vapour can contribute to improve the Indoor Environmental Quality (IEQ) in buildings by reducing indoor humidity fluctuations and the concentration of some contaminants like CO2. However, risks of interstitial condensation and mold growth need to be assessed to ensure the durability of such building envelopes. The objective of this paper is to perform hygrothermal simulations of a case study house designed with a Hygroscopic and Permeable Building Envelope (HPBE) and to assess the impact of having a vented cavity compared to a face-sealed wall. This contribution presents hygrothermal simulations of a …
Sorption Hysteresis In Wood And Its Coupling To Swelling: A New Modelling Approach, Jan Carmeliet, Mingyang Chen, Dominique Derome
Sorption Hysteresis In Wood And Its Coupling To Swelling: A New Modelling Approach, Jan Carmeliet, Mingyang Chen, Dominique Derome
International Building Physics Conference 2018
Sorption hysteresis of amorphous cellulose is studied. Cellulose, as a renewable organic biopolymer, is an essential component of various natural composites such as wood. A coupling process between sorption and deformation leads to the hysteresis as observed in sorption and swelling, both experimental and simulated for cellulose and wood in general.
The Effects Of Production Technologies On The Air Permeability Properties Of Cross Laminated Timber, Villu Kukk, Targo Kalamees, Jaan Kers
The Effects Of Production Technologies On The Air Permeability Properties Of Cross Laminated Timber, Villu Kukk, Targo Kalamees, Jaan Kers
International Building Physics Conference 2018
In building envelope, the cross laminated timber (CLT) is often used as air barrier layer. The objective of this study was to evaluate the impact of production technologies such as edge bonding, different initial moisture content (MC) of lamination, and number of lamination layers (3 and 5) on the air-permeability properties of cross laminated timber. Air leakage and crack growth in CLT panels were measured after the panels were conditioned in environments with different relative humidity (RH) in progressive steps from humid to dry environments (RH 70%→ RH 50%→ RH 30%→ RH 10%). The test results showed that the most …
Understanding Swelling Of Wood Through Multiscale Modeling, Dominique Derome, Chi Zhang, Mingyang Chen, Jan Carmeliet
Understanding Swelling Of Wood Through Multiscale Modeling, Dominique Derome, Chi Zhang, Mingyang Chen, Jan Carmeliet
International Building Physics Conference 2018
Wood is a well-used building material where the capacity of wood to absorb water leads to swelling and reduced mechanical properties, and also to questions of durability. The origin of the hygroscopic behavior of wood lies at the nanoscale material that composes its cell walls. Using atomistic modeling, we study the hygromechanical behavior of the different polymeric components of wood, separately and in aggregate configurations. We report the coupled effects of water sorption on the hygric and mechanical properties of the S2 cell wall layer and we upscale the findings using a poromechanical framework.
Analysis Of Dynamic Variation Characteristics And Influential Factors Of Pm2.5 On Subway Platforms Under Air-Conditioning Condition And Ventilation Condition, Lihui Wang, Jihua Zhang, Tianwei Hu, Meng Kong, Jensen Zhang, Jie Song, Yi Zheng
Analysis Of Dynamic Variation Characteristics And Influential Factors Of Pm2.5 On Subway Platforms Under Air-Conditioning Condition And Ventilation Condition, Lihui Wang, Jihua Zhang, Tianwei Hu, Meng Kong, Jensen Zhang, Jie Song, Yi Zheng
International Building Physics Conference 2018
The purpose of this study is to investigate the main influential factors of the subway Particulate Matter (PM) pollutants under the air-conditioning condition and ventilation condition, by an on-site field measurement in a subway station in Shanghai. It is found that the dust accumulation at fresh air shaft was the secondary dusting action under the influence of fresh air flow, leading to a higher concentration of the PM in the subway station than in the outdoor air even when the outdoor air quality was good. In addition, in the morning rush hour the PM 2.5 value near the platform screen …
Fate Of Particles Released By A Puff–Dispersion With Different Air Distributions, Shichao Liu, Atila Novoselac
Fate Of Particles Released By A Puff–Dispersion With Different Air Distributions, Shichao Liu, Atila Novoselac
International Building Physics Conference 2018
Well-mixed assumption normally has flaws in the space with continuous-releasing particle sources. For transient point or puff sources, however, particle concentration might vary differently among locations during emission periods and afterwards. This study measures whether and how rapidly ventilation systems can distribute particles emitted from puff-like sources in an indoor space. The impact of ventilation pattern (over-head mixing ventilation and displacement ventilation), particle size (0.77, 2.5 and 7 μm) and source location are also examined. The results show that particles with sizes of 0.77 μm and 2.5 μm can be distributed uniformly by both mixing ventilation and displace ventilation shortly …
Assessing The Performance Of Photocatalytic Oxidation Of Volatile Organic Compounds In Three Different Scaled Set-Ups, Zahra Shayegan, Chang-Seo Lee, Ali Bahloul, Fariborz Haghighat
Assessing The Performance Of Photocatalytic Oxidation Of Volatile Organic Compounds In Three Different Scaled Set-Ups, Zahra Shayegan, Chang-Seo Lee, Ali Bahloul, Fariborz Haghighat
International Building Physics Conference 2018
Volatile organic compounds (VOCs) are considered a major group of indoor air contaminants with several proven adverse health effects. Ultraviolet photocatalytic oxidation process (UVPCO) is a promising technology for the removal of VOC contaminants in indoor air environments. In addition, adequate efficiency of PCO has been proven in laboratory conditions. However, when PCO is scaled up and applied in real conditions, there are some limitations that need to be addressed. Several factors are involved in the efficiency of the PCO process such as humidity, flow rate (residence time), inlet of contaminant concentration, light source, etc. To the best of our …
Radon Levels In Rented Accommodation, Torben Valdbjørn Rasmussen
Radon Levels In Rented Accommodation, Torben Valdbjørn Rasmussen
International Building Physics Conference 2018
Indoor radon levels were measured in 221 homes located in 53 buildings, including 28 multioccupant houses and 25 single-family terraced houses. The homes consisted of rented accommodation located in buildings recorded as being constructed before 2010 and after the year 1850. In addition, the radon level was measured in the basement in 9 of the buildings. The mean year value of the indoor radon level was 30.7 (1–250) Bq/m3. The indoor radon level exceeded 100 Bq/m3 in 5.9% of the homes, all located in single-family terraced houses. The variable single-family terraced houses explained 5.9% of the variation in indoor radon …
An Investigation On The Quantitative Correlation Between Urban Morphology Parameters And Outdoor Ventilation Efficiency Indices, Wowo Ding, Yunlong Peng, Zhi Gao
An Investigation On The Quantitative Correlation Between Urban Morphology Parameters And Outdoor Ventilation Efficiency Indices, Wowo Ding, Yunlong Peng, Zhi Gao
International Building Physics Conference 2018
Urban outdoor ventilation and pollutant dispersion have important implications for the urban planning and design of urban morphology. In this paper, two urban morphology parameters including Floor area ratio (FAR) and Building site coverage (BSC) are attempted to investigate the quantitative correlation with urban ventilation indices. Firstly, we present an idealized model including nine basic units. The FAR of model is constant 5.0, and the BSC increases from 11% to 77%, which in consequence generates 101 non-repetitive asymmetric forms. Next, the Computational Fluid Dynamics (CFD) is employed to evaluate the ventilation efficiency of pedestrian level within each model’s central area. …
Effect Of Urban Texture On Building Energy Performance, Suzi Dilara Mangan, Irem Sozen, Gul Koclar Oral, Idil Erdemir Kocagil
Effect Of Urban Texture On Building Energy Performance, Suzi Dilara Mangan, Irem Sozen, Gul Koclar Oral, Idil Erdemir Kocagil
International Building Physics Conference 2018
Today, ongoing discussions on climate change, depletion of fossil fuels and energy efficiency emphasize the need for a more sustainable built environment and thus the need to reduce energy consumption in buildings and urban textures and reduce greenhouse gas emissions. Therefore the evaluation of building energy performance with a holistic approach, taking the effect of urban textures and microclimates into consideration has become very significant in the recent years. Urban texture is a commonly accepted expression including the form and height of buildings, the width of streets, their orientation, spatial configuration and arrangement in space intersection, vegetation and so on. …
Rapid Cooling Of Urban Surfaces During Rainfall: Physical Basis, Dominant Energy Fluxes, And Sensitivity To Pavement And Rainfall Properties, Hamidreza Omidvar, Elie Bou-Zeid
Rapid Cooling Of Urban Surfaces During Rainfall: Physical Basis, Dominant Energy Fluxes, And Sensitivity To Pavement And Rainfall Properties, Hamidreza Omidvar, Elie Bou-Zeid
International Building Physics Conference 2018
Using model for the heat transfer between pavements and runoff during rainfall, we investigate the importance of different pavement and rainfall properties, as well as crucial energy budget terms that drive the cooling processes. The results indicate that the pavement and runoff temperature and energy fluxes are very sensitive to the rain temperature. In addition, pavement albedo has a significant effect on the simulated temperature since it modifies the initial pavement temperature before the rain starts. The results also indicated that among the different energy budget terms, evaporation and long wave radiation are the main cooling terms, while the shortwave …
New Microclimate Monitoring Method And Data Process For Investigating Environmental Conditions In Complex Urban Contexts, Ilaria Pigliautile, Veronica Lucia Castaldo, Anna Laura Pisello
New Microclimate Monitoring Method And Data Process For Investigating Environmental Conditions In Complex Urban Contexts, Ilaria Pigliautile, Veronica Lucia Castaldo, Anna Laura Pisello
International Building Physics Conference 2018
The rapid urbanization of the last century coupled with local climate change imputable to anthropogenic actions triggered a huge research effort aimed at investigating urban microclimate. Typically, cities present a variety of microclimates due to the internal variation of their landscapes in terms of morphology, surfaces properties, presence of greenery, etc. Location-specific microclimate conditions affect both (i) building energy needs and (ii) citizens’ quality of life. For these reasons, a small-scale analysis from the citizen perspective with high-time-resolution environmental data is required. Recent studies tried to reach that level of precision by using remote sensing, movable observational transects or dense …
Using Advanced Urban Canopy Models To Investigate The Potential Of Thermochromic Materials As Urban Heat Island Mitigation Strategies, Claudia Fabiani, Anna Laura Pisello, Elie Bou-Zeid, Jiachuan Yang
Using Advanced Urban Canopy Models To Investigate The Potential Of Thermochromic Materials As Urban Heat Island Mitigation Strategies, Claudia Fabiani, Anna Laura Pisello, Elie Bou-Zeid, Jiachuan Yang
International Building Physics Conference 2018
Recent trends in urbanization processes are causing serious threats at both local and global environmental scale. Greenhouse gas emissions, heat waves, and the heat island effect are constantly growing in intensity and produce increasing discomfort and health impacts in urban populations. In this context, the building sector is currently developing advanced and adaptive materials for building envelope and paving surface applications characterized by high energy performance and low embodied energy. Most of these innovative materials are firstly analysed at the component scale by means of laboratory investigations, while their effect on the built environment is generally assessed at a later …
Analytical And Numerical Investigation On Depth And Pipe Configuration For Coaxial Borehole Heat Exchanger, A Preliminary Study, Hongshan Guo, Forrest Meggers
Analytical And Numerical Investigation On Depth And Pipe Configuration For Coaxial Borehole Heat Exchanger, A Preliminary Study, Hongshan Guo, Forrest Meggers
International Building Physics Conference 2018
Existing research on the performance of shallow geothermal systems are prone to investigate the ground as a large thermal mass at a constant temperature despite possible temperature increase at depths - otherwise commonly known as the geothermal gradient. Most of the existing analytical models that predict the heat exchange between a borehole heat exchanger with the soil does not allow for the geothermal gradients to be accounted for. The few models that actually does account for the geothermal gradients, on the other hand, does so by enforcing a pre-existing temperature gradient only. We are presenting a bottom up approach in …
Comparison Of Lattice Boltzmann Method And Finite Volume Method With Large Eddy Simulation In Isothermal Room Flow, Mengtao Han, Ryozo Ooka, Hideki Kikumoto
Comparison Of Lattice Boltzmann Method And Finite Volume Method With Large Eddy Simulation In Isothermal Room Flow, Mengtao Han, Ryozo Ooka, Hideki Kikumoto
International Building Physics Conference 2018
Lattice Boltzmann method (LBM), as a new computational fluid simulation method, has aroused widespread attention in recent decades within engineering practice. LBM with large eddy simulation (LBM-LES) model is commonly used in predicting high Reynolds flow, and is considered to have a prediction accuracy similar to traditional finite volume method (FVMLES). Nonetheless, a systematic discussion on the accuracy of LBM-LES, and its consistency with FVM-LES, in indoor turbulent flow situations, is still insufficient. In this study, simulations of an indoor isothermal forced convection benchmark case (from IEA Annex 20) are implemented by using both LBM-LES and FVM-LES, with the aim …