- 相關(guān)推薦
Computations of wall distances by solving a transport equation
Abstract：Computations of wall distances still play a key role in modern turbulence modeling. Motivated by the expense involved in the computation, an approach solving partial differential equations is considered. An Euler-like transport equation is proposed based on the Eikonal equation. Thus, the efficient algorithms and code components developed for solving transport equations such as Euler and Navier-Stokes equations can be reused. This article provides a detailed implementation of the transport equation in the Cartesian coordinates based on the code of computational fluid dynamics for missiles (MI-CFD) of Beihang University. The transport equation is robust and rapidly convergent by the implicit lower-upper symmetric Gauss-Seidel (LUSGS) time advancement and upwind spatial discretization. Geometric derivatives must also be upwind determined to ensure accuracy. Special treatments on initial and boundary conditions are discussed. This distance solving approach is successfully applied on several complex geometries with 1-1 blocking or overset grids. 作者： Author： Jing-lei XU Chao YAN Jing-jing FAN 作者單位： National Laboratory for Computational Fluid Dynamics, Beihang University, Beijing 100191, P. R. China 期 刊： 應(yīng)用數(shù)學(xué)和力學(xué)（英文版） EISCI Journal： APPLIED MATHEMATICS AND MECHANICS 年，卷(期)： 2011, 32(2) 分類號(hào)： V211.3 Keywords： wall distance numerical simulation overset grid 機(jī)標(biāo)分類號(hào)： O4 O29 機(jī)標(biāo)關(guān)鍵詞： transport equation partial differential equations computational fluid dynamics boundary conditions approach implementation Navier-Stokes Euler based algorithms Special initial complex robust modern time key 基金項(xiàng)目： Project supported by the National Basic Research Programme of China，the Post-Doctoral Science Foundation of China【Computations of wall distances by so】相關(guān)文章：
第209講：wall-to-wall; wallflower05-04
the Great Wall05-04
The Great Wall(長(zhǎng)城)05-04
第210講：climb the wall / drive sb. up wall05-04
第169講：nothing special; so-so05-04
聚焦so的用法04-27
Determination of arterial wall shear stress04-27
Visiting the Great Wall(游長(zhǎng)城)05-04
比較so和 such05-04