College of Engineering: المرسلات الحديثة
السجلات المعروضة 941 -- 960 من 8344
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Autoignition of n-heptane in a turbulent co-flowing jet
( Elsevier , 2015 , Article)N-heptane autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. The simulations are designed to investigate the effects of molecular and turbulent transports ... -
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 ... -
Turbulence effects on the autoignition of DME in a turbulent co-flowing jet
( Elsevier , 2017 , Article)Dimethyl ether (DME) autoignition in turbulent co-flowing jets with preheated air is studied using the one-dimensional turbulence (ODT) model. We investigate the effects of molecular and turbulent transport on the autoignition ... -
Investigating the effect of the air inlet temperature on the combustion characteristics of a spark ignition engine fueled by biogas
( Wiley-Blackwell , 2020 , Article)This work has conducted a numerical study using AVL-Boost engine simulation utilizing biogas (CH4 and CO2)–air mixtures in a SI engine model. The effect of varying the air manifold temperature from 25 to 50°C on the ... -
Evaluation and calibration of dynamic modulus prediction models of asphalt mixtures for hot climates: Qatar as a case study
( Elsevier , 2022 , Article)The dynamic modulus (|E*|) of asphalt mixtures is one of the most important inputs in Mechanistic-Empirical (ME) pavement analysis and design. Several models have been developed to predict the dynamic modulus based on ... -
Impact of Aging on the Microstructure of Asphalt Binder Modified with Antioxidant Additives and Copolymers
( Chinese Society of Pavement Engineering , 2023 , Article)The effect of long-term aging on asphalt binders mixed with antioxidant additives and copolymers demonstrated potential for retarding oxidative aging at the nanoscale based on atomic force microscopy (AFM) characterization. ... -
An Approach for Adjusting the Laboratory-Determined Dynamic Modulus Master Curve of Asphalt Layers Based on Falling Weight Deflectometer Measurements
( Hindawi , 2023 , Article)Structural assessment is critical for designing asphalt pavement overlays, estimating the remaining life of pavements, and selecting an appropriate rehabilitation strategy for existing pavements. The falling weight ... -
Assessment of Critical Project Success Factors for Management of Pavement Construction Using the Delphi Approach
( American Society of Civil Engineers (ASCE) , 2024 , Article)Construction project management is typically adopted in modern civil landscapes. Owing to the significant global increase in infrastructure investments, it is crucial to analyze the success and timely completion of such ... -
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 ... -
Transient 3D simulations of turbulent premixed flames of gas-to-liquid (GTL) fuel in a fan-stirred combustion vessel
( Elsevier , 2021 , Article)This work aims to conduct turbulent flame studies of GTL fuel and 50/50 diesel-GTLblend and compare them to diesel under a wide range of equivalence ratio (0.7 < Ф < 1.3) and turbulence intensities (0.5 m/s < u′ < 3.0 m/s). ... -
Dataset for transient 3D simulations of turbulent premixed flames of Gas-to-Liquid (GTL) fuel
( Elsevier , 2021 , Other)A fan-stirred combustion vessel is used to study the premixed turbulent combustion of diesel, Gas to Liquids (GTL) and 50/50 diesel-GTL and to generate these datasets. A numerical simulation approach is implemented for ... -
Combustion and emissions of a gas-to-liquid diesel engine utilizing optimized spiral-helical intake manifold designs
( American Society of Mechanical Engineers (ASME) , 2021 , Article)Two simultaneous strategies were used to reduce diesel engine emissions. Optimized manifold designs were used with gas-to-liquid (GTL) fuel and its blend with diesel fuel. Six new spiral-helical manifolds were tested, which ... -
Effect of Utilizing a Novel Intake Manifold Design on Smoke Emissions and Particulate Size Distributions of a Gas-to-Liquid Diesel Engine
( American Society of Mechanical Engineers (ASME) , 2021 , Article)Smoke emissions and particulate matter (PM) size distributions were investigated on a direct-injection (DI) single-cylinder diesel engine running on both gas-to-liquid (GTL) and diesel fuels utilizing a novel spiral-helical ... -
Investigating the Potential of Recycling Flare-Source Hydrocarbon Gases in an Industrial Burner
( American Society of Mechanical Engineers (ASME) , 2021 , Article)Flare gas is considered a global environmental concern. Flaring contributes to wasting limited material and energy resources, economic loss, and greenhouse gas emissions. Utilizing flared gas as a fuel feed to industrial ... -
Development of an Air-Cooled Induction Manifold for Diesel Engines in Hot and Humid Climate
( American Society of Mechanical Engineers (ASME) , 2022 , Article)Extreme weather conditions in the Gulf, Qatar, have been taken as an example in this study, tend to be hot and humid mostly throughout the year, especially in the summer. Such weather negatively affects the performance and ... -
Modelling of multiple biodiesel-emitted nitrogen oxides using ANN approach
( Elsevier , 2023 , Article)This research paper focuses on modelling of nitrogen oxides emitted by diesel engine for multiple biodiesel blends. A lot of research work has observed that the properties of biodiesel blends affect the nitrogen oxide ... -
Development of Machine Learning Models for Studying the Premixed Turbulent Combustion of Gas-To-Liquids (GTL) Fuel Blends
( Springer Nature , 2024 , Article)Studying the spatial and temporal evolution in turbulent flames represents one of the most challenging problems in the combustion community. Based on previous 3D numerical analyses, this study aims to develop data-driven ... -
An experimental and numerical investigation of the effects of the diaphragm pressure ratio and its position on a heated shock tube performance
( Wiley-Blackwell , 2022 , Article)The main purpose of this work was to investigate the performance of heated shock tube (ST) with different pressure ratios and diaphragm positions numerically and experimentally. The numerical model was developed to simulate ... -
Efficient forward error correction for reliable transmission in packet networks
( dblp computer science bibliography , 2008 , Conference Paper)This paper proposes an approach that utilizes a new forward error correction mechanism for reconstructing lost or corrupted packets sent over a Network. Instead of retransmissions of lost or corrupted packets, the new ... -
Digital government service machine DGSM
( IEEE , 2008 , Conference Paper)The rapid improvement in latest technologies motivates individuals to progress in their societies. Fast and worthy can be significant titles for the demands of this modern life. And because of technology improvements, there ...