...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>European Journal of Mechanics, B. Fluids >A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms
【24h】

A numerical wave-maker for internal solitary waves with timely updated mass source/sink terms

机译：具有及时更新的大规模源/水槽术语的内部孤独波的数值波动

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

On the basis of the two-dimensional Navier-Stokes equations, a new numerical method is proposed to generate internal solitary waves (ISWs) of expected parameters by adding a source term above the interface and a sink term below the interface into the continuity equation. Fluxes between the source and the sink are balanced to assure mass conservation, and the source/sink regions (the spatial windows over which the sink/source terms are placed) are adjusted as functions of time with the interface motion. Thus, the nonphysical trailing waves can be eliminated, which makes it easy to assure the prescribed ISW parameters. Moreover, a new layout is presented to avoid the difficulty of sizing and positioning the source/sink region, which has been proved to be an intrinsic drawback of the traditional mass source method. Numerical experiments are performed to validate the proposed method by analyzing the wave displacements and vertical profiles of velocity fields. It is shown that the numerical waveform remains stable with much less trailing waves than previous methods, and the numerical results are in good agreement with theoretical and experimental results. In addition, through sensitivity analysis, a reasonable method to determine the width of source/sink region is recommended. (C) 2017 Elsevier Masson SAS. All rights reserved.
机译：在二维Navier-Stokes方程的基础上，提出了一种新的数值方法，通过在接口上方的源极限和接口下方的接口下方进入连续性方程来生成预期参数的内部孤立波（ISW）。源和水槽之间的助熔剂是平衡的，以确保质量保护，并且源/沉积区域（放置源术语的空间窗口）被调整为具有接口运动的时间的功能。因此，可以消除非物理尾部波，这使得可以容易地确保规定的ISW参数。此外，提出了一种新的布局，以避免施加和定位源/水槽区域的难度，这被证明是传统质量源方法的内在缺点。进行数值实验以通过分析速度场的波位移和垂直轮廓来验证所提出的方法。结果表明，数值波形保持稳定，其尾波比以前的方法远低得多，数值结果与理论和实验结果吻合良好。另外，通过灵敏度分析，建议使用合理的方法来确定源极/沉积区域的宽度。 （c）2017年Elsevier Masson SAS。版权所有。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号