淹没条件下自激振荡脉冲水射流冲蚀试验研究

为了提高射流的冲蚀能力,利用自制的自激振荡喷嘴,在淹没条件下进行水射流冲蚀自制砂浆试块的试验研究,得到不同工况下的水射流冲蚀效果.结果表明,靶距对冲蚀效果有明显的影响；脉冲射流的冲蚀体积与冲蚀深度随着腔长的增加,先降低再增加,到达峰值后逐渐递减,在腔长LC=4.5 mm时,冲蚀体积达到最大；在相同工况下,脉冲射流的冲蚀体积比连续射流提高约37.1％～52.3％.

Experimental Study on Self-Excited Oscillation Pulsed Water Jet Erosion under Submerged Conditions

In order to improve the jet erosion ability, the mortar block water jet eroding experiments were carried out by using own developed self-excited oscillation nozzle under submergence conditions, and the jet erosion effects were obtained under different operating conditions. The experimental results showed that target distance had obvious effects on the erosion effect; the jet erosion volume and erosion depth firstly decreased with the chamber length increasing, then increased, and gradually decreased after reaching the peak value; the erosion volume reaches the maximum at LC=4.5 mm; and pulse jet erosion volume increases by about 37.1%~52.3% than the continuous jet.