科创中国

A comparison between two kinds of three-dimensional computation with a two-phase and nonisothermal model

• 摘要：

  Three-dimensional numerical simulations of a typical unit (TU) of Polymer Electrolyte Membrane Fuel Cell (PEMFC) and a 27-channel entire-cell (EC) were respectively conducted with a steady and nonisothermal and two-phase model. Results comparisons were conducted focusing on the distribution of the liquid water saturation, phase-change source terms and temperature in TU and EC. It is found that, there exist significant differences between the numerical predictions either in variation trend or in parameter range of TU and EC. For example the water saturation in TU is far less than that in EC under the same operational and computational conditions. This might be mainly resulted from the set up of boundary conditions in the computational domains. Thus the computational results by the methods of TU (which is widely adopted in present literatures) and EC represent different processes even under the same computational conditions.

• 作者：

  Hong Lin;Xing Wei;春华 闵;增耀 李;雅玲 何;文铨 陶

• 刊名：

  Kung Cheng Je Wu Li Hsueh Pao/Journal of Engineering Thermophysics

• 在线出版时间：

  2008-10