论文部分内容阅读
介绍了准直管磨料射流的工作原理和特点 ,准直管磨料射流在准直管内的流动属于气 (汽 )、液、固多相混合介质的瞬变流动 .分析了磨粒在多相流体介质中的受力 ,推导了多相流体介质在准直管内有阻运动时的磨粒运动方程式 ,提出了各种损失的经验计算方法 .研究表明 ,气 (汽 )、液流体介质和磨料介质在准直管中的速度和密度是逐渐变化的 ,在 0 .4～ 3m管长范围内磨粒速度基本保持不变 ,短管时采用细磨粒 ,长管时采用粗磨粒 .
The working principle and characteristics of the collimated abrasive jet are introduced, and the flow of the collimated abrasive jet in the collimated tube belongs to the transient flow of gas (vapor), liquid and solid multiphase mixed media. The equation of motion of abrasive particles in multi-phase fluid medium with obstructed movement in the collimation tube is derived and the empirical calculation method of various losses is proposed. It is shown that the gas, gas fluid medium and abrasive medium The velocity and density in the collimator are gradually changing. In the range of 0.4 ~ 3m pipe length, the abrasive particle velocity remains basically unchanged, the fine abrasive particles are used in the short tube, and coarse abrasive particles are used in the long tube.