低速风洞设计中的导流片损失问题

Research on energy loss of guide vane in lowspeed wind tunnel

摘要: 低速回流式风洞中拐角部位的流动损失占总损失的比重很大，该位置导流片绕流的流动状况对于流动损失有明显的影响。与常规的工程估算方法不同，风洞实验与数值计算相结合，并通过正交优化能够对不同工作条件下导流片流动及其性能指标的变化规律进行研究，对特定的导流片找到了最佳的工作条件。

Abstract: Research is conducted on the energy loss of flow around a cascadeof guide vanes in a lowspeed wind tunnel nume rically and experimentally. With finite differential method and multigrid techno logy, the flow field around a cascade of biarc vanes and SA070