摘要
Inmanyengineeringpractices,frequentlyanimpulsivewaveisaconsequenceofdischargeofashockwavefromtheexitofatubeleadingtoanannoyingnoiselikasonicboom.Theimpulsivenoisehasoftenbeenamajorfactortolimittheperformanceofflowdevicesaswellastoaffecthazardousinfluencesonhumanbeing.Thecorrentpaperdescribesanewcontrolmethodforthereductionofimpulsivewave.Anexperimentusingasimpleshocktubewascarriedouttoexaminetheeffectofacavity/helicalvanesystemontheimpulsivewavestrength.Theresultingimpulsivewavewasinfluencedbythedetailedconfigurationofthehelicalvaneinsidethecavitywhichislocatedatthevicinityoftheexitofatube.Theeffectofthehelicalvanewascomparedwithnohelicalvaneteststoensurevalidationofthiskindofcontrolstrategy,Theresultsshowedthatthestrengthoftheimpulsivewavecouldbesignificantlyreducedbythecurrentpassivecontrolusingthecavity/helicalvanesystem.
出版日期
1999年01月11日(中国期刊网平台首次上网日期,不代表论文的发表时间)