王秋旺
新一代传热技术、新型高效换热设备、建筑节能与人居环境
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- 姓名:王秋旺
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学术头衔:
博士生导师, 教育部“新世纪优秀人才支持计划”入选者
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学科领域:
工程热物理
- 研究兴趣:新一代传热技术、新型高效换热设备、建筑节能与人居环境
王秋旺,男,1969年9月生,湖北黄冈人。博士,教授,博士生导师。教育部“新世纪优秀人才支持计划”入选者,教育部霍英东教育基金会高等院校青年教师基金获得者,西安交通大学首批“腾飞人才特聘教授”。1987年考入西安交通大学动力系,1996年毕业于西安交通大学能源与动力工程学院,获工程热物理专业博士学位并留校任教。1996年被评选为“西安交通大学十大杰出学子”和“陕西省优秀毕业生”,1998年晋升为副教授,2001年破格晋升为教授,2003年晋升为博士生导师。1998年5月至1999年3月任香港城市大学访问学者,2003年9月至2003年12月任日本九州大学客座教授。主讲本科生《传热学》、《计算流体力学与传热学》和研究生《高等传热学》等课程。研究兴趣为新一代传热技术、新型高效换热设备、建筑节能与人居环境等。作为课题负责人承担国家863计划子课题、国家自然科学基金重大项目三级子课题、国家自然科学基金面上项目、武器装备预研基金项目及企业委托项目20余项,近5年科研经费逾200余万元。获国家级及省部级奖励3项,所领导的课题组曾获西安交通大学2004年度HeatCraft“杰出团队奖”。主编/参编教材著作3本,发表科研论文100余篇,其中国际杂志及国际会议40余篇,国内杂志40余篇,40余篇为SCI/EI收录,所发表的国际杂志论文被他引20余次。已申请国家发明专利5项。独立指导研究生30余名,协助指导研究生8名,已有4人获博士学位,7人获硕士学位。现任中国动力工程学会自控专委会委员,《工业加热》杂志编委,《ASME Journal of Heat Transfer》、《International Journal of Heat and Mass Transfer》、《Experimental Thermal and Fluid Science》、《Applied Thermal Engineering》及国内10余种学报级杂志的论文评阅人,全国工业电热设备标准化技术委员会电热国际标准的审查人,西安交通大学研究生教育质量检查与评估专家组成员,西安交通大学能源与动力工程学院第七届学位评定分委员会委员。
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王秋旺
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-1年11月30日
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王秋旺
,-0001,():
-1年11月30日
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【期刊论文】An Experimental Study of Shell-and-Tube Heat Exchangers With Continuous Helical Baffles
王秋旺
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-1年11月30日
Twoshell-and-tubeheatexchangers(STHXs)usingcontinuoushelicalbafflesinsteadofsegmentalbafflesusedinconventionalSTHXswereproposed,designed,andtestedinthisstudy.ThetwoproposedSTHXshavethesametubebundlebutdifferentshellconfigura-tions.Theflowpatternintheshellsideoftheheatexchangerwithcontinuoushelicalbaffleswasforcedtoberotationalandhelicalduetothegeometryofthecontinuoushelicalbaffles,whichresultsinasignificantincreaseinheattransfercoefficientperunitpressuredropintheheatexchanger.Properlydesignedcontinuoushelicalbafflescanreducefoulingintheshellsideandpreventtheflow-inducedvibrationaswell.TheperformanceoftheproposedSTHXswasstudiedexperimentallyinthiswork.TheheattransfercoefficientandpressuredropinthenewSTHXswerecomparedwiththoseintheSTHXwithsegmentalbaffles.Theresultsindicatethattheuseofcontinuoushelicalbafflesresultsinnearly10%increaseinheattransfercoefficientcomparedwiththatofconventionalsegmentalbafflesforthesameshell-sidepressuredrop.Basedontheex-perimentaldata,thenondimensionalcorrelationsforheattransfercoefficientandpres-suredropweredevelopedfortheproposedcontinuoushelicalbaffleheatexchangerswithdifferentshellconfigurations,whichmightbeusefulforindustrialapplicationsandfur-therstudyofcontinuoushelicalbaffleheatexchangers.ThispaperalsopresentsasimpleandfeasiblemethodtofabricatecontinuoushelicalbafflesusedforSTHXs.
heat transfer,, pressure drop,, shell-and-tube heat exchanger,, continuous helical baffles
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王秋旺
,-0001,():
-1年11月30日
Three-dimensionalturbulentflowandheattransferinaninternallyfinnedtubewithablockedcore-tubehavebeennumericallystudiedbytherealizablek−εturbulencemodelwiththewall-functionmethod.Thenumericalmethodisvalidatedbycomparingthecalculatedresultswithexperimentaldata.Therangeofratioofblockedcore-tubeoutsidediametertoouter-tubeinsidediameter(d0/Di)isfrom0.25to0.75.Thecomputationalresultsdemonstratedthatthereexistsanoptimalratioof(d0/Di)underbothidenticalmassflowrateandidenticalpressuredrop.Theoptimalratioof(d0/Di),whichisreducedwiththeincreaseofmassflowrate,isapproximately0.5to0.625atgivenmassflowrateforbothconstantwalltemperatureanduniformwallheatflux.Theoptimalratioof(d0/Di)atagivenpressuredropisfrom0.44to0.50,whichisalsoslightlyreducedwiththeincreaseofpressuredrop.Furthermore,theoptimalratioof(d0/Di)isnotsensitivetothenumberofcross-sectionwavyfinsofaninternallylongitudinalfinnedtube,intherangeofafinwavenumberof15–25.
Longitudinal Finned Tube,, optimal diameter ratio
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王秋旺
,-0001,():
-1年11月30日
Inthefirstpartofthiswork(PartI),wepresentedandvalidatedtheDSMC-HFSmethod,whichcanbeusedtodealwithheatfluxspecifiedboundaryconditionsinDSMCsimula-tions.Inthisarticle,themethodisappliedtodemonstratethegeneralpropertiesofrarefieddiatomicgaseousflowinamicrochannelunderuniformheatfluxboundaryconditions.Theeffectsofwallheatfluxongaseousflowandheattransfercharacteristicsareinvestigatednumericallyanddiscussedindetail.Itcanbeconcludedfromthepresentresearchthatgaseousrareficationandcompressibilityincreasewiththeincreaseofthewallheatflux.Gasaccelerationathigherwallheatfluxismoreobviousthanthatatlowerwallheatflux.Thehighwallheatfluxreducesthemassflowrateandelevatestheheattransferabilityexceptatthechannelinlet.
DSMC,, Heat Flux Specified Boundary Condition
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王秋旺
,-0001,():
-1年11月30日
Forflowsassociatedwithmicroelectromechanicalsystems(MEMS),theheatfluxspeci-fied(HFS)boundaryconditionexistsbroadly.However,problemswiththeHFSboundaryconditionhavenotbeenwellrealizedinthesimulationsofmicrochannelflowsusingthedirect-simulationMonteCarlo(DSMC)method.Inthepresentwork,inversetemperaturesampling(ITS)isusedtodealwithdiatomicgaseousflowandheattransferinamicrochan-nel.Thistechniqueprovidesanapproachtocalculatethemolecularreflectivecharacteristictemperaturefromthemolecularincidentenergyandtheheatfluxatthewallboundary.CoupledwiththeDSMCmethod,thisdiatomicmoleculeITStechniquecanbeusedtotreattheHFSboundaryconditionsintheDSMCmethod.Verificationindicatesthatthepro-poseddiatomicmoleculeITSmethodcanaccuratelysimulatethegaseousflowandheattransfer.InPartIIofthiswork,theproposedmethodisappliedtodemonstrategeneralmicrochannelgaseousflowpropertiesunderuniformheatfluxboundaryconditions.atthesametime,thenewmethodisadoptedtonumericallyinvestigatetheeffectsofwallheatfluxongaseousflowandheattransferproperties.
DSMC,, Heat Flux Specified Boundary Condition
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王秋旺
西安交通大学学报,2004,38(9):881~886,-0001,():
-1年11月30日
在介绍螺旋折流板管壳式换热器的结构及原理的基础上,对壳程传热强化及阻力特性的研究现状进行了总结,分析了壳侧流体的流动和换热机理,表明螺旋折流板结构是改善壳侧流动换热性能的有效措施与弓型折流板换热器相比,螺旋折流板换热器的最大特点是单位压降下的壳侧换热系数高。结合具体实例介绍了其在石油化工、能源动力及核能应用等行业中的应用前景。关于螺旋折流板换热器,还有许多问题需要进一步研究,如流动换热的机理以及影响流动换热机理的几何因素、相变情形、介质物性等。
螺旋折流板, 管壳式换热器, 壳程强化
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【期刊论文】Natural convection in a square enclosure with an internal isolated vertical plate
王秋旺, Q.W. Wang, M.Yang and W.Q. Tao, Xi'an, P.R.C.
W,-0001,():
-1年11月30日
Numerical computations were performed for the average Nusselt number at an internal vertical plate situated in a square enclosure, with the inner plate and the bounding wall of the enclo-sure maintained at uniform but different temperatures. Natural con-vection occurred in the air which occupied the enclosure space. The position of the inner vertical plate within the enclosure was varied parametrically. The plate height-cavity height ratio was 0.513. For narrow distance between the inner plate and the bounding wall the inner plate Nusselt number was enhanced. Aside from this, the plate average Nusselt number was remarkably insensitive to the plate position. The effect of the Rayleigh number on the velocity and temperature fields and local Nusselt numbers are also discussed. The agreement between the predicted flow pattern for Ra=1.1
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王秋旺, Q.W. Wang, J.G. Wei, W.Q. Tao
Heat and Mass Transfer 33(1998)273-280,-0001,():
-1年11月30日
In this paper, a SIMPLE-like algorithm on collocated grid system has been developed. The ability to suppress the spurious pressure field is achieved via introducing the pressure difference between adjacent two grid points into the convection-diffusion finite difference scheme, and the interfacial velocity is obtained by simple linear interpolation. The differencing scheme, discretization of governing equations and solution procedure of the algorithm are described in detail. In order to check the validity of the algorithm, several test cases which have analytical or benchmark solutions are presented. Good agreements are obtained between the numerical and the corresponding analytical or benchmark solutions. The ability of the improved algorithm to suppress the spurious pressure field is demonstrated via a 3-D example.
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