2023年第1期总第251期低温工程CRYOGENICSNo.12023SumNo.251不同激励幅值下液态甲烷贮箱增压过程压力波动特性研究袁晨1,2金滔1,2魏健健1,2(1浙江大学制冷与低温研究所杭州310027)(2浙江省清洁能源与碳中和重点实验室杭州310027)摘要:通过动网格模型与VOF模型的耦合,建立了晃动激励工况下液态甲烷贮箱增压排放过程三维计算模型。针对一直径为1.0m,筒段长度为2.0m的液态甲烷贮箱,研究了不同激励幅值下贮箱气枕压力变化特性,并对环形防晃板的控压性能进行评估。结果表明:对于激励幅值为0.020m和0.025m的工况,液面未出现破碎现象,气枕压降曲线较为平稳。添加防晃板后,液面发生破碎,气枕压降曲线产生明显波动。当激励幅值达到0.030m和0.035m时,液面发生破碎,气枕能量占比显著降低,气枕压力出现大幅下降。防晃板的添加可有效减缓气枕压力的下降。关键词:液态甲烷增压排放激励幅值防晃板压力波动中图分类号:TB657,TB663文献标识码:A文章编号:1000-6516(2023)01-0013-07收稿日期:2022-10-26;修订日期:2023-02-09基金项目:中央基本科研业务费浙江大学创新团队专项(2022FZZX01-09)。作者简介:袁晨,男,26岁,硕士研究生。通讯作者:魏健健,男,34岁,副教授。PressurefluctuationcharacteristicsofpressurizedprocessofliquidmethanetankunderdifferentexcitationamplitudesYuanChen1,2JinTao1,2WeiJianjian1,2(1InstituteofRefrigerationandCryogenics,ZhejiangUniversity,Hangzhou310027,China)(2KeyLaboratoryofCleanEnergyandCarbonNeutralityofZhejiangProvince,Hangzhou310027,China)Abstract:VOFmodelandDynamicMeshmodelwerecombinedtoestablishathree-dimen-sionalmodelforsimulatingthepressurizeddischargeprocessofliquidmethanetankunderslos-hingexcitation.Theullagepressurevariationcharacteristicsofthetankwithadiameterof1.0mandacylinderlengthof2.0mundervariousexcitationamplitudeswerestudiedandthepressurecontrolperformanceofanti-sloshingbafflewasevaluated.Theresultsshowthatnofragmentationoccursontheliquidlevelandthepressuredropcurveoftheullageisrelativelysmoothunderthe0.020mand0.025mexcitationamplitudes.Uponaddingananti-sloshingbaffle,theliquidlevelisbrokenandthepressuredropcurveoftheullagefluctuatessignificantly.Whentheexcitationamplitudereaches0.030mand0.035m,theullageisexcessivelycooledduetotheb...
