Architectural Engineering Commons^™

Impact Of Modified Inlets On Residence Times In Baffled Tanks, Jeremy S. Carlston, Subhas Karan Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Sharp inlets, although prevalent, tend to reduce mixing efficiency in hydraulic contact tanks by affecting fluid and scalar transport throughout the entire system. Superior inlets are often not an option because of the prohibitive cost of upgrading preexisting tanks. To remedy this, seven inexpensive yet easily implemented attachments to a sharp inlet were tested on a full-scale, baffled, prototypical contact tank. Cumulative residence time distributions of a conservative, passive scalar were obtained for each attachment to assess their performance. A study using computational fluid dynamics of the same tank with the various attachments was then performed to strengthen the empirical …

A Framework For Guiding The Briefing Process In Public-Private Partnerships In The Uae Construction Industry, Rauda Saeed Ali Saif Al-Saadi

Dissertations

Public-Private Partnership (PPP) is a procurement method that employs a long-term contractual arrangement between public and private sectors with the intention of developing a public facility. A PPP brief must supply information that not only particularizes the project requirements but also specifies its program, risk management, expected performance output and payment mechanism. Many challenges currently face the briefing process of PPP projects in the UAE. A uniform briefing process has not been agreed, because there is no unified tender law or PPP procurement process in the country. The main aim of this research is to develop a framework for guiding …

Recent Advances In Indoor Chemistry, Glenn Morrison

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Just as the chemistry creates urban smog and aerosols that influence climate change, chemistry in building air can alter the indoor environment for better or worse. This review focuses on chemical pathways initiated by oxidants that infiltrate from outdoor air and other indoor-sourced reactants and surfaces that make these environments unique chemical reactors. Ozone reacts with fragrance molecules, tobacco smoke residues, and even human skin oils to generate a host of oxidized organic compounds, secondary organic aerosols, and irritants. Nitrous acid is formed on indoor surfaces and is subsequently cleaved by even the relatively dim light indoor. This raises the …

Planning And Design For Hurricane Protection With Sea Level Rise, Bob Ivarson

May 22, 2015: Megaproject Protective Structures for Hampton Roads

No abstract provided.

The Role Of Healing Gardens, Kalina K. Vander Poel

Student Research Symposium

The objective of this research is to observe the use patterns of a healing garden located on the oncology floor of a pediatric hospital. Use patterns recorded through behavior mapping and tracking focus on collecting data related to the type of user, length of stay, and activity. Three user groups (patient, provider, and visitor) stay an average of eight (8) minutes at Randall Children’s Hospital ranging in activity from sit and relax to actively play. Some findings are concurrent with past research while other findings are not. This research serves as an initial set of data to inform the production …

Portland State University School Of Business Administration (Sba) Renovation + Personal Comfort Investigation, Abolfazl Mekanik, Corey Griffin, Louise Foster

Student Research Symposium

This poster discusses the results of a field study about indoor thermal comfort, based on investigations in Portland State University`s School of Business (SBA) classrooms. The field study was conducted by physical parameter monitoring and questionnaires. Both field monitoring and occupant surveys were performed at the same time during the regular class period.The measurement campaign consisted of measuring the environmental parameters such as temperature (Ta), relative humidity (RH), CO₂, and sound levels. The outdoor air temperature, humidity, and sound were registered every 2 hour period during class time. The intention for this project is to investigate thermal comfort …

Ua66 Ogden College Of Science & Engineering Newsletter, Cheryl Stevens, Dean

Ogden College of Science & Engineering Publications

No abstract provided.

Food For Function Pt. 4, Ryan Desilva

Architecture Senior Theses

This thesis proposes to develop and apply sustainable energy strategies driven by the needs of yet commercial kitchens within the context of adaptive re-use of buildings. Spatializing systems within the framework of building envelopes will minimize energy usage, promote smarter holistic building design; but most importantly, teach culinary students sustainable strategies related to the growth, use and reuse of food as it pertains to the consumption and production of energy.

Food For Function, Ryan Desilva

Architecture Senior Theses

This thesis proposes to develop and apply sustainable energy strategies driven by the needs of yet commercial kitchens within the context of adaptive re-use of buildings. Spatializing systems within the framework of building envelopes will minimize energy usage, promote smarter holistic building design; but most importantly, teach culinary students sustainable strategies related to the growth, use and reuse of food as it pertains to the consumption and production of energy.

Food For Function Pt. 2, Ryan Desilva

Architecture Senior Theses

This thesis proposes to develop and apply sustainable energy strategies driven by the needs of yet commercial kitchens within the context of adaptive re-use of buildings. Spatializing systems within the framework of building envelopes will minimize energy usage, promote smarter holistic building design; but most importantly, teach culinary students sustainable strategies related to the growth, use and reuse of food as it pertains to the consumption and production of energy.

Food For Function Pt. 3, Ryan Desilva

Architecture Senior Theses

This thesis proposes to develop and apply sustainable energy strategies driven by the needs of yet commercial kitchens within the context of adaptive re-use of buildings. Spatializing systems within the framework of building envelopes will minimize energy usage, promote smarter holistic building design; but most importantly, teach culinary students sustainable strategies related to the growth, use and reuse of food as it pertains to the consumption and production of energy.

Effect Of The Physical Environment On Teacher Satisfaction With Indoor Environmental Quality In Early Learning Schools, Stuart Shell

Durham School of Architectural Engineering and Construction: Dissertations, Theses, and Student Research

While the quantity and quality of teacher-child interactions plays a key role in emotional and cognitive development for children, there is scant evidence regarding the contribution of physical environment to child outcomes. This study seeks to understand better the relative importance of variables within the physical environment for occupants. The research design targets teachers’ satisfaction with the physical environment as the outcome variable, based on the assumption that teachers who are more satisfied with their classroom provide higher-quality interactions with children. Teachers from two early learning schools with a total of 31 classrooms completed a written survey that asked about …

On Turbulent Mixing In Stably Stratified Wall-Bounded Flows, Farid Karimpour, Subhas Karan Venayagamoorthy

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

In this paper, we provide an analysis of turbulent mixing in stably stratified wall-bounded flows to highlight a number of important issues such as prediction of the turbulent viscosity, the turbulent diffusivity, and the irreversible flux Richardson number. By invoking the equilibrium assumption between the production rate of the turbulent kinetic energy (P), the dissipation rate of the turbulent kinetic energy (P), and the turbulent potential energy dissipation rate (εPE) as P ≈ ε + εPE and also assuming equilibrium between the buoyancy flux (B) and εPE as -B ≈ εPE, we first propose that the irreversible flux Richardson number …

Development Of Simulation Modules For Liquid Desiccant Systems In Sorpsim, Zhiyao Yang

Open Access Theses

Liquid Desiccant Systems (LDS) have been an attractive alternative to the conventional vapor-compression air conditioning technology in HVAC applications for their thermally-driven nature and the expertise in dealing with large latent load in a more energy-efficient way. Much effort has been made during the past decades to study the performance of LDS and their components both experimentally and through modelling approach. However, predicting the performance of LDS is still a skill-demanding task because it involves model implementation, retrieval of fluid properties, solving procedure setup, and preparation of a good set of initial guess value to model just one component. It …

Modeling Person-To-Person Contaminant Transport In Enclosed Environments, Chun Chen

Open Access Dissertations

It is essential to predict person-to-person contaminant transport in enclosed environments to improve air distribution design and reduce the infection risk from airborne infectious diseases. This study aims to improve and accelerate the simulation of person-to-person contaminant transport in enclosed environments. ^ This investigation first conducted experimental measurements of person-to-person contaminant transport in an office mockup and the first-class cabin of a functional MD-82 aircraft. The experimental data of steady-state airflow, temperature, and gas contaminant concentration fields obtained in the office were used to validate the steady-state computational fluid dynamics (CFD) models. In the aircraft cabin, the transient particle concentrations …

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Consolidation-Induced Solute Transport For Constant Rate Of Strain. Ii: Comparison With Incremental Loading, Patrick J. Fox, Hefu Pu

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

This paper presents a numerical investigation of one-dimensional large strain consolidation-induced solute transport for incremental loading (IL) and constant rate of strain (CRS) conditions. Solute transport accounts for advection, diffusion, dispersion, linear and nonlinear sorption, and equilibrium and nonequilibrium sorption, and is consistent with temporal and spatial variations of porosity and seepage velocity in the consolidating soil. Simulations were conducted using material properties for kaolinite clay and indicate that IL and CRS conditions produce significantly different responses during the course of consolidation, including applied stress, rate of settlement, excess pore pressure, and local strain. However, for a given set of …

Influence Of Portland Cement And Ground-Granulated Blast-Furnace Slag On Bleeding Of Fresh Mix, Hong Jae Yim, Jae Hong Kim, Seong Ho Han, Hyo Gyoung Kwak

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Bleeding occurs when freshly mixed cement-based materials settle in a form, and this phenomenon influences the quality of the fresh state as well as the hardened state. This paper attempts to measure the bleeding of Portland cement and ground granulated blast furnace slag (GGBFS) paste mixtures. To investigate the influence of water-to-powder ratio and the used powders under high pressure on bleeding, a pressure vessel and various types of freshly mixed paste were prepared. The packing density and permeability were measured and discussed to understand material effects on the bleeding phenomenon.

Consolidation-Induced Solute Transport For Constant Rate Of Strain. I: Model Development And Simulation Results, Hefu Pu, Patrick J. Fox

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

A numerical model, called CSTCRS1, is presented for coupled one-dimensional consolidation and solute transport under constant rate of strain (CRS) loading conditions. The consolidation algorithm accounts for vertical strain, general constitutive relationships, relative fluid velocity, changing compressibility and hydraulic conductivity during consolidation, and an external hydraulic gradient. The solute transport algorithm accounts for advection, dispersion, linear and nonlinear sorption, and equilibrium and nonequilibrium sorption. Soil compressibility is rate-independent and as such CSTCRS1 is more appropriate for less-structured soils. The model is based on a dual-Lagrangian framework that separately tracks the motions of sold and fluid phases. The development of CSTCRS1 …

Indygo Downtown Transit Center - Transforming Indianapolis, Ben Smith, Steve Robinson, Joe Fischer

Purdue Road School

The new IndyGo Downtown Transit Center will transform transit in downtown Indianapolis and offers lessons in transit planning, traffic planning, intermodal connectivity, public engagement, and pedestrian access. This presentation will give an overview of the facility and then focus on attributes of the facility and of the design process that might offer useful lessons to other transit projects, including those of a smaller scale