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反應堆冷卻劑系統

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針對核反應堆冷卻劑系統中的主管道安注斜接管等溫橫向射流問題,應用計算流體力學商用軟體CFX進行等溫橫向射流流動的數值模擬,得出了典型運行工況下的三維流場分佈。深入研究了射流與主流在不同流速比情況下等溫橫向射流的流動特性、影響區域及主要影響因素,在所研究的參數範圍內,得出了流速比是決定等溫橫向射流流動特性的最重要因素,同時將數值模擬結果與流動可視化試驗結果進行了比較,二者吻合良好。
Inordertoinvestigatetheflowcharacteristicsofisothermaljetintocross-flowforasafetyinjection(SI)inclinedtubeinthereactorcoolingsystem,thenumericalsimulationswerecarriedoutatvariousvelocityratiosbetweenjetandmainflowbyusingthecommercialcomputationalfluiddynamicssoftwareCFX.Viathecomputations,the3-Dflowtracesofthetypicaloperationconditionwereobtained,alsotheflowcharacteristics,theeffectregionandthefactorsthatcontributetotheflowcharacteristicswerestudied.Basedontheresults,itcanbeconcludedthatthevelocityratiowasthemostimportantfactorinthisflowtype.Thecalculationswereagreedwellwiththevisualizationtests.
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