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This paper studies the effect of constant magnetic field on solidification of a conductive liquid that filled a vertical three-dimensional annulus-shaped crucible. The computational domain of the proposed geometry is a vertical annulus cavity; the inner and outer sides of the mentioned cavity have constant temperature, but top and bottom sides have been thermally insulated. The governing equations...
In present paper it is tried to concentrate to the configurations of gas channels and gas diffusion layers influences on the performance of polymer electrolyte membrane fuel cell. At first, increasing the number of channels is considered and observed such that the best results are gained with the case of three channels. Afterward, effect of prominent GDLs is studied. The prominences size is one of...
In this paper, a proton-exchange membrane fuel cell is numerically and experimentally studied. In this work, the effect of increasing both the cathode and anode side operating pressure on cell performance is numerically predicted and verified by empirical test. Both results indicate that the proficiency of cell enhances by increasing the operating pressure. Additionally, in the following we investigated...
A three-dimensional, single-phase model of a proton exchange membrane fuel cell with both the gas distribution flow channels and the membrane–electrode assembly has been developed. A single set of conservation equations which are valid for the flow channels, gas-diffusion electrodes, catalyst layers, and the membrane region is developed and numerically solved using a finite volume-based computational...
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