| A Novel VOF-Type Volume-Tracking Method for Free-Surface Flows Based on Unstructured Triangular Mesh |
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| 作者姓名： | 及春宁 王元战 王建峰 |
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| 作者单位： | School of Civil Engineering, Tianjin University, Tianfin 300072, China |
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| 基金项目： | This study is supported by the National Natural Science Foundation of China （Grant No. 50279027） and the Science Foundation of Tianjin Municipal Commission of Science and Technology （Grant No. 043114711 ） |
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| 摘 要： | A novel VOF-type volume-tracking method for two-dimensional free-surface flows based on the unstructured triangular mesh is presented. Owing to the inherent merit of the unstructured triangular mesh in fitting curved boundaries, this method can handle the free-surface problems with complex geometries accurately and directly, without introducing any complicated boundary treatment or artificial diffusion. The method solves the volume transport equation geometrically through the Modified Lagrangian-Eulerian Re-map （MLER） method, which is applied to advective fluid volumes. Moreover, the PLIC method is adopted to give a second-order reconstructed interface approximation. To validate this method, two advection tests were performed for the establishment of the accuracy and convergence rate of the solutions. Numerical results for these complex tests provide convincing evidence for the excellent solution quality and fidelity of the method.
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| 关 键 词： | 海洋工程 VOF 三角网目 流量 |
| 收稿时间： | 2005-07-14 |
| 修稿时间： | 2005-10-08 |
A Novel VOF-Type Volume-Tracking Method for Free-Surface Flows Based on Unstructured Triangular Mesh |
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| JI Chun-ning , WANG Yuan-zhan , WANG Jian-feng.A Novel VOF-Type Volume-Tracking Method for Free-Surface Flows Based on Unstructured Triangular Mesh[J].China Ocean Engineering,2005,19(4):529-538. |
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| Authors: | JI Chun-ning WANG Yuan-zhan WANG Jian-feng |
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| Abstract: | A novel VOF-type volume-tracking method for two-dimensional free-surface flows based on the unstructured triangular mesh is presented. Owing to the inherent merit of the unstructured triangular mesh in fitting curved boundaries, this method can handle the free-surface problems with complex geometries accurately and directly, without introducing any complicated boundary treatment or artificial diffusion. The method solves the volume transport equation geometrically through the Modified Lagrangian-Eulerian Re-map (MLER) method, which is applied to advective fluid volumes. Moreover, the PLIC method is adopted to give a second-order reconstructed interface approximation. To validate this method, two advection tests were performed for the establishment of the accuracy and convergence rate of the solutions. Numerical results for these complex tests provide convincing evidence for the excellent solution quality and fidelity of the method. |
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| Keywords: | volume-of-fluid modified Lagrangian-Eulerian re-map (MLER) unstructured triangular mesh |
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