《CFX4培训》（英文版）Lecture 2 Geometry Creation

Lecture 2 Geometry Creation 几何构体 2-1 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-1 CFX-4.3 V4.3.1H Lecture 2 Geometry Creation 几何构体

Multi-block grids The geometry is a set of hexahedral solids which have a logical representation Each block in the geometry is called a ' solid Each solid in the geometry can represent a fluid, porous or solid region 2-2 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-2 CFX-4.3 V4.3.1H Multi-block Grids The geometry is a set of hexahedral solids which have a logical representation. Each block in the geometry is called a ‘solid’. Each solid in the geometry can represent a fluid, porous or solid region

Multi-block-Connections Solids which meet at whole faces are automatically connected If solids meet where one face is adjacent to part of another, constraints must be used to define the interface connection 约束条件 Constraints are used to obtain a consistent grid 2-3 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-3 CFX-4.3 V4.3.1H Multi-block -Connections Solids which meet at whole faces are automatically connected. If solids meet where one face is adjacent to part of another, constraints must be used to define the interface connection. 约束条件 Constraints are used to obtain a consistent grid

Multi-block Concept Multi-block: Multiple blocks joined to form the flow domain Each block has 6 faces 8 vertices 12 edges Structured grid for each block Each block is composed of cells 2D-cells form a rectangular array 3D-cells form a cuboidal array 2 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-4 CFX-4.3 V4.3.1H Multi-block Concept Multi-block: - Multiple blocks joined to form the flow domain. - Each block has 6 faces, 8 vertices, 12 edges. - Structured grid for each block. - Each block is composed of cells > 2D - cells form a rectangular array > 3D - cells form a cuboidal array

T-Junction EXample 2-5 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-5 CFX-4.3 V4.3.1H T-Junction Example

AEATECHoLoG) Square to circular duct Example 2-6 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-6 CFX-4.3 V4.3.1H Square to Circular Duct Example

AEATECHNOLoGY ENGINEERING SOFTWAR The power of multi-block Use fewer cells, less memory and CPU time Single block Two blocks 2-7 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-7 CFX-4.3 V4.3.1H The Power of Multi-Block Use fewer cells, less memory and CPU time. Single block Two blocks

AEA TECHNoLoG) The Power of multi-Block Reduce cell distortion . makes the solution more accurate One block Five blocks 2-8 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-8 CFX-4.3 V4.3.1H The Power of Multi-Block Reduce cell distortion, makes the solution more accurate. One block Five blocks

AEA TECHNoLoG) The Power of multi-Block Local mesh refinement ■■■■■■ 2-9 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-9 CFX-4.3 V4.3.1H The Power of Multi-Block Local mesh refinement

AEA TECHNoLoG) The Power of multi-Block Complex shape/ structure 2-10 CFX-4.3V4.3.1H CFX-4 Introductory Training(Dec 1999

CFX-4 Introductory Training (Dec 1999) 2-10 CFX-4.3 V4.3.1H The Power of Multi-Block Complex shape / structure