Browsing by Author "Ahmed, S. F."
Now showing items 1-7 of 7
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Combustion and emissions of a diesel engine utilizing novel intake manifold designs and running on alternative fuels
Sadeq A.M.; Bassiony M.A.; Elbashir A.M.; Ahmed S.F.; Khraisheh M. ( Elsevier Ltd , 2019 , Article)This work presents a number of integrated strategies aimed at enhancing the performance of the diesel engine and the subsequent reduction of its associated emissions. Three novel spiral-helical shaped intake manifolds with ... -
Effects of Turbulence Intensity and Biogas Composition on the Localized Forced Ignition of Turbulent Mixing Layers
d’Auzay, C. Turquand; Papapostolou, V.; Ahmed, S.F.; Chakraborty, N. ( Taylor and Francis Inc. , 2019 , Article)Three-dimensional compressible Direct Numerical Simulations (DNS) have been used to investigate the localized forced ignition of statistically planar mixing layers of biogas/air mixtures for different levels of turbulence ... -
Investigating the effect of utilizing new induction manifold designs on the combustion characteristics and emissions of a direct injection diesel engine
BassionyM.A.; SadiqA.M.; GergawyM.T.; AhmedS.F.; GhaniS.A. ( American Society of Mechanical Engineers (ASME) , 2018 , Article)New induction manifold designs have been developed in this work to enhance the turbulence intensity and improve the mixing quality inside diesel engine cylinders. These new designs employ a spiral-helical shape with three ... -
Modeling the SARS-CoV-2 parallel transmission dynamics: Asymptomatic and symptomatic pathways
Chowdhury, S. M. E. K.; Forkan, M.; Ahmed, S. F.; Agarwal, P.; Shawkat Ali, A. B. M.; Muyeen, S. M.... more authors ... less authors ( Elsevier Ltd , 2022 , Article)Asymptomatic transmission of the coronavirus disease and the infected individual prediction has become very important in the COVID-19 outbreak study. The asymptomatic and symptomatic transmission studies are still ongoing ... -
On the minimum ignition energy and its transition in the localised forced ignition of turbulent homogeneous mixtures
Turquand d'Auzay C.; Papapostolou V.; Ahmed S.F.; Chakraborty N. ( Elsevier Inc. , 2019 , Article)The minimum energy requirements for ensuring (i) just successful ignition and (ii) successful self-sustained flame propagation without the assistance of an external energy source following a successful ignition event have ... -
The probabilistic nature of ignition of turbulent highly-strained lean premixed methane-air flames for low-emission engines
Ahmed, S.F. ( Elsevier Ltd , 2014 , Article)The probabilistic nature of ignition of turbulent highly-strained lean premixed flames has been investigated. Two flow configurations have been considered in this study; counter-flow and bluff-body flames. Different ... -
Unanswered issues on decarbonizing the aviation industry through the development of sustainable aviation fuel from microalgae
Rony, Zahidul Islam; Mofijur, M.; Hasan, M.M.; Ahmed, S.F.; Almomani, Fares; Rasul, M.G.; Jahirul, M.I.; Loke Show, Pau; Kalam, M.A.; Mahlia, T.M.I.... more authors ... less authors ( Elsevier , 2023 , Article)Concerns have been raised about the effects of fossil fuel combustion on global warming and climate change. Fuel consumer behavior is also heavily influenced by factors such as fluctuating fuel prices and the need for a ...