| 张腾，李井华，颜应文.不同进口条件对OGV/ 前置扩压器流场大涡
模拟结果的影响[J].航空发动机,2018,44(6): |
| 不同进口条件对OGV/ 前置扩压器流场大涡
模拟结果的影响 |
| Effect of Different Inlet Conditions on Large Eddy Simulation Results of OGV/ Pre-Diffuser Flow Field |
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| DOI： |
| 中文关键词: 出口导向叶片 前置扩压器 大涡模拟 合成涡方法 进口条件 航空发动机 |
| 英文关键词:outlet guide vanes(OGV) pre-diffuser large eddy simulation(LES) synthetic eddy method (SEM) inlet conditions aeroengine |
| 基金项目:中央高校基本科研业务费专项资金、青年科技创新基金（NS2015029）资助 |
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| 中文摘要: |
| 为了研究不同进口条件对压气机出口导向叶片（Outlet Guide Vane，OGV）/ 前置扩压器流场性能的影响，分别采用合成
涡方法与白噪声方法生成进口条件，研究不同进口条件对流场数值模拟结果的影响，并与文献给出的试验结果进行对比。结果表
明：采用合成涡方法生成的进口速度场满足试验测得的时均速度分布与脉动均方根分布，且其生成的进口湍流结构可传播到下游
较远处；合成涡方法能够较好地预测OGV 内的流场，与白噪声方法相比，所预测的OGV 吸力面分离区较小；在OGV 出口截面、扩压器
内和扩压器出口截面，采用2 种方法得到的速度分布相差不大，与试验相比分布趋势相同 |
| 英文摘要: |
| In order to research the effect of different inlet conditions on the flow field performance of compressor outlet guide vane
(OGV)/ pre-diffuser,the inlet conditions were generated by the method of synthetic eddy and white noise,respectively. The effect of
different inlet conditions on the numerical simulation results of the flow field were researched and compared with the test results given in the
literatures. The results show that the inlet velocity field generated by the synthetic eddy method satisfies the time-averaged velocity
distribution and the pulsating mean square root distribution measured by the test,and the inlet turbulent structure generated by it can
propagate to far downstream. The synthetic eddy method can better predict the flow field in OGV,and the predicted suction surface
separation area of OGV is smaller than that of the white noise method. The velocity distribution obtained by the two methods is similar in the
exit cross section of OGV and the exit cross section of diffuser and inside the diffuser,and the distribution trend is the same as the test. |
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