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Wing design for supersonic transports using integral equation method

机译:用积分方程法设计超音速运输机的机翼

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The applicability of an inverse problem solver systemized with other computational tools was demonstrated. The demonstrations have been conducted on the aerodynamic design of wings for two Japanese scaled experimental Supersonic Transport (SST) models. The first model is of a clean configuration which has no propulsion system while the second one has two big engines. The design has been primarily performed by the system of Computational Fluid Dynamics (CFD) tools, which are a Navier-Stokes equation solver, geometry defining software, an inverse problem solver and interface programs between each solver and another. Because of the challenging concept of the wing design for the SSTs, such as a Natural Laminar Flow wing, a new design method was needed. Then, an integrated CFD design system of residual-correction loop was developed utilizing the existing inverse problem solver which solved integral equations. Though the inverse problem solver was based on low order approximation of flow equations, the design system worked successfully for the first model in Navier-Stokes flows. As for the second one that was a fairly complicated design problem affected by a big propulsion system, the preliminary stage of the wing design finished. Through both results, it was shown that we attained synergy effect of each CFD tool by systemizing and the design system using the simple inverse problem was promising for complex three-dimensional design.
机译:演示了使用其他计算工具系统化的逆问题解决程序的适用性。演示是针对两个日本规模的实验性超音速运输(SST)模型的机翼的空气动力学设计进行的。第一个模型是干净的配置,没有推进系统,而第二个模型有两个大型发动机。该设计主要由计算流体动力学(CFD)工具系统执行,该系统是Navier-Stokes方程求解器,几何定义软件,逆问题求解器以及每个求解器与另一个求解器之间的接口程序。由于SST机翼设计的挑战性概念,例如自然层流机翼,因此需要一种新的设计方法。然后,利用现有的求解积分方程的逆问题求解器,开发了残差校正回路的集成CFD设计系统。尽管逆问题求解器基于流动方程的低阶近似,但该设计系统已成功用于Navier-Stokes流动中的第一个模型。至于第二个是受大型推进系统影响的相当复杂的设计问题,机翼设计的初步阶段已经完成。通过这两个结果表明,通过系统化我们获得了每种CFD工具的协同效应,使用简单逆问题的设计系统有望用于复杂的三维设计。

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