Three-dimensional experimental investigation of a low speed axial flow compressor stage

Özveren, Vahit


Three-dimensional non-isothermal model development of high temperature PEM Fuel Cells
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A three-dimensional non-isothermal mathematical model is developed in a triple mixed serpentine flow multichannel domain for a high temperature PEM Fuel Cell having a phosphoric acid doped PBI membrane as electrolyte and an active area of 25 cm(2) within Comsol Multiphysics. The inlet temperatures of cathode and anode reactants are taken as 438 K. Model predicts pressure, and temperature distribution along the channels and membrane current density distribution over the membrane electrodes. The model results...
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Three-dimensional modeling of intersonic shear-crack growth in asymmetrically loaded unidirectional composite plates
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An anisotropic cohesive model of fracture is applied to the numerical simulation of Coker and Rosakis experiments (2001). In these experiments, a unidirectional graphite-epoxy composites plate was impacted with a projectile, resulting in an intersonic shear-dominated crack growth. The simulations account for explicit crack nucleation-through a self-adaptive remeshing procedure-crack closure and frictional sliding. The parameters used in the cohesive model are obtained from quasi-static fracture experiments,...
Three-dimensional modelling of stratified coastal waters
Balas, L; Ozhan, E (2002-01-01)
An implicit baroclinic 3-D model developed to simulate the circulation in coastal waters, is presented. The model has hydrodynamic, transport and turbulence model components. It is a composite finite difference-finite element model. In the horizontal plane, second order central finite differences on a staggered scheme and in the vertical Galerkin method with linear shape functions are used. Implicit equations are solved by Crank Nicholson method which has second order accuracy in time also. Developed model ...
Three-dimensional CFD analysis of liquid slug acceleration and impact in a voided pipeline with end orifice
He, Junling; Hou, Qingzhi; Lian, Jijian; Tijsseling, Arris S.; Bozkuş, Zafer; Laanearu, Janek; Lin, Lei (2022-01-01)
© 2022 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.This research describes the dynamic behavior of an isolated slug driven by pressurized air in a voided line with an end orifice. A three-dimensional (3D) computational-fluid-dynamics (CFD) model is used to simulate the rapid propulsion and impact at the orifice for given slug length and driving air pressure, and is validated against experimental data. New mechanisms are observed: (i) the driving air pressure at the slug...
Citation Formats
V. Özveren, “Three-dimensional experimental investigation of a low speed axial flow compressor stage,” Middle East Technical University, 2000.