高超声速气动力试验模拟参数选取准则
收稿日期: 2014-04-10
修回日期: 2014-08-14
网络出版日期: 2015-03-31
Criterion of selective simulation parameters for hypersonic aerodynamic test
Received date: 2014-04-10
Revised date: 2014-08-14
Online published: 2015-03-31
高超声速气动力试验模拟准则的有效性问题阻碍了飞行器气动性能预测能力的发展。鉴于此,将尺度化方法应用于实验空气动力学领域,基于连续流域高超声速流动的双尺度特点,对各参数选取适当的尺度将流动控制方程尺度化。针对典型飞行状态,通过计算尺度化方程中各系数的量级,获取高超声速气动力试验模拟参数的选择准则。研究表明:建立的模拟参数选取方法为现有的高超声速气动力试验模拟准则提供了理论支持,模拟参数的选取准则随飞行条件发生显著改变。应用理论分析方法验证了黏性干扰参数是高马赫数高超声速气动力试验中的重要模拟参数,并与国外关于黏性干扰效应关联区域的结论进行了相互验证。
王刚 , 杨彦广 , 唐志共 . 高超声速气动力试验模拟参数选取准则[J]. 航空学报, 2015 , 36(3) : 789 -796 . DOI: 10.7527/S1000-6893.2014.0186
Validity issue on simulation criterion for hypersonic aerodynamic test has hindered the development of ability on aerodynamic performance prediction for hypersonic aircraft. Scaling method is applied in the field of experimental aerodynamics within continuous flow regime. Various parametric scales are selected due to dual scale of flow characteristics and different parameters are applied to scaling the equation. Based on the assessment of the order of magnitude for each parameter, the simulation parameter and its weight are obtained for typical flight conditions. Results indicate that the analytical method supports the existing criterion of selective simulation parameters and provides suggestions to improve the simulation criterion. What is more, this paper illustrates that selective simulation parameters vary significantly as flight environment changes, and the ranking of simulation parameters is given by various flight conditions. By applying theoretical method, it is verified that viscous interaction parameter is one of the most significant simulation factors for hypersonic aerodynamic test, which coincides with conclusions of scholars abroad.
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