紊流发生器特性和流场的模拟调节

THE CHARACTERISTICS OF THE TURBULENCE GENERATOR AND THE SIMULATION OF THE FLOW REGULATION

关键词:  流场畸变  涡流发生器  性能分析  模拟试验  喷气发动机进气道

Key words:  Flow distortion  Vortex generator  Performance analysis  Simulation test  Jet engine inlet

摘要:

本文探讨了轴对称紊流发生器总压畸变流场的不稳定性,根据流场低压区的时钟位置和大小是否随时间而变化,可分为稳定型和非稳定型两种.对于稳定场,畸变指数测量的重复性较好,非稳定场则较差.文中还介绍了一种简单而有效的流场模拟调节方法.

Abstract:

The unsteadiness of Pilot pressure disfortion flow formed with axial-symmetric turbulance generator is investigated in this paper.The flow could be classified as steady one and unsteady one, according as whether the location and the dimension of low pressure zone in the flow change with time.The measurement repeatability of distortion factor in steady flow is better than that in unsteady flow.A simple and available method to simulate flow profiles is also discribed.