附壁射流元件的仿真研究

以数值模拟为主要手段,研究一种附壁射流元件内部流场的速度分布和压力分布,并研究其非定常流动机理.提出主射流的偏转是由主射流两侧的压差导致射流偏斜,进而形成一低压涡流区,低压涡流诱导主射流附壁.附壁射流元件的偏转特性与其几何结构和流体雷诺数有关.在此基础上,用仿真模型模拟流场,优化结构,研究特性,为此类型附壁射流元件的结构改进、优化设计和应用提供了有效途径.

Numerical Simulation of Wall-Attached Jet Device

Numerical simulation is used to research the velocity distribution and pressure distribution of the flow field inside of the wall-attached jet device, as well as the mechanism of this kind of the unsteady flow. The deflection of the main jet, induced by the difference pressure of the two sides, forms a lower pressure area in one side, thus inducing the main jet attaching to the wall. The deflection characteristics of the wall-attached jet are related to its structure parameters and Reynolds number. Subsequently, a model is established and used for simulating the flow fields, thus optimizing the structure and application.