计算物理
計算物理
계산물리
CHINESE JOURNAL OF COMPUTATIONAL PHYSICS
2005年
1期
7-12
,共6页
坐标变换%网格生成%Lagrange方法%Euler方程
坐標變換%網格生成%Lagrange方法%Euler方程
좌표변환%망격생성%Lagrange방법%Euler방정
coordinate transformation%mesh generation%Lagrangian methods%Euler equations
提出求解流体力学Euler方程的自适应坐标变换方法,它们保持网格夹角近似不变、保持物质界面为Lagrange描述,且使得网格速度与流体速度的差在最小二乘意义下达到极小.所提出的新坐标系能自适应于流体流场的若干重要特性.
提齣求解流體力學Euler方程的自適應坐標變換方法,它們保持網格夾角近似不變、保持物質界麵為Lagrange描述,且使得網格速度與流體速度的差在最小二乘意義下達到極小.所提齣的新坐標繫能自適應于流體流場的若榦重要特性.
제출구해류체역학Euler방정적자괄응좌표변환방법,타문보지망격협각근사불변、보지물질계면위Lagrange묘술,차사득망격속도여류체속도적차재최소이승의의하체도겁소.소제출적신좌표계능자괄응우류체류장적약간중요특성.
A series of adaptive corrdinate transformation methods are proposed in which the grid angles are preserved approxi-mately, and the material interface is kept to be Lagrangian description and a minimum difference (in the least-squares sense)be-tween the mesh velocity and the fluid velocity is achieved. The new coordinate system is adapted to important features of flow fields.