Cavitation in Injection Nozzles - Effect of Model Parameters and Boundary Conditions
Cavitation in Injection Nozzles - Effect of Model Parameters and Boundary Conditions
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发表时间：
2001
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通讯作者：
W. Yuan;G. Schnerr
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作者：
W. Yuan;G. Schnerr
采用数值模拟的方法研究了喷射压力波动对喷嘴内空化过程的影响。数值方法的基础上预测的增长和崩溃的气泡与修改后的体积的流体技术（VOF）相结合。湍流模型采用k-Ω模型。计算结果表明，喷射压力、瞬时速度和空化过程的时间历程之间存在相位差。
This work deals with a numerical simulation of the effect of injection pressure fluctuations on the cavitation processes in injection nozzles. The numerical approach is based on predicting the growth and collapse of bubbles in combination with a modified Volume-of-Fluid technique (VOF). A k-omega model is applied for turbulence modeling. Calculations confirm that there exists phase shift among the time history of the injection pressure, the transient velocity, and the cavitation process.