摘要
节制环是火炮制退机的关键部件,而节制环磨损是制退机最主要的故障之一。针对节制环表面出现的麻点、凹坑等磨损现象,引入空化与空蚀理论,对节制环磨损机理进行了分析。将节制环流道简化为突缩孔道,联合求解完全空化模型、混合两相流模型和标准k-ε湍流模型,对突缩孔道内的定常空化湍流进行了数值计算,结果表明空化发生的部位与节制环内表面发生空蚀磨损的部位是一致的。提出了一种节制环空蚀磨损量计算模型,可对节制环的故障预测与诊断提供参考。
The governing ring is a key component of gun recoil brake.One of the uppermost faults on recoil brake is the ring＇s wear.In light of the wear phenomena of pockmarks and delves on the surface of the ring,we introduce cavitating and cavitation damage theory to analyse the wear mechanism of the governing ring.The ring channel is simplified to an abrupt contraction channel.Though solving in conjunction the full cavitation model,the two-phase mixture flow model and standard k-ε turbulence model,the steady cavitation turbulence in abrupt contraction channel is calculated numerically.The results display that the location where the cavitation happens is in accord with the position on governing ring surface where the cavitation damage wear is found.A new model of cavitation damage computation is proposed and it can provide some references to the fault forecast and diagnosis.
出处
《计算机应用与软件》
CSCD
2011年第7期206-208,共3页
Computer Applications and Software
基金
总装备部重点科研项目
关键词
火炮
节制环
突缩管
空蚀
Gun Governing ring Abrupt contracting channel Cavitation damage
