Coupling wake alignment lifting line method and boundary element method for open water and unsteady propeller simulation
Coupling wake alignment lifting line method and boundary element method for open water and unsteady propeller simulation
复制标题
开放水域和非定常螺旋桨模拟的耦合尾流对准升力线法和边界元法
DOI：
10.1016/j.oceaneng.2020.107738
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发表时间：
2020
影响因子：
5
通讯作者：
M. Abdel‐Maksoud
中科院分区：
文献类型：
--
作者：
Youjiang Wang;M. Abdel‐Maksoud
开发了一种耦合算法来加速开放水域和非定常计算的边界元方法。采用离散尾流片涡格升力线法进行全尾流对准来实现。描述了将提升线尾流片转换为边界元法尾流片的技术。然后对开放水域和不稳定情况进行数值模拟。结果表明，耦合方法预测的结果与边界元方法相似，特别是对于开阔水域的情况。还观察到计算时间明显减少，开放水域和非定常计算分别减少了 70% 和 65%。
A coupling algorithm is developed to accelerate the boundary element method for both open water and unsteady calculations. It is realized in the way that the full wake alignment is conducted using the vortex lattice lifting line method with discrete wake sheet. Techniques to convert wake sheets of lifting line to those for boundary element method are described. Numerical simulations for open water and unsteady case are then carried out. It shows that the coupling method predicts similar results as the boundary element method, especially for the open water case. Evident reduction of the computational time is also observed, which is 70% and 65% for open water and unsteady calculation, respectively.