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Articles 1 - 18 of 18
Full-Text Articles in Engineering
Improving Tc Drill Bit's Efficiency And Resistance To Wear By Graphene Coating, Reza Taheri, Mohsen Jalali, Ahmed Al-Yaseri, George Yabesh
Improving Tc Drill Bit's Efficiency And Resistance To Wear By Graphene Coating, Reza Taheri, Mohsen Jalali, Ahmed Al-Yaseri, George Yabesh
Research outputs 2022 to 2026
Displaying a two-dimensional pure crystal carbon structure, Graphene is the strongest, yet thinnest substance discovered by scientists. Coating tungsten carbide (TC) drill bits with graphene to evaluate the effect of graphene on the wear, as well as the rate of penetration of the drilling bit was examined in this research. Two evaluation approaches were employed: one with employing ANSYS Software and the second by employing atomic pressure chemical vapor deposition (APCVD synthesis) in the laboratory to produce a monolayer graphene coating. The simultaneous software-based and lab-based testing were performed to increase the credibility of the results and minimize the potential …
Deicer Salt-Scaling Resistance Of Concrete Using Recycled Concrete Aggregates Pretreated By Silica Fume Slurry, Hossein Sasanipour, Farhad Aslani, Javad Taherinezhad
Deicer Salt-Scaling Resistance Of Concrete Using Recycled Concrete Aggregates Pretreated By Silica Fume Slurry, Hossein Sasanipour, Farhad Aslani, Javad Taherinezhad
Research outputs 2022 to 2026
Highlights: - Salt-scaling resistance in the presence of recycled concrete aggregates, - A strong bond between RCAs and new mortar was obtained after a freeze-thaw test, - Pulse velocity after exposure to freezing-thawing cycles negligibly decreased, - The scaling rate increased with the increase in the water–cement ratio, - The electrical resistivity of concrete after exposure to cycles has been investigated. Concrete wastes such as recycled concrete aggregates (RCA) make up a significant part of construction and demolition waste (C&DW) which can be used to minimize usage of natural aggregates and reduce carbon footprint. This paper studies the salt-scaling resistance …
Applications Of Technology And Innovation For A Sustainable Future, Veeriah Jegatheesan, Li Shu, Taku Fujiwara, Edita Baltrėnaitė-Gedienė
Applications Of Technology And Innovation For A Sustainable Future, Veeriah Jegatheesan, Li Shu, Taku Fujiwara, Edita Baltrėnaitė-Gedienė
Research outputs 2022 to 2026
Sustainable future depends on ways in which we keep upgrading our living style. The goals and targets set by Sustainable Development Goals will definitely help us to protect all types of ecosystems and their biodiversity. Still, much more complementary advances in technology and innovation and their applications are essential in realising realizing a sustainable future. The aims and scope of Environmental Technology & Innovation is well geared to contribute to such ambition. Thus, this virtual special issue (VSI) contains 23 articles from the presentations made at the international conference on the Challenges in Environmental Science and Engineering, CESE-2021. A brief …
Fluid–Rock Interactions And Its Implications On Eor: Critical Analysis, Experimental Techniques And Knowledge Gaps, Abubakar Isah, Muhammad Arif, Amjed Hassan, Mohamed Mahmoud, Stefan Iglauer
Fluid–Rock Interactions And Its Implications On Eor: Critical Analysis, Experimental Techniques And Knowledge Gaps, Abubakar Isah, Muhammad Arif, Amjed Hassan, Mohamed Mahmoud, Stefan Iglauer
Research outputs 2022 to 2026
Characterization of fluid–rock interactions is essential for a broad range of subsurface applications such as understanding fluid flow in porous medium and enhanced oil recovery predictions. Enhanced oil recovery (EOR) is crucial in oil and gas production operations, it entails injecting fluids into the reservoir to enhance productivity. When fluids are injected, interactions occur between the injected fluids and the reservoir rock/fluids; and the outcomes of fluid–rock interactions critically impact the fluid flow in porous medium and the associated oil recovery. Furthermore, the associated changes in reservoir properties (porosity, permeability etc.) and flow behavior (i.e. wettability alteration and relative permeability …
Application Of Underbalanced Tubing Conveyed Perforation In Horizontal Wells: A Case Study Of Perforation Optimization In A Giant Oil Field In Southwest Iran, Erfan Mohammadian, Milad Ebrahimi Dastgerdi, Abbas Khaksar Manshad, Amir H. Mohammadi, Bo Liu, Stefan Iglauer, Alireza Keshavarz
Application Of Underbalanced Tubing Conveyed Perforation In Horizontal Wells: A Case Study Of Perforation Optimization In A Giant Oil Field In Southwest Iran, Erfan Mohammadian, Milad Ebrahimi Dastgerdi, Abbas Khaksar Manshad, Amir H. Mohammadi, Bo Liu, Stefan Iglauer, Alireza Keshavarz
Research outputs 2022 to 2026
Underbalanced perforation can substantially reduce formation damage and improve the efficiency of production operation. The field in question is a giant oil field in Southwest Iran, with over 350,000 bbl/day production rates. Reservoir X is the main reservoir of the field and includes 139 horizontal wells out of the total of 185 production wells drilled in the field. Despite its technical difficulties, under-balance perforation has been proven to result in high productivity ratios and has been shown to reduce workover costs if appropriately conducted. Therefore, this study investigated a customized underbalanced tubing conveyed perforation to enhance oil production. First, post-drilling …
Effect Of Biochar On Desiccation Of Marine Soils Under Constant And Cyclic Temperatures, Thellen Kumar Puspanathan, Vihan Shenal Jayawardane, Suvash Chandra Paul, Kong Sih Ying, Sanjay Kumar Shukla, Vivi Anggraini
Effect Of Biochar On Desiccation Of Marine Soils Under Constant And Cyclic Temperatures, Thellen Kumar Puspanathan, Vihan Shenal Jayawardane, Suvash Chandra Paul, Kong Sih Ying, Sanjay Kumar Shukla, Vivi Anggraini
Research outputs 2022 to 2026
Biochar has recently been gaining increasing attention as a stable and sustainable soil amendment material. However, the effect of biochar amendment on the desiccation behaviour of coastal soils has not yet been examined. Consequently, the present study primarily investigated the effect of exposing biochar-amended marine soil (BAS) to constant and cyclic temperatures on its swell–shrink, evaporation and desiccation cracking characteristics. Biochar contents of 1%, 2%, 4% and particle size ranges of PS-1 (600 μm < D ≤ 2000 μm), PS-2 (300 μm < D ≤ 600 μm), PS-3 (D ≤ 75 μm) (D: biochar particle diameter) were employed. It was revealed that the absolute volumetric shrinkage of both unamended and biochar-amended specimens increased as the number of thermal cycles increased. Under continuous heat exposure, 4% (PS-3) BAS in compacted state achieved the maximum reduction in volumetric shrinkage which was 42%. Moreover, under continuous heat exposure, 2% (PS-1) BAS in slurry state achieved the highest reduction in desiccation cracking, which was 73%. The present study highlights the importance of identifying the most effective combination of biochar content and particle size required to achieve a desired outcome, in order to gain the maximum benefit of biochar as an amendment material at the lowest possible cost.
Monitoring Of Renewable Energy Systems By Iot-Aided Scada System, Ohirul Qays, Musse M. Ahmed, M. A. Parvez Mahmud, Ahmed Abu-Siada, S. M. Muyeen, Liton Hossain, Farhana Yasmin, Momtazur Rahman
Monitoring Of Renewable Energy Systems By Iot-Aided Scada System, Ohirul Qays, Musse M. Ahmed, M. A. Parvez Mahmud, Ahmed Abu-Siada, S. M. Muyeen, Liton Hossain, Farhana Yasmin, Momtazur Rahman
Research outputs 2022 to 2026
With the rapid increase of renewable energy generation worldwide, real-time information has become essential to manage such assets, especially for systems installed offshore and in remote areas. To date, there is no cost-effective condition monitoring technique that can assess the state of renewable energy sources in real-time and provide suitable asset management decisions to optimize the utilization of such valuable assets and avoid any full or partial blackout due to unexpected faults. Based on the Internet of Things scheme, this paper represents a new application for the Supervisory Control and Data Acquisition (SCADA) system to monitor a hybrid system comprising …
Design, Development, And Characterization Of Highly Efficient Colored Photovoltaic Module For Sustainable Buildings Applications, Mohammad Khairul Basher, Mohammad Nur-E-Alam, Momtazur Rahman, Steven Hinckley, Kamal Alameh
Design, Development, And Characterization Of Highly Efficient Colored Photovoltaic Module For Sustainable Buildings Applications, Mohammad Khairul Basher, Mohammad Nur-E-Alam, Momtazur Rahman, Steven Hinckley, Kamal Alameh
Research outputs 2022 to 2026
The building integrated photovoltaic (BIPV) system is one of the contributors which has enormous potential to reach the goal of net-zero energy buildings (NZEB) that significantly reduce the use of fossil fuels that contribute to global warming. However, the limitations of the visual and aesthetic appearance of current BIPV systems make this aspiration unlikely. This study investigates the limitations of the single-color-based PV modules that are dull in appearance and have low photo-conversion efficiency (PCE). In order to solve this issue, we designed, developed, and characterized micro-patterned-based multicolored photovoltaic (MPCPV) modules which are applicable to net-zero building and development. Our …
Uncertainties In The Projected Patterns Of Wave-Driven Longshore Sediment Transport Along A Non-Straight Coastline, Amin Reza Zarifsanayei, José A. A. Antolínez, Amir Etemad-Shahidi, Nick Cartwright, Darrell Strauss, Gil Lemos
Uncertainties In The Projected Patterns Of Wave-Driven Longshore Sediment Transport Along A Non-Straight Coastline, Amin Reza Zarifsanayei, José A. A. Antolínez, Amir Etemad-Shahidi, Nick Cartwright, Darrell Strauss, Gil Lemos
Research outputs 2022 to 2026
This study quantifies the uncertainties in the projected changes in potential longshore sediment transport (LST) rates along a non-straight coastline. Four main sources of uncertainty, including the choice of emission scenarios, Global Circulation Model-driven offshore wave datasets (GCM-Ws), LST models, and their non-linear interactions were addressed through two ensemble modelling frameworks. The first ensemble consisted of the offshore wave forcing conditions without any bias correction (i.e., wave parameters extracted from eight datasets of GCM-Ws for baseline period 1979–2005, and future period 2081–2100 under two emission scenarios), a hybrid wave transformation method, and eight LST models (i.e., four bulk formulae, four …
Recent Advances In Carbon Dioxide Geological Storage, Experimental Procedures, Influencing Parameters, And Future Outlook, Muhammad Ali, Nilesh Kumar Jha, Nilanjan Pal, Alireza Keshavarz, Hussein Hoteit, Mohammad Sarmadivaleh
Recent Advances In Carbon Dioxide Geological Storage, Experimental Procedures, Influencing Parameters, And Future Outlook, Muhammad Ali, Nilesh Kumar Jha, Nilanjan Pal, Alireza Keshavarz, Hussein Hoteit, Mohammad Sarmadivaleh
Research outputs 2022 to 2026
The oxidation of fossil fuels produces billions of tons of anthropogenic carbon dioxide (CO2) emissions from stationary and nonstationary sources per annum, contributing to global warming. The natural carbon cycle consumes a portion of CO2 emissions from the atmosphere. In contrast, substantial CO2 emissions accumulate, making it the largest contributor to greenhouse gas emissions and causing a rise in the planet's temperature. The Earth's temperature was estimated to be 1 °C higher in 2017 compared to the mid-twentieth century. A solution to this problem is CO2 storage in underground formations, abundant throughout the world. Millions …
An Intelligent Approach For Predicting The Strength Of Geosynthetic-Reinforced Subgrade Soil, Muhammad Nouman Amjad Raja, Sanjay K. Shukla, Muhammad Umer Arif Khan
An Intelligent Approach For Predicting The Strength Of Geosynthetic-Reinforced Subgrade Soil, Muhammad Nouman Amjad Raja, Sanjay K. Shukla, Muhammad Umer Arif Khan
Research outputs 2014 to 2021
In the recent times, the use of geosynthetic-reinforced soil (GRS) technology has become popular for constructing safe and sustainable pavement structures. The strength of the subgrade soil is routinely assessed in terms of its California bearing ratio (CBR). However, in the past, no effort was made to develop a method for evaluating the CBR of the reinforced subgrade soil. The main aim of this paper is to explore and appraise the competency of the several intelligent models such as artificial neural network (ANN), least median of squares regression, Gaussian processes regression, elastic net regularisation regression, lazy K-star, M-5 model …
Towards A Digital Twin For Characterising Natural Source Zone Depletion: A Feasibility Study Based On The Bemidji Site, Kaveh Sookhak Lari, Greg B. Davis, John L. Rayner
Towards A Digital Twin For Characterising Natural Source Zone Depletion: A Feasibility Study Based On The Bemidji Site, Kaveh Sookhak Lari, Greg B. Davis, John L. Rayner
Research outputs 2022 to 2026
Natural source zone depletion (NSZD) of light non-aqueous phase liquids (LNAPLs) may be a valid long-term management option at petroleum impacted sites. However, its future long-term reliability needs to be established. NSZD includes partitioning, biotic and abiotic degradation of LNAPL components plus multiphase fluid dynamics in the subsurface. Over time, LNAPL components are depleted and those partitioning to various phases change, as do those available for biodegradation. To accommodate these processes and predict trends and NSZD over decades to centuries, for the first time, we incorporated a multi-phase multi-component multi-microbe non-isothermal approach to representatively simulate NSZD at field scale. To …
Assessment Of Hole Quality, Thermal Analysis, And Chip Formation During Dry Drilling Process Of Gray Cast Iron Astm A48, Numan Habib, Aamer Sharif, Aqib Hussain, Muhammad Aamir, Khaled Giasin, Danil Yurievich Pimenov
Assessment Of Hole Quality, Thermal Analysis, And Chip Formation During Dry Drilling Process Of Gray Cast Iron Astm A48, Numan Habib, Aamer Sharif, Aqib Hussain, Muhammad Aamir, Khaled Giasin, Danil Yurievich Pimenov
Research outputs 2022 to 2026
The cutting parameters in drilling operations are important for high-quality holes and productivity improvement in any manufacturing industry. This study investigates the effects of spindle speed and feed rate on temperature, surface roughness, hole size, circularity, and chip formation during dry drilling of gray cast iron ASTM A48. The results showed that the temperature increased as spindle speed and feed rate increased. The surface roughness had an inverse relationship with the spindle speed and direct relation with the feed rate. Furthermore, hole size increased with increased spindle speed and decreased as the feed rate increased, while hole circularity decreased with …
Coupled Heat-Mass Transport Modelling Of Radionuclide Migration From A Nuclear Waste Disposal Borehole, Kaveh Sookhak Lari, Dirk Mallants
Coupled Heat-Mass Transport Modelling Of Radionuclide Migration From A Nuclear Waste Disposal Borehole, Kaveh Sookhak Lari, Dirk Mallants
Research outputs 2022 to 2026
Disposal of radioactive waste originating from reprocessing of spent research reactor fuel typically includes stainless steel canisters with waste immobilised in a glass matrix. In a deep borehole disposal concept, waste packages could be stacked in a disposal zone at a depth of one to potentially several kilometres. This waste will generate heat for several hundreds of years. The influence of combining a natural geothermal gradient with heat from decaying nuclear waste on radionuclide transport from deep disposal boreholes is studied by implementing a coupled heat-solute mass transport modelling framework, subjected to depth-dependent temperature, pressure, and viscosity profiles. Several scenarios …
Insights Into The Aerodynamic Versus Radiometric Surface Temperature Debate In Thermal-Based Evaporation Modeling, Kaniska Mallick, Dennis Baldocchi, Andrew Jarvis, Tian Hu, Ivonne Trebs, Mauro Sulis, Nishan Bhattarai, Christian Bossung, Yomna Eid, Jamie Cleverly, Jason Beringer, William Woodgate, Richard Silberstein, Nina Hinko-Najera, Wayne S. Meyer, Darren Ghent, Zoltan Szantoi, Gilles Boulet, William P. Kustas
Insights Into The Aerodynamic Versus Radiometric Surface Temperature Debate In Thermal-Based Evaporation Modeling, Kaniska Mallick, Dennis Baldocchi, Andrew Jarvis, Tian Hu, Ivonne Trebs, Mauro Sulis, Nishan Bhattarai, Christian Bossung, Yomna Eid, Jamie Cleverly, Jason Beringer, William Woodgate, Richard Silberstein, Nina Hinko-Najera, Wayne S. Meyer, Darren Ghent, Zoltan Szantoi, Gilles Boulet, William P. Kustas
Research outputs 2022 to 2026
Global evaporation monitoring from Earth observation thermal infrared satellite missions is historically challenged due to the unavailability of any direct measurements of aerodynamic temperature. State-of-the-art one-source evaporation models use remotely sensed radiometric surface temperature as a substitute for the aerodynamic temperature and apply empirical corrections to accommodate for their inequality. This introduces substantial uncertainty in operational drought mapping over complex landscapes. By employing a non-parametric model, we show that evaporation can be directly retrieved from thermal satellite data without the need of any empirical correction. Independent evaluation of evaporation in a broad spectrum of biome and aridity yielded statistically significant …
Optimum Geological Storage Depths For Structural H2 Geo-Storage, Stefan Iglauer
Optimum Geological Storage Depths For Structural H2 Geo-Storage, Stefan Iglauer
Research outputs 2022 to 2026
H2 geo-storage has been suggested as a key technology with which large quantities of H2 can be stored and withdrawn again rapidly. One option which is currently explored is H2 storage in sedimentary geologic formations which are geographically widespread and potentially provide large storage space. The mechanism which keeps the buoyant H2 in the subsurface is structural trapping where a caprock prevents the H2 from rising by capillary forces. It is therefore important to assess how much H2 can be stored via structural trapping under given geo-thermal conditions. This structural trapping capacity is thus …
Impacts Of Atmospheric Stilling And Climate Warming On Cyanobacterial Blooms: An Individual-Based Modelling Approach, Mohammad Hassan Ranjbar, David P. Hamilton, Amir Etemad-Shahidi, Fernanda Helfer
Impacts Of Atmospheric Stilling And Climate Warming On Cyanobacterial Blooms: An Individual-Based Modelling Approach, Mohammad Hassan Ranjbar, David P. Hamilton, Amir Etemad-Shahidi, Fernanda Helfer
Research outputs 2022 to 2026
Harmful algal blooms of the freshwater cyanobacteria genus Microcystis are a global problem and are expected to intensify with climate change. In studies of climate change impacts on Microcystis blooms, atmospheric stilling has not been considered. Stilling is expected to occur in some regions of the world with climate warming, and it will affect lake stratification regimes. We tested if stilling could affect water column Microcystis distributions using a novel individual-based model (IBM). Using the IBM coupled to a three-dimensional hydrodynamic model, we assessed responses of colonial Microcystis biomass to wind speed decrease and air temperature increase projected under a …
Responses Of Calcareous Sand Foundations To Variations Of Groundwater Table And Applied Loads, Dingfeng Cao, Sanjay Kumar Shukla, Linqing Yang, Chengchao Guo, Jinghong Wu, Fuming Wang
Responses Of Calcareous Sand Foundations To Variations Of Groundwater Table And Applied Loads, Dingfeng Cao, Sanjay Kumar Shukla, Linqing Yang, Chengchao Guo, Jinghong Wu, Fuming Wang
Research outputs 2022 to 2026
The long-term settlement of calcareous sand foundations caused by daily periodic fluctuations has become a significant geological hazard, but effective monitoring tools to capture the deformation profiles are still rarely reported. In this study, a laboratory model test and an in situ monitoring test were conducted. An optical frequency domain reflectometer (OFDR) with high spatial resolution (1 mm) and high accuracy (±10-6) was used to record the soil strain responses to groundwater table and varied loads. The results indicated that the fiber-optic measurements can accurately locate the swelling and compressive zones. During the loading process, the interlock between calcareous sand …