脉冲射流水力共振系统参数优化

脉冲射流水力共振系统各参数的优化组合是提高射流功效的关键因素之一。介绍了Matlab直接搜索算法,并利用其不需要目标函数梯度信息的特点,对脉冲射流系统的6个主要参数进行了优化求解。对比优化前后的喷嘴压力峰值,结果表明:优化前,喷嘴压力幅度提高不到1%,而优化后脉冲射流水力系统喷嘴处的压力峰值提高了40.9%,脉冲射流系统性能得到了较大的改善。

Parameter optimization of pulsed jet hydraulic resonance system

The optimized combination of parameters of pulsed jet hydraulic resonance system is a key factor to improve the efficacy of pulsed jet.The direct search algorithm of Matlab is introduced in this paper.Six parameters of pulsed jet system are optimized based on its character which can solve optimal problems without gradient of objective functions.A comparison is made between peak values of nozzle pressures before and after optimization.The conclusion of comparison shows that the amplitude of nozzle pressure has gone up by 40.9% after optimization rather than less than 1% before.So the performance of pulsed jet is improved obviously with optimized parameters.