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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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numericalsimulationoninternalandexternalflowfieldofascalindirectaircoolingtower
, PP. 26-31
Keywords: scalindirectaircooling,numericalsimulation,ventilationrate,exitvelocity,porousmedium
Abstract:
accordingtotheactualsizeofcoolingtubebundleandthearrangementofcoolingtriangleofasurfacecondenseraluminumexchangers(scal)naturaldraftcoolingtower,thegeometricmodelofheattransferelementsatthetowerbottomwasestablished.onthebasisoftherngk？εturbulencemodelandporousmediummodel,three？dimensionalnumericalsimulationwascarriedoutfortheinnerandexternalflowfieldoftheaircoolingtower,toinvestigatetheinfluenceofenvironmentalconditionsonthetower'soperationperformance.theresultsshowthat,withanincreaseinambientwindspeed,theinletairspeedatwindwardsideofthetowerincreasesgradually,whilethatatcrosswindsideandleesidedecreasesandtendstobeobvious;thetowerventilationrateandoutletairspeedincreasesatfirstandthendecreases,andtheirmaximumvaluesappearwhenthewindspeedis2m/s.
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