二维扩压器壁面最优速度分布的动态规划法研究  

THEORETICAL ANALYSIS OF THF OPTIMAL VELOCITY DISTRIBUTION FOR A TWO DIMENSIONAL DIFFUSER WITH PRINCIPLES OF DYNAMIC PROGRAMING

作　　者：谷传纲[1] 张谋进[1] 陈西 

机构地区：[1]西安交通大学动力机械工程系

出　　处：《西安交通大学学报》1991年第5期75-82,共8页Journal of Xi'an Jiaotong University

基　　金：国家自然科学基金

摘　　要：本文运用动态规划法原理和能预测湍流边界层分离的经验公式,建立了二维、对称扩压器优化命题的物理模型和适宜于动态规划法求解的数学模型,并得到满足约束的壁面最优速度分布。该计算结果与实验结果及用Pontryagin极大值原理的计算结果均甚为吻合,该方法可以推广至不对称扩压器的优化命题中。An optimal velocity distribution on the wall of a two-dimensional symmetric diffuser has been obtained by dynamic programing method and the experimental formula which can be used for predicting the separation of turbulent boundary layer. The comparison between the calculated results and the experimental data is fairly satisfactory. The method proposed in this paper can also be used for the optimal design of a non-symmetric diffuser.

关 键 词：湍流边界层 扩压器 动态规划 

分 类 号：O357.52[理学—流体力学]