摘要
针对气动热力学边界条件不确定性的数值模拟方法,进行了考虑来流边界条件不确定性对流体流动影响研究。算例中提取来流边界条件为设计变量,采用拉丁超立方抽样方法对设计变量进行采样,运用CFD软件对所有样本进行数值模拟计算后得到响应变量,最后分析得到来流边界条件对流体的影响规律。结果表明:来流边界条件中湍流度的不确定性对压力系数的影响大于来流速度的不确定性对压力系数的影响。
Aiming at the numerical simulation method of uncertainty for the dynamic thermodynamics boundary conditions, the eiiect of the uncertainty for the inflow boundary conditions on the fluid flow was studied. Taking the inflow boundary condition as design variable, these samplings were obtained by Latin Hypercube Sampling （LHS） method. The response variables were obtained by numerically simulating the samples using the CFD software. Then the effect of the inflow boundary conditions on the flow was analyzed. The results show that the uncertainty of turbulent intensity for inflow boundary conditions has more influences on pressure coegicient than that of the uncertainty of the inflow speed.
出处
《航空发动机》
2015年第2期35-39,共5页
Aeroengine
关键词
边界条件
不确定性
拉丁超立方抽样
数值模拟
气动热力学
湍流度
压力系数
boundary condition
uncertainty
Latin Hypereube Sampling
numerical simulation
dynamic thermodynamics
turbulent intensity
pressure coefficient
作者简介
吴逸飞（1980），女，硕士，研究方向为叶轮机气动热力学；E-mall：wuyifei．jx@163．com。
