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简介：Dearreaders,Howdoyougetaroundfromplacetoplace?Maybeyoutakethesubwayorridethebus.Butlikemillionsofothers,Idriveacar.Itsveryconvenient,butunfortunatelyparkingisnotalwayssoconvenient!

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简介：ItwasSunday.AfterIfinishedmyhomework,Iwenttovisitmyuncle.Ontheway,Isawalittlegirlcryingonthesideoftheroad.Iwasverymuchsurprised,soIwentovertoherandasked,“What'sthematter

简介：OnceagainChristmasiscomingtousandanotheryearisabouttodepart.OnbehalfofallthemembersoftheEditorialOffice,I'dliketoexpressourappreciationstoauthors,readersandothersconcernedforEcologicalEconomyforyourgreatsupportandencouragement.WiththecomingoftheNewYear,pleaseacceptoursinceregreetingsandbestwishes.Inthepastyear,whetheryoureadandcontributedormadecriticismandproposalsforus,wearegratefulforyouractiveparticipation.Specially,Iwouldliketotakethisopportunitytothankinterna-tionalfriends:

简介：<正>Onthe10thanniversaryofthefirstissueofEcologicalEconomy,pleaseacceptoursinceregreetingsandbestwishesforthenewbeginning.Thisissueisthenewcopyeditedbyoureditorialoffice,thatis,thecurrenteditorialteam,includingtheeditorialboardmembers,willbeginthenewmissionsofeditingandpublishing.Fromthefirstissueof2014,thisjournalwillbeoperatedbytheeditorialteamorganizedbyMr.WANGChao-chao.

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简介：<正>Onceagainthenewyeariscomingtousandanotheryearisabouttodepart.OnbehalfofallthemembersoftheEditorialOffice,I’dliketoexpressourappreciationstoauthors,readersandothersconcernedforEcologicalEconomyforyourgreatsupportandencouragement.WiththecomingoftheNewYear,pleaseacceptoursinceregreetingsandbestwishes.Inthepastyear,whetheryouread

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简介：NASArotor37wasusedasablindtestcaseforturbomachineryCFDbytheTurbomachineryCommitteeoftheIGTI.Therotorisatransoniccompressorwithatipspeedof454m/s(1500ft/s)andarelativelyhighpressureratioof2.1.Itwastestedinisolationwithacircumferentiallyuniforminletflowsothattheflowthroughitshouldbesteadyapartfromandeffectsofpassagetopassagegeometryvariationandmechanicalvibration.Assuchitrepresentsthesimplestpossibletypeoftestforthree-dimensionalturbomachineryflowsolvers.Howerver,therotorstillpresentsarealchallengeto3Dviscousflowsolversbecausetheshockwave-boudarylayerinteractionisstrongandtheeffectsofviscosityaredominantindeterminingtheflowdeviationandhencethepressureration.Elevenblindsolutionsweresubmittewdandinadditionanon-blindsolutionwasusedtopreparefortheexercies.ThispaperreviewstheflowinthetestcaseandthecomparisonsoftheCFDsolutionswiththetestdata.LessonsforboththeFlowphysicsintransonicfansandfortheapplicationofCFDtosuchmachinesarepointedout.