Small Grants for Exploratory Research: Optimum Design of Turbulent Flow Diffusers

在小额探索性研究拨款的资助下，将进行数值计算，以测试快速有效地获得最佳流量的方案的有效性。测试用例将是二维扩散器中的湍流。优化是在给定的进口条件和扩散器长度下获得最大的压力上升。一个传统的工程湍流模型将被纳入计算。随着优化方案的进行，优化后的配置将使用相同的模型进行连续验证。快速优化方法，以最大化或最小化某些性能参数（压力，阻力），而不依赖于耗时的试验和错误，将在各种工程流程系统的巨大效用。

Funded by a Small Grant for Exploratory Research, a numerical calculation will be carried out to test the validity of a scheme for rapidly and efficiently obtaining optimized flows. The test case will be turbulent flow in a two-dimensional diffuser. The optimization is to attain the maximum pressure rise for given inlet conditions and diffuser length. A conventional engineering turbulence model will be incorporated into the calculation. The optimized configuration will be tested with the same model in a continuous validation as the optimization scheme proceeds. Fast optimization methods to maximize or minimize some performance parameter (pressure, drag), without recourse to time consuming trial and error, would be of great utility in a variety of engineering flow systems.