舰船电子工程
艦船電子工程
함선전자공정
Ship Electronic Engineering
2015年
10期
156-161
,共6页
流场%计算网格%流体体积函数%数值计算
流場%計算網格%流體體積函數%數值計算
류장%계산망격%류체체적함수%수치계산
flow field%computational grid%VOF method%numerical calculation
以 DTMB5415为研究对象，采用 RANS 方法结合 VOF 模型，研究了网格因素以及湍流模型对阻力、波形和流场预报精度的影响。首先设计了粗糙、中等和精细共三套网格，分别进行兴波流场计算，通过比较试验测试的阻力和波形数据，确定中等网格划分方式既能保证计算的准确性又能保持较高的计算效率。其次选择三种湍流模型，对总阻力及舷侧波高进行数值计算，SST k‐ω湍流模型在保证计算效率的情况下可满足计算精度要求。最后采用中等网格划分以及 SST k‐ω模型进行计算，并同试验测量结果进行比对，结果表明船侧表面附近数值计算波形分布与试验结果基本一致。
以 DTMB5415為研究對象，採用 RANS 方法結閤 VOF 模型，研究瞭網格因素以及湍流模型對阻力、波形和流場預報精度的影響。首先設計瞭粗糙、中等和精細共三套網格，分彆進行興波流場計算，通過比較試驗測試的阻力和波形數據，確定中等網格劃分方式既能保證計算的準確性又能保持較高的計算效率。其次選擇三種湍流模型，對總阻力及舷側波高進行數值計算，SST k‐ω湍流模型在保證計算效率的情況下可滿足計算精度要求。最後採用中等網格劃分以及 SST k‐ω模型進行計算，併同試驗測量結果進行比對，結果錶明船側錶麵附近數值計算波形分佈與試驗結果基本一緻。
이 DTMB5415위연구대상，채용 RANS 방법결합 VOF 모형，연구료망격인소이급단류모형대조력、파형화류장예보정도적영향。수선설계료조조、중등화정세공삼투망격，분별진행흥파류장계산，통과비교시험측시적조력화파형수거，학정중등망격화분방식기능보증계산적준학성우능보지교고적계산효솔。기차선택삼충단류모형，대총조력급현측파고진행수치계산，SST k‐ω단류모형재보증계산효솔적정황하가만족계산정도요구。최후채용중등망격화분이급 SST k‐ω모형진행계산，병동시험측량결과진행비대，결과표명선측표면부근수치계산파형분포여시험결과기본일치。
The influence of grid division and turbulent model to resistance ,wave ship and precision of flow prediction has been investigated by selecting ship model DTMB5415 as calculated object and using RANS method and VOF model . First ,coarseness ,middle and huge grid division have been designed to calculate wave flow field .By comparing resistance and wave ship date of the test with calculating data ,the results show that middle count grid divisions can obtain veracity of calcu‐late results and higher calculate efficiency .Second ,three turbulent flow models have been used to compute total resistance and ship wave .The SST k‐ω turbulent flow model can satisfy calculated results accuracy under high calculate rate .Finally , middle grid division and SST k‐ω turbulent flow model have been selected to calculated ship wave .The results showed that the calculated results have been agreed with the experiment data .
