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为改善超声速风洞的启动特性,研究了风洞下游形状对风洞起动特性的影响。以1 m×1 m超声速风洞为例,利用数值计算和试验进行了探讨,提出并验证了满足性能要求的高效风洞扩散段设计方案。介绍了风洞结构、数值分析与试验方法及其结果等。
In order to improve the start-up characteristics of supersonic wind tunnel, the influence of downstream shape of wind tunnel on the starting characteristics of wind tunnel was studied. Taking a 1 m × 1 m supersonic wind tunnel as an example, the numerical calculation and experiment are discussed, and the design scheme of high efficiency wind tunnel diffusion section which meets the performance requirements is proposed and verified. Introduced the wind tunnel structure, numerical analysis and test methods and their results.