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السجلات المعروضة 21 -- 36 من 36
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Measurements of laminar flame speeds of alternative gaseous fuel mixtures
( American Society of Mechanical Engineers (ASME) , 2015 , Article)Global warming and the ever increasing emission levels of combustion engines have forced the engine manufacturers to look for alternative fuels for high engine performance and low emissions. Gaseous fuel mixtures such as ... -
Measurements of Laminar Flame Speeds of Gas-to-Liquid-Diesel Fuel Blends
( American Society of Mechanical Engineers (ASME) , 2016 , Article)This work investigates the laminar flame speed, SN, of gas-to-liquid (GTL) fuel and its 50-50% by volume blends with conventional diesel, in a cylindrical bomb capable of measuring SN at different initial temperatures and ... -
Numerical investigation of rotating stall characteristics and active stall control in centrifugal compressors
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)This paper focuses on providing better view for the understanding of rotating stall phenomenon in centrifugal compressors by using numerical simulations and presents a study of the role of air injection method in delaying ... -
Numerical simulation of stall development into surge and stall control using air injection in centrifugal compressors
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)This study presents a numerical simulation of the formation of rotating stall and the initiation of surge in order to study the connection between stall and surge in centrifugal compressors. Also, the current paper introduces ... -
Numerical simulation of using combined active and passive stall control techniques in centrifugal compressors
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)This study presents a numerical simulation of stall control by using the casing treatment method which represents the passive control technique and also by using the air injection method which represents the active control ... -
Optimal Determination of Respiratory Airflow Patterns for a General Multicompartment Lung Mechanics System with Nonlinear Resistance and Compliance Parameters
( American Society of Mechanical Engineers (ASME) , 2015 , Article)In this paper, we develop a framework for determining optimal respiratory airflow patterns for a multicompartment lung mechanics system with nonlinear resistance and compliance parameters. First, a nonlinear multicompartment ... -
Optimized intake manifold designs and their effects on the operation and emissions of a gas-to-liquid diesel engine
( American Society of Mechanical Engineers (ASME) , 2020 , Conference Paper)Two simultaneous strategies have been used in this work to reduce the diesel engine emissions. First, using novel manifold designs to generate strong turbulence and improve the fuel-air mixing inside the cylinder. The ... -
Performance Comparison Between Fast Fourier Transform-Based Segmentation, Feature Selection, and Fault Identification Algorithm and Neural Network for the Condition Monitoring of Centrifugal Equipment
( American Society of Mechanical Engineers (ASME) , 2017 , Article)This paper compares and evaluates the performance of two major feature selection and fault identification methods utilized for the condition monitoring (CM) of centrifugal equipment, namely fast Fourier transform (FFT)-based ... -
Sagittal plane waves in infinitely periodic multilayered composites composed of alternating viscoelastic and elastic solids
( American Society of Mechanical Engineers (ASME) , 2018 , Article)In order to design phononic crystals whose band-gaps are located in low-frequency ranges, researchers commonly adopt low stiffness polymeric materials as key constituents and exploit the high impedance mismatch between ... -
Some observations on soil-pipe interface shear strength in direct shear under low effective normal stresses and large displacements
( American Society of Mechanical Engineers (ASME) , 2016 , Conference Paper)Experimental work is undertaken at the University of British Columbia (UBC) to study the soil-pipe interface shear strength at levels of shear displacements and effective normal stresses typically encountered in offshore ... -
Spreading of SARS-CoV-2 via heating, ventilation, and air conditioning systems-an overview of energy perspective and potential solutions
( American Society of Mechanical Engineers (ASME) , 2021 , Article)The role of heating, ventilation, and air conditioning systems (HVAC) in spreading SARSCoV-2 is a complex topic and has not been studied thoroughly. There are some existing strategies and technologies for health and high ... -
Sustainable Poultry house ventilation using Dew point indirect evaporative cooler aided with radiative cooling
( American Society of Mechanical Engineers (ASME) , 2021 , Conference Paper)Maintaining good production quality in layer poultry houses is directly correlated to the thermal environment of the laying hens as well as their breathable air quality. This work compares the performance of two passive ... -
Transient gas turbine performance diagnostics through nonlinear adaptation of compressor and turbine maps
( American Society of Mechanical Engineers (ASME) , 2015 , Article)Gas turbines are faced with new challenges of increasing flexibility in their operation while reducing their life cycle costs, leading to new research priorities and challenges. One of these challenges involves the ... -
Turbulence modeling using Z-F, RSM, LES and WMLES for flow analysis in Z-Shape ducts
( American Society of Mechanical Engineers (ASME) , 2020 , Conference Paper)Turbulent flow in Z-shape duct configuration is investigated and analyzed using Reynolds Stress Model (RSM), Large Eddy Simulation (LES), ζ-f Model, and Wall-Modeled Large Eddy Simulation (WMLES). The results are validated ... -
Turbulent Flames in Enclosed Combustion Chambers: Characteristics and Visualization - A Review
( American Society of Mechanical Engineers (ASME) , 2020 , Article)Remarkable progress has been achieved in measuring the flame propagation rate accurately under laminar conditions, which can be used to predict turbulent flame propagation rates using some correlations fitted to experimental ... -
Unsteady CFD simulation for high speed centrifugal compressor operating near surge
( American Society of Mechanical Engineers (ASME) , 2014 , Conference Paper)Centrifugal compressor surge and stall are an instabilities flow and system phenomenon, which can lead to a loss of engine power, large pressure transients and, in some cases, failure of the compressor and bearing system. ...