Browsing by Author "Gadala, Mohamed"
Now showing items 1-10 of 10
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Aeroacoustic Simulation for NASA CC3 Centrifugal Compressor Operating at off Design Condition
(2016 , Conference)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 ... -
Centrifugal Compressor Spiral Dry Gas Seal Simulation Working at Reverse Rotation
( Elsevier Ltd , 2013 , Conference)Unidirectional dry gas seal may experiences reverse rotation when equipped in a centrifugal compressor. This paper describes how the reverse rotation effects on the spiral unidirectional dry gas seal performance and pressure ... -
Dry gas seal simulation with different spiral tapered grooves
( 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 ... -
Effect of blade tip geometry on centrifugal compressor performance and stability
( Medwell Journals , 2016 , Article)The reliability operation for small fuel cells and hybrid fuel cell with gas turbine requires centrifugal compressor surge prevention. This study concerns a high speed centrifugal compressor stage with different blade tip ... -
Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned diffuser
( 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 ... -
Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned diffuser
( Elsevier , 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 ... -
On the aero acoustic and internal flows structure in a centrifugal compressor with hub side cavity operating at off design condition
( Elsevier , 2016 , Article)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 ... -
Optimized statistical parameters of acoustic emission signals for monitoring of rolling element bearings
( SAGE Publications Ltd , 2016 , Article)Acoustic emission (AE) signal generated from artificial defects in rolling element bearings are investigated using experimental measurements in this paper. Rolling element bearings are crucial parts of many machines and ... -
Three Dimensional Computational Study for Spiral Dry Gas Seal with Constant Groove Depth and Different Tapered Grooves
( Elsevier Ltd , 2013 , Conference)The three dimensional simulation for dry gas seal with constant depth spiral grooves and with different taper grooves is done using ANSYS FLUENT CFD code. Grid independence study and code validation are done with experimental ... -
Unsteady CFD simulation for high speed centrifugal compressor operating near surge
( American Society of Mechanical Engineers (ASME) , 2014 , Conference)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. ...
