简介：9月26日，随着一辆中巴车缓缓驶向洞口，目前世界上海拔最高的超特长公路隧道一一雀儿山隧道正式建成通车。雀儿山隧道攻克了高原高寒地区修建隧道的多个难题，打通了几十年来川藏北线的天险瓶颈，将助推藏区经济社会加快发展。

简介：Inordertostudytheeffectsofwetcompressiononatransoniccompressor,afull3-Dsteadynumericalsimulationwascarriedoutundervaryingconditions.Differentinjectedwaterflowratesanddropletdiameterswereconsidered.Theeffectofwetcompressionontheshock,separatedflow,pressureratio,andefficiencywasinvestigated.Additionally,theeffectofwetcompressiononthetipclearancewhenthecompressorrunsinthenear-stallandstallsituationswasemphasized.Analysisoftheresultsshowsthattherangeofstableoperationisextended,andthatthepressureratioandinletairflowratearealsoincreasedatthenear-stallpoint.Inaddition,itseemsthatthereisanoptimumsizeofthedropletdiameter.