The experiments of aerodynamic aeroacoustic performance of axial fans in non self stimulated domain are carried out.
本文对非自模化区域内小型风机的气动声学性能进行了实验研究，详细讨论了在非自模化区域内动叶叶尖间隙对气动声学性能的影响，并与自模化区域内的影响作了对比分析。
Based on the characteristic of the self-simulation of the vertical temperature profile and the property that the integral of similarity function is equal to constant at each layer, the sea was divided into 4 layers.
文中,以水温垂直剖面的自模性将其由T-Z分布变为θ-η剖面为基础,在考虑海面加热,忽略热平流效应和来自海底的热通量情况下,将海洋分为4层,并在各层内利用其自模函数的积分趋于常量的特性,对引入自模函数的热传导方程进行推导运算,导出描述含中层冷水垂直热结构7个特征量的闭合方程组。
In this paper, two expressions of non dimensional temperature and depth are proposed for the positive and negative temperature gradient layers of intermediate cold water, based on the experience in studying vertical ocean thermal structure using non dimensional self simulation function of vertical temperature profile.
1 5℃ ,证明了含中层冷水的垂直热结构亦存在自模性 ,所提出的无因次经验表达式具有可靠性 ,纠正了认为自模函数的建立仅适用于单跃层结构的观点 ,并为进一步建立黄海中层冷水垂直热结构数值预报模式奠定了实验基