WATER TUNNEL EXPERIMENTAL INVESTIGATION ON THE DRAG REDUCTION CHARACTERISTICS OF THE TRAVELING WAVY WALL

在线阅读 下载PDF 导出详情
摘要 DragreductionexperimentofthetravelingwavywallathighReynoldsnumberisconducted.Asuitoftravelingwavywalldeviceisdeveloped.Thedragforcesofthetravelingwavywallwithvariouswavespeeds(c)aremeasuredunderdifferentwaterspeeds(U)intheK15cavitationwatertunnelandarecomparedwiththatoftheflatplate.Theresultsshowthatthemeandragforceofthetravelingwavywallhavedecreasedandthenincreasedwithoscillationfrequencyincreasingatthesameflowspeed.Underdifferentflowspeeds,whentravelingwavewallreachedtotheminimumofdragforce,thecorrespondingtheratioofthewallmotionphasespeedctoflowspeedU,c/Uisslightlydifferent.Withintheparametersoftheexperiment,whenc/Ureachesacertainvalue,thedragforceofthetravelingwavywallcanbelessthanthatoftheflatplate.Thedragreductioncanbeupto42%.Furthermore,asthevalueofc/Uincreases,thetravelingwavywallcanrestraintheseparationandimprovethequalityofflowfield.
机构地区 不详
出版日期 2011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)
  • 相关文献