%0 Journal Article %T 质子交换膜燃料电池系统引射器的数值分析<br>Numerical Analysis of Ejector Used in a PEMFC System %A 尹 %A 燕 %A 范明哲 %A 焦 %A 魁 %A 杜 %A 青 %J 天津大学学报(自然科学与工程技术版) %D 2016 %R 10.11784/tdxbz201506093 %X 基于CFD 方法建立了应用于质子交换膜燃料电池(PEMFC)阳极氢气循环系统引射器的三维数值模型,研 究了其结构参数,如混合管直径、等压混合管收敛角、等容混合管长度、扩散管长度和角度对引射器回流比的影 响.结果表明:回流比主要受二次回流管与吸入腔之间的压差和混合管进口面积影响;存在最佳的等压混合管收敛 角、等容混合管长度和扩散管角度;扩散管长度和混合管直径越大,回流效率越高.<br>In this study,a 3D numerical model of an ejector for the anode hydrogen recirculation in a proton exchange membrane fuel cell(PEMFC)system was established based on the CFD procedures.The ejector performance represented by the recirculation ratio was simulated under multiple ejector geometric parameters,such as the diameter of mixing tube,convergence angle of constant-pressure mixing tube,length of constant-area mixing tube and diffuser length and angle.The results indicate that the ejector recirculation ratio is mainly affected by the pressure difference between the secondary flow tube and the suction chamber and the mixing tube inlet area.Optimal convergence angle of constant-pressure mixing tube,length of constant-area mixing tube and diffuser angle exist.The greater the diffuser length and the diameter of mixing tube,the higher the recirculation ratio %K 质子交换膜燃料电池 %K 引射器 %K 结构参数 %K 回流比< %K br> %K proton exchange membrane fuel cell %K ejector %K geometric parameter %K recirculation ratio %U http://journals.tju.edu.cn/zrb/oa/darticle.aspx?type=view&id=201607015