ANSYSCFX2础训练课程3.pptVIP

* * * * * * * * * * * * * * * * * ANSYS, Inc. Proprietary ? 2009 ANSYS, Inc. All rights reserved. Workshop Supplement WS5: Cavitating Centrifugal Pump WS5-* April 28, 2009 Inventory #002599 TOC-* ANSYS, Inc. Proprietary ? 2008 ANSYS, Inc. All rights reserved. April 25, 2008 Inventory #002550 Workshop Supplement ANSYS, Inc. Proprietary ? 2009 ANSYS, Inc. All rights reserved. WS5-* April 28, 2009 Inventory #002599 TOC-* ANSYS, Inc. Proprietary ? 2008 ANSYS, Inc. All rights reserved. April 25, 2008 Inventory #002550 Workshop Cavitating Centrifugal Pump Introduction to CFX Introduction The Purpose of the tutorial is to model cavitation in a centrifugal pump, which involves the use of a rotation domain and the cavitation model. The problem consists of a five blade centrifugal pump operating at 2160 rpm. The working fluid is water and flow is assumed to be steady and incompressible. Due to rotational periodicity a single blade passage will be modeled. The initial flow-field will be solved without cavitation. It will be turned on later. Start Workbench and save the project as centrifugalpump.wbpj Drag CFX into the Project Schematic from the Component Systems toolbox Start CFX-Pre by double clicking Setup When CFX-Pre opens, import the mesh by right-clicking on Mesh and selecting Import Mesh ICEM CFD Browse to pump.cfx5 Keep Mesh units in m Click Open Workbench Modifying the material properties: Expand Materials in the Outline tree Double-click Water On the Material Properties tab change Density to 1000 [kg/m3] Change Dynamic Viscosity to 0.001 [kg m^-1 s^-1] under Transport Properties Click OK Creating Working Fluids Setting up the Fluid Domain Double-click on Default Domain Under Fluid and Particle Definitions, delete Fluid 1 and then create a new Fluid named Water Liquid Set Material to Water Create another new Fluid named Water Vapour Next to the Material drop-down list, click the “…” icon, then the Import Library Data icon (on the right of the form), an