Particle Velocities of High Velocity Air Arc Spraying Air(初三适用)超音速电弧喷涂粒子速度的测定
A test facility for swirl combustor with staged air injection was fabricated and set up. The Three Dimension-Laser Particle Dynamic Analyzer ( PDA) was utilized to measure the instantaneous gas velocity of the swirling turbulent reacting flow. 本文建立了采用分级进风的旋流燃烧室实验台,实现了用三维激光粒子动态分析仪(PDA)测最湍流旋流燃烧的热态瞬时速度场。
In this paper, a water droplet motion model in thermal insulation countercurrent air flow is built based on the non-spherical particle drag coefficient, and the explicit formulation for terminal velocity is derived. 采用非球形颗粒的阻力系数关联式,建立了水滴在绝热逆流空气中的动力学方程,得出了水滴所受阻力及其最终沉降速度的计算方法。