| 查看: 364 | 回复: 0 | |||
[交流]
移动嵌入高斯矩封闭微流中的应用
|
|
The application of the Gaussian moment closure to continuum and microscale flows with embedded, and possibly moving, boundaries is considered. The Gaussian moment closure is briefly reviewed, as is an extension that allows for the treatment of flow of diatomic gases. A parallel upwind, finite volume scheme with adaptive mesh refinement using a Roe-type numerical flux function is described for solving the hyperbolic system of partial differential equations arising from this closure on multiblock meshes with embedded and possibly moving boundaries. The purely hyperbolic nature of moment equations makes them particularly insensitive to discretizations involving grids with irregularities. Typical of adaptive mesh-refinement, embedded-boundary, and Cartesian cut-cell treatments, mesh irregularities are difficult to deal with when second derivatives are required by the physical model. Such is the case for the Navier–Stokes equations. Numerical solutions to mathematical descriptions involving second derivatives show significantly degraded solution quality as compared to solutions of first-order quasi-linear moment equations. Solid-wall boundary conditions are implemented via a Knudsen-layer approximation. Comparisons are made between numerical solutions of the Gaussian model on both body-fitted meshes and meshes with embedded boundaries, as well as to experimental and approximate analytic results for a variety of flow problems. The benefits and potential of the proposed approach for unsteady microscale flow applications having complex geometries are clearly demonstrated. Read More: www.tianyuan520.com |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : 1.J052576.pdf
2014-09-29 22:07:04, 1.44 M
» 猜你喜欢
341求调剂
已经有7人回复
-
328求调剂，英语六级551，有科研经历
已经有8人回复
-
293求调剂
已经有12人回复
-
070300化学319求调剂
已经有4人回复
-
268求调剂
已经有9人回复
-
301求调剂
已经有4人回复
-
0703化学336分求调剂
已经有5人回复
-
301求调剂
已经有4人回复
-
材料专硕306英一数二
已经有9人回复
-
304求调剂
已经有8人回复
点击这里搜索更多相关资源
