SHIPENGINEERING船舶工程Vol.45No.12023总第45卷，2023年第1期—63—基于RANS/LES混合方法的近岸水域波浪增阻影响的数值模拟黄鑫伟a，程志友a，胡健a，胡成b（重庆交通大学，a.航运与船舶工程学院；b.土木工程学院，重庆400074）摘要：分析船舶在近岸水域航行时所受波浪增阻大小的影响因素，以寻求降低波浪增阻的方法。基于近岸水域中船舶阻力理论，采用雷诺平均（RANS）和大涡模拟（LES）相结合的方法进行数值求解，并运用两相流方法和造波消波技术建立数值水池模型。用Fluent求解器对船舶在不同工况下的波浪增阻进行数值模拟。试验结果表明：用该方法对近岸水域航行的船舶进行波浪增阻的数值模拟可有效提高计算机运算效率，在粗糙网格层面上得到的计算结果精度良好；船舶在近岸水域中航行时的波浪增阻随波高的增加而增加，并且与船体湿润面积呈正相关；船舶在近岸水域以中低速航行时所受波浪增阻随弗劳德数的增加而增加。该研究为近岸水域通航船舶减小航行阻力提供了可行的方法与思路。关键词：RANS/LES混合方法；近岸水域；波浪增阻；数值模拟中图分类号：U661.1文献标志码：A【DOI】10.13788/j.cnki.cbgc.2023.01.10NumericalSimulationofInfluenceofRoughDraginCoastalWatersBasedonRANS/LESHybridMethodHUANGXinweia,CHENGZhiyoua,HUJiana,HUChengb(ChongqingJiaotongUniversity,a.SchoolofShippingandMarineEngineering;b.SchoolofCivilEngineering,Chongqing400074,China)Abstract:Theinfluencefactorsofrough-searesistanceonshipssailingincoastalwatersareanalyzedtofindwaystoreducerough-searesistance.Basedontheshipresistancetheoryinnearshorewaters,thenumericalsolutioniscarriedoutbycombiningReynoldsaverageNavierStokes(RANS)andlargeeddysimulation(LES),andanumericalpoolmodelisestablishedbytwo-phaseflowmethodandwavegenerationandeliminationtechnology.TheFluentsolverisusedtosimulatetherough-searesistanceofshipsunderdifferentworkingconditions.Theexperimentalresultsshowthat:thenumericalsimulationofrough-searesistanceofshipssailinginnearshorewaterscaneffectivelyimprovethecomputationalefficiency,andthecomputationalresultsonroughgridlevelareofgoodaccuracy;therough-searesistanceofashipinnearshorewatersincreaseswiththeincreaseofwaveheightandispositivelycorrelatedwiththewetareaofsh...
