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Computational fluid dynamics (CFD) technique is employed to study the performance of ejector in the fuel delivery line of polymer electrolyte membrane (PEM) fuel cell system. Four different ejector geometries are established and tested under 34 different working conditions. It is found that the humidity at the ejector exit increases with the pressure ratio alphaP at first then decreases with it. The...
Radiative Discrete Ordinate (DO) model and gas conduction model are firstly applied to simulate the coupled heat transfer with radiation and conduction in a cold box of Cold Neutron Source (CNS) device. An experiment rig is conducted under the similar conditions to validate the simulation models. Results indicate that the total cold loss from the coupled heat transfer can be decreased effectively...
A numerical investigation is performed on the physical field of rocket tank with natural circulation precooling loop based on computational fluid dynamics (CFD) technique. The results show that convection heat transfer is dominant in the bulk above the return inlet position and the heat conduction takes place chiefly below the position. The axial thermal stratification is produced in the main region...
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