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基于CFD模拟的塔式建筑街区自然通风优化设计的相关研究.docx

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基于CFD模拟的塔式建筑街区自然通风优化设计的相关研究 Abstract Inrecentyears,naturalventilationhasbecomeapotentialmeansofbuildingenergysaving.Towerblocksarenowacommonfeatureofmanycities,buttheirdesigncreatescomplexissueswhentryingtonaturallyventilatethem.ComputationalFluidDynamics(CFD)simulationscanhelpoptimizenaturalventilationintowerblockneighborhoods.ThispaperreviewstherelevantresearchabouttheoptimizationofnaturalventilationintowerblockneighborhoodsusingCFDsimulations. Keywords:CFDsimulations,towerblocks,naturalventilation,neighborhood Introduction Towerblocksareoftenlocatedinurbanenvironmentswheretherearemanyconstraintstonaturalventilation,suchasthelackofgreenspaces,highbuildingdensities,andthepresenceoftrafficcongestion.Asaresult,residentsoftowerblocksareoftenfacedwithissuesrelatedtoindoorairquality,thermalcomfort,andnoisepollution.Toaddresstheseissues,thereisaneedfortheoptimizationofnaturalventilationintowerblockneighborhoods. CFDsimulationscanbeusedtomodelandoptimizenaturalventilationindifferentcontexts,includingtowerblocksneighborhoods.PreviousstudieshaveemployedCFDsimulationstoinvestigatehowspatialconfigurations,suchasbuildingheights,arrangements,anddensities,impactthenaturalventilationoftowerblockneighborhoods.ThispaperaimstoprovideareviewoftherelevantresearchonCFDsimulationsfortheoptimizationofnaturalventilationintowerblockneighborhoods. CFDSimulationsforNaturalVentilationOptimizationinTowerBlockNeighborhoods SeveralmethodshavebeenemployedintheliteraturetooptimizenaturalventilationintowerblockneighborhoodsusingCFDsimulations.Thesemethodscanbecategorizedintothreemaingroups,whicharediscussedindetailbelow. 1)BuildingGeometryOptimization Buildinggeometryoptimizationinvolvesthemanipulationofbuildingheight,buildingdensity,andspacingtoimprovenaturalventilationintowerblockneighborhoods.AstudybyCheongetal.(2017)usedCFDsimulationstoinvestigatetheeffectsoftowerblockheightonwinddirectionsandvelocity.Thestudyfoundthatforafour-buildingsquareconfiguration,buildingswithaheightof60morabovecouldgen