تصفح Mechanical & Industrial Engineering حسب المؤلف "Shahin, Ibrahim"
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Aeroacoustic Simulation for NASA CC3 Centrifugal Compressor Operating at off Design Condition
Alqaradawi, Mohamed; Shahin, Ibrahim; Gadala, Mohamed; Badr, Osama (2016 , Conference Paper)This paper covers the characterization of the acoustic noise and the unsteady flow field of a high speed centrifugal compressor NASA CC3. In order to accurately predict the noise, all analyses are carried out through the ... -
Dry gas seal simulation with different spiral tapered grooves
Shahin, Ibrahim; Gadala, Mohamed; Alqaradawi, Mohamed; Badr, Osama ( UiTM Press , 2014 , Article)The flow and performance analysis for a dry gas seal (DGS) with a standard and tapered spiral grooves is developed using a verified FLUENT CFD model. A comprehensive analysis is proposed to resolve the effect of modifying ... -
Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned diffuser
Shahin, Ibrahim; Alqaradawi, Mohamed; Gadala, Mohamed; Badr, Osama ( Elsevier Inc. , 2016 , Article)In this study, we present a numerical investigation of active surge control and performance improvement for an aero engine centrifugal compressor (NASA CC3) using self-recirculating bleed slots with different bleeding ... -
Numerical investigation of rotating stall in centrifugal compressor with vaned and vaneless diffuser
Halawa, Taher; Alqaradawi, Mohamed; Gadala, Mohamed S.; Shahin, Ibrahim; Badr, Osama ( Science Press , 2015 , Article)This study presents a numerical simulation of the stall and surge in a centrifugal compressor and presents a descriptionof the stall development in two different cases. The first case is for a compressor with vaneless ... -
Unsteady CFD simulation for high speed centrifugal compressor operating near surge
Shahin, Ibrahim; Gadala, Mohamed; Alqaradawi, Mohamed; Badr, Osama ( 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. ...