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绕流体型设计是流体工程设计的一个关键问题，是制约工程设计进程和影响工程性能的一个重要因素，发展绕流体型设计的数值方法具有理论上和经济上的重要意义、混合边界条件的绕流体型设计是其中的一个复杂难题，在对绕流体的局部修形和改进时，常常采用试凑法（ｃｕｔａｎｄｔｒｙ），因而发展有效的数值方法来完成这一要求是很必要的。本文采用有粘／无粘耦合理论计算绕流流场，结合数值优化方法进行混合边界条件的绕流体型设计方法研究，能设计出性能优良的绕流体型。本方法具有简捷、经济、实用而又可靠的特点，值得推荐。
Fluidic design is a key issue in fluid engineering design. It is an important factor that restricts engineering design process and affects engineering performance. It is theoretically and economically important to develop numerical methods around fluid type design. Fluid-based design is a complex problem. During the process of local modification and improvement of the fluid, it is common to use cutandtry. Therefore, it is necessary to develop effective numerical methods to fulfill this requirement. In this paper, the viscous / non-viscous coupling theory is used to calculate the flow field and the numerical simulation is used to study the design method of the flow around the mixed boundary conditions. The method is simple, economical, practical and reliable, it is recommended.