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Sensitivity analysis of control parameters in particle swarm optimization
(Elsevier, 2020-02)
Particle Swarm Optimization (PSO) is a powerful nature-inspired metaheuristic optimization method that may determine optimal solutions of engineering problems in fewer evaluations compared to other optimization methods. ...
Large eddy simulation for a deep surge cycle in a high-speed centrifugal compressor with vaned diffuser
(The American Society of Mechanical Engineers - ASME, 2015-06)
This paper presents a computational study for a high-speed centrifugal compressor stage with a design pressure ratio equal to 4, the stage consisting of a splittered unshrouded impeller and a wedged vaned diffuser. The aim ...
Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned
(Shahin, I., Alqaradawi, M., Gadala, M., & Badr, O. (2016). Large eddy simulation of surge inception and active surge control in a high speed centrifugal compressor with a vaned diffuser. Applied Mathematical Modelling, 40(23-24), 10404-10418., 2016)
In this study, we present a numerical investigation of active surge control and perfor- mance improvement for an aero engine centrifugal compressor (NASA CC3) using self- recirculating bleed slots with different bleeding ...
Experimental study of interaction of twin liquid jets on stationary and moving surfaces
(ASME, 2014)
The interaction between twin liquid jets impacts the heat transfer at interaction region. In this paper, the interaction of twin circular free surface long water jets with typical industrial parameters impinging on stationary ...
Hydrodynamics of Twin Water Jets Impingement on a Flat Horizontal Moving Surface
(Ninth International Conference on Computational Fluid Dynamics (ICCFD9), Istanbul, Turkey, July 11-15, 2016, 2016)
The interaction of twin round free-surface water jets impinging vertically on a horizontal moving surface is numerically studied. Jets flow rate (15, 22, 30 L/min) and substrate velocity (0.6, 1.0, 1.5 m/s) were systematically ...
Suitability of Project-Based Learning (PBL) in Mechanical Design Education
(In Proceeding of the WSEAS International Conference, 2005)
This paper discusses the suitability of Project-Based learning (PBL) in mechanical design education. We first introduce project-based learning and highlight its main differences with problem-based learning. We discuss the ...
Stability analysis of fluid film bearings under laminar and turbulent regimes
(IOP Publishing, 2018)
Stability of short journal bearings is investigated in bith the linear and nonlinear regimes under laminar and turbulent operating conditions with consideration of drag force effects. Exerted forces on fluid film bearings ...
A Robust Modification to the Universal Cavitation Algorithm in Journal Bearings
(ASME, 2017)
In the current study, a modified fast converging, mass-conserving, and robust algorithm is proposed for calculation of the pressure distribution of a cavitated axially grooved journal bearing based on the finite volume ...
Study of the deformation of compressor blades during rotating stall
(12th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, 2016-07)
This paper introduces aerodynamic simulations and structural analysis of a high speed centrifugal compressor at the stall condition. Simulations were performed for the compressor when the air injection control is applied ...
Thermo-electro-mechanical Performance of Piezoelectric Stack Actuators for Fuel Injector Applications
(Sage, 2009-03)
Piezoelectric actuators are increasingly used in fuel injectors due to their quick response, high efficiency, accuracy, and excellent repeatability. Current understanding of their thermo-electro-mechanical performance under ...