本文選題：Multi-quadric插值 + 網格變形　； 參考：《船舶力學》2016年04期

【摘要】：在非結構切分網格的框架下,發(fā)展了一種基于Multi-Quadric插值的變形網格技術,結合CFD軟件STARCCM+,采用SST湍流模型,并以VOF法進行自由液面的追蹤,將該變形網格技術應用于帶附體穿浪雙體船的阻力預報中。分別以網格的拉伸變形和斜率變形實現了阻流板和尾楔的邊界運動,計算了阻流板高度為4 mm、6mm和8 mm以及尾楔角度為5°、10°和15°時的工況。計算結果表明,變形網格方法與固定網格方法取得了相同的精度;同試驗值相比,在不同工況下變形網格最大平均誤差約為6.67%,驗證了其可行性。但是,相比于固定網格方法,變形網格方法的計算時耗最大可減少40%,因此采用該變形網格方法可極大地提高帶可變形附體的船舶的阻力預報效率。
[Abstract]:In the framework of unstructured mesh segmentation, a deformed mesh technique based on Multi-Quadric interpolation is developed. Combined with CFD software STARCCM, SST turbulence model is adopted and the free surface tracing is carried out by VOF method. The deformable mesh technique is applied to the resistance prediction of a wave-piercing catamaran with appendages. The boundary motions of the baffle plate and the tail wedge are realized by the tensile deformation and slope deformation of the mesh, respectively. The working conditions of the baffle plate with the height of 4 mm / 6 mm and 8 mm and the tail wedge angle of 5 擄/ 10 擄and 15 擄are calculated. The calculation results show that the deformed mesh method has the same accuracy as the fixed mesh method, and the maximum average error of the deformed grid is about 6.67 under different working conditions, which verifies its feasibility. However, compared with the fixed mesh method, the computational time consumption of the deformable grid method can be reduced by 40%, so the resistance prediction efficiency of ships with deformable appendages can be greatly improved by using the deformable grid method.
【作者單位】： 哈爾濱工程大學船舶工程學院;
【基金】：國家自然科學基金資助(51509053)
【分類號】：O35
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本文編號：1787213