ANSYSCFX础训练课程.pptVIP

* * * * * * * * * * * * * * * * * * * * * * * * * * WS2: Flow over an Airfoil WS2-* ANSYS, Inc. Proprietary ? 2009 ANSYS, Inc. All rights reserved. April 28, 2009 Inventory #002599 Workshop Supplement TOC-* ANSYS, Inc. Proprietary ? 2008 ANSYS, Inc. All rights reserved. April 25, 2008 Inventory #002550 Workshop Supplement WS2-* ANSYS, Inc. Proprietary ? 2009 ANSYS, Inc. All rights reserved. April 28, 2009 Inventory #002599 TOC-* ANSYS, Inc. Proprietary ? 2008 ANSYS, Inc. All rights reserved. April 25, 2008 Inventory #002550 Transonic Flow Over a NACA 0012 Airfoil. Introduction to CFX Goals The purpose of this tutorial is to introduce the user to modelling flow in high speed external aerodynamic applications. In this case the flow over a NACA 0012 airfoil at an angle of attach of 1.49° will be simulated and the lift and drag values will be compared to published results. These results were taken with a Reynolds number of 9x106 and a chord length of 1m.* The airfoil is travelling at Mach 0.7 so the simulation will need to account for compressibility as well as turbulence effects. To reduce the computational cost, the mesh will be made up of a 2D slice through the airfoil (one element thick). * NASA TM 81927 Two-Dimensional Aerodynamic Characteristics of the NACA 0012 Airfoil in the Langley 8-Foot Transonic Pressure Tunnel 1981. Harris, C. D. Start a Workbench project Launch Workbench Save the new project as naca0012 in your working directory Drag a Fluid Flow (CFX) module from the Analysis Systems section of the Toolbox onto the Project Schematic In the Project Schematic right-click on the Mesh cell and select Import Mesh File Set the file filter to FLUENT Files and select NACA0012.msh With the mesh file imported the Geometry cell will not be needed so it is removed from the Fluid Flow module. Note that you could have dragged Component System CFX onto the Project Schematic, as in the first workshop. The mesh would then be imported after starting CFX