边界层动量 meaning in English
momentum thickness of boundary layer
Examples
- Momentum integral equation of turbulent boundary layer on ogree section of spillway dam in considering the gravity and centrifugal force
考虑重力及离心力的溢流坝反弧段紊流边界层动量积分方程 - By the integral to boundary layer thickness and relative conditions , the momentum integral equation of boundary layer is obtained
通过对边界层厚度的积分并利用相关条件，得到了边界层动量积分方程。 - In the thesis the low drag - low noise optimization of the vehicle main form design is realized , main accomplishments are as follows . researched the knowledge of drag and flow noise , the parameters of the boundary layer are calculated by the hess - smith method and boundary layer momentum integral method . the calculation of the length of transition zone and change in boundary layer displacement thickness between laminar and turbulent states in the transition is improved , then the drag coefficient and self - noise from the transition zone are calculated as the objective functions of the optimization
主要研究内容和成果如下：对航行器绕流流场进行分析，深入研究了阻力和流噪声产生机理，建立了阻力系数和自噪声的评估数值计算模型；采用物面分布源汇法和边界层动量积分法对绕流流场的流体动力参数进行计算，改进了转捩区长度和边界层位移厚度的计算，应用于航行器头部驻点自噪声的计算；最后设计了阻力系数和自噪声数值计算程序模块。 - In chapter three , the momentum integral equations and their solutions of two - phase fluids in boundary layer are given and the no - disturbance solutions on the surface of vane are required . leading into the disturbance factor of no - dimension and thickness coefficient ks in boundary layer , the numerical method of finite approximation is used to calculate the boundary layer
第三章给出了固液两相流泵的边界层动量积分方程及其解的一般表达式，并得到叶片表面的无扰动解；引入了无量纲扰动因子及边界层厚度系数k _ ，给出了用于边界层计算的有限次逼近的计算方法。 - In chapter two , according to n - s equation , considering the couple between liquid and solid , the double - fluid model is used to respectively set up momentum equations of two - phase fluids in condition of basic hypothesis , which are general equations of two - phase fluids . simplifying the equations in boundary layer , the momentum differential equations are required and the boundary conditions are given . in the same time , the simplifying equations and their solutions , in which solid grain satisfies in boundary layer
第二章依据n - s方程，考虑到液、固之间的相间耦合，在基本假设条件下，采用双流体模型，分别建立液、固两相的动量方程，它是固液两相流体的一般方程式；对其在边界层流区内进行量级比较，得到边界层动量微分方程并给出其边界条件，同时也得到固体颗粒在边界层内所满足的简化方程及其解的表达式。