海洋通报
海洋通報
해양통보
MARINE SCIENCE BULLETIN
2015年
1期
59-64
,共6页
FVM%隐式%数值模拟%潮流泥沙%丹东港
FVM%隱式%數值模擬%潮流泥沙%丹東港
FVM%은식%수치모의%조류니사%단동항
FVM%implicit algorithm%numerical simulation%tidal currents and sediments%Dandong Harbor
采用LU-SGS隐格式离散N-S方程,求解过程引入超松弛系数。数值水槽试验研究发现,超松弛系数的引入可以提高计算结果收敛速度,其取值范围一般在1~1.3之间。应用LU-SGS算法,建立了高分辨率的大东港海域潮流泥沙数学模型,计算结果表明,该算法稳定性好,计算精度能够满足实际工程应用,具有模拟大范围海域潮流泥沙运动的能力。
採用LU-SGS隱格式離散N-S方程,求解過程引入超鬆弛繫數。數值水槽試驗研究髮現,超鬆弛繫數的引入可以提高計算結果收斂速度,其取值範圍一般在1~1.3之間。應用LU-SGS算法,建立瞭高分辨率的大東港海域潮流泥沙數學模型,計算結果錶明,該算法穩定性好,計算精度能夠滿足實際工程應用,具有模擬大範圍海域潮流泥沙運動的能力。
채용LU-SGS은격식리산N-S방정,구해과정인입초송이계수。수치수조시험연구발현,초송이계수적인입가이제고계산결과수렴속도,기취치범위일반재1~1.3지간。응용LU-SGS산법,건립료고분변솔적대동항해역조류니사수학모형,계산결과표명,해산법은정성호,계산정도능구만족실제공정응용,구유모의대범위해역조류니사운동적능력。
LU-SGS implicit algorithm is applied in the discrete N-S equations to solve the calculation by the relaxation coefficient whose value range is 1~1.3 according to the numerical flume experiment. Based on LU-SGS implicit algorithm, 2d tidal current and suspended sediment high resolution mathematical model in the Dadong Harbor is built with good verification which shows that the model can simulate the moving of tidal currents and suspended sediments.