200km/h电力机车气动性能风洞试验与数值模拟

Wind Tunnel Experiment and Numerical Simulation of Aerodynamic Characteristics for 200km/h Electric Locomotive

采用模型风洞试验和数值计算方法研究了200 km/h机车外形的气动性能.试验风洞为FD-09单回流低速风洞,模型缩尺比为1∶8.873.数值计算采用流体动力学软件FLUENT,数学模型为三维粘性不可压缩流体雷诺时均方程和κ-ε双方程湍流模型.数值模拟结果与模型风洞试验结果基本吻合.在此基础上对多个外形的设计参数进行了优化,并对优化后的模型流场作了数值计算,得出了一些有益的结论.

The model wind tunnel experiment and numerical simulation method were employed to study the aerodynamic characteristics of 200km/h electric locomotive. The wind tunnel used in the experiment was a FD-09 type of low speed wind tunnel with single direction recycle flow. The ratio of reducing scale of the locomotive model was 1 ： 8. 873. Numerical simulation was performed by using Software FLUENT. The 3D viscose uncompressible Reynolds equation and κ-ε double equations turbulence model were used in numerical analyses. The results of simulation were compared with those of the experiment, and both were generally consistent with each other. According to these results, several design parameters of the locomotive outline were optimized, and the newly optimized models were analyzed by numerical simulation method. Finally, some helpful conclusions were obtained.