【摘要】 基于程序可靠性校验,本文对绕凸包流动进行了数值研究,其中主要对不同吹／吸气速度影响进行了参数化研究,并根据结果对吹／吸气控制分离机理予以了解释,表明:吹吸气对附面层的吹断／吸除作用以及其对主流的气动堵塞作用是正确分析其影响分离机理的关键。更多还原

【Abstract】 The paper presents numerical investigations about NASA’s Hump flow. The effects of suction and injection with different mass flow rates are studied. Some interesting phenomena about separation and reattachment locations that vary with suction or injection flow rates are captured. The undergoing mechanism is explained. It is indicated two factors cannot be ignored when we try to understand these phenomena. One is the effect that the suction or injection will suck out or blow away the coming low energy boundary layer. The other is the aerodynamic blockage effects introduced by suction or injection.更多还原