实验风洞数据与风洞尺寸关联的数值求解  

Numerical simulation of the experimental data associated with sizes of wind tunnel

作　　者：吴永诚[1] 苗峰[2] 闫幼锋[1] 黎义斌[3] 

机构地区：[1]兰州理工大学设计艺术学院,甘肃兰州730050 [2]兰州理工大学土木工程学院,甘肃兰州730050 [3]兰州理工大学能源与动力工程学院,甘肃兰州730050

出　　处：《兰州理工大学学报》2013年第6期60-64,共5页Journal of Lanzhou University of Technology

基　　金：国家自然科学基金(51166009)

摘　　要：为了提高风洞装置实验数据的准确度,进行实验风洞数据与风洞尺寸关联的数值求解.引入近自由边界风洞宽特征值和补偿的概念,将复杂风洞流场流动和风洞宽之间的关系,简化为一个一元方程表达式.该表达式在相互独立的实验风洞数据和数值风洞数据之间建立起联系,使小尺寸风洞装置中获得的实验数据,经数值模拟计算求得的补偿值,直接求解近自由边界风场的实验数据,将内流风场的实验结果拓展到近无限边界流场的实验结果,提高实验数据的准确度.通过一个常数,使表达式适应任意入口风速条件.以风洞中的竖板为研究对象,数值模拟近自由边界风洞宽特征值和补偿值.For improving the accuracy of experimental straight wind tunnel facilities,the numerical simulation for the relevance between experimental data and the sizes of the wind tunnel are made.The approximate-free-boundary eigenvalue of width of wind tunnel and the compensation was in traduced to the numerical simulation,the relationship between the complicated simulation for the flow and the sizes of the wind tunnel boundary will be simplified to a single-variable equation.The compensation of the wind tunnel can be numerical calculated with the relationship between experiments and simulations.Under the use of the compensation,the existing small size experimental facilities of the wind tunnel can achieve the satisfying results of the approximate-free-boundary wind tunnel.The equation can be used for any wind speeds of inlet by a constant.The numerical simulation for the model of a 2-D wind tunnel is made to calculate approximate-free-boundary eigenvalue of width of wind funnel and the relevant compensation.

关 键 词：实验风洞数据 准确度 近自由边界 风洞宽特征值 数值补偿 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]