Customer Training Material - PDF document

Customer Training Material Lt11 L ec Post rocessin FLUENT and CFD-Post Introductionto Introduction ANSYS FLUENT ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Postprocessing inFLUENT Postprocessing in ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material FLUENT provides tools to generate data plots of the solution:XY plots of solution variablesHistograms to illustrate frequency of distribution Fast Fourier Transforms (FFT) Other data files (experimental, computational) can also be read in to compare results ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Within ANSYS WorkbenchDrag the CFD-Post icon (Results) in the Component Systems list to the Outside of Workbench: CFD-Post ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Objects in the model User-created Details of current ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Various Viewers (3D, Chart, …) object Postprocessing Customer Training Material When multiple files Comparison fromthe Comparison from generates difference variables and plots k- DifferencePlot ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Locations are created from the menu or from the toolbarOnce created, all Locations appear as entries in the Use the check boxes next Outline treetoquickly Outline tree control visibility Double-click objects in the tree to edit Right-click objects in the ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Elements are either in or outNo cut volumes A volume is formed from all elements touching (or above / below) the selectedlocation selected Can be useful for mesh checkingBased on a variable at, above or below a given value, or between two ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Surface of a variable at a specified Isosurface of pressure behind a flap valve IsoClip Cliptakesacopyofany a one or more criteriaE.g. a outlet boundary plot which is then clipped by Velocity �= 10 [m/s] and Velocity 20 [m/s] geometricvariables ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 geometric Postprocessing Customer Training Material Vortex Core RegionUsed to automatically identify –Best method is case dependent–See documentation for details on the different methods Predefined options for Any line (existing Line, Polyline, Streamline, Particle Track) is rotatedaboutanaxis ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 rotated Postprocessing Customer Training Material Provides a number of additional surface creation options including : reads point data from a text file; usually export this file from a different case: extract a contour level TfdSf ll – T rans S : rotate, trans l ate or sca l : offset an existing surface in eithertheNormaldirectionorbyTranslating either User Surface: From Contour Method(Note: It is generally easier to use Iso Clips instead) ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material add your own labels to the Viewe r –Auto-text allows you to show time step/values, expressions, filenames and datesthatchangeautomatically dates CoordFrame t d fr a m f u l f o r Text Coord Legend Instlip ColorFrame Transform Plane Map setecoodateae,useuo generating plots relative to features in Ld • Create addition legend that are tied to a specific plot (the default legend changes with the active p lot yp) Usually used to re-create full plots from ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010symmetric/periodic solution data Postprocessing Customer Training Material Clip Planeobject in front / behind this plane are hidd hidd Text Coord Legend Instlip ColorFrame Transform Plane Map – Create custom color maps ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training MaterialExpressions Tab tab shows all existing expressions and allows you to create new expressionsRight-click in the top area Enter the new expressions on the Details viewRight-click to view etc. that can be usedtobuildyourexpression used tab to view an XY plot of the expressionMust enter a range for one of the variables and fixed values fortheothers for ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Extract engineering data from the results i express MacroCalculator Macro appear here •Mesh Calculator – Field variables exist for all the metric and ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Tables and Charts can be created to format and present results ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material toolbar icon to create a new tablewill switch over to the 1. Create Table Viewer Tables allow you to display data and expressions in a tabular view Tables are automatically added to the Cells can contain expressions or textBegin with “=“ to distinguishExpressions are evaluated and updatedwhenvariablesand/or 2. Create Text Cells 3. Create Expression Cells updated locations they depend on change 4. Use drop-down menus to assist expression creation ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Cannot reference other cells Postprocessing Customer Training Material Plot a relationship between two variables along a line/curveNeed to create the line first Polyline, Boundary Intersection curve, • Chartsareautomaticallyaddedtothe • Charts ChartPointsarenotnecessarilyevenly Chart Data points usually correspond to where the line/curve intersects a mesh face Multiple lines can be plotted on a single ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Charts can be one of three types: p lots based on linelocators p XY –Transient or SequencePlots an expression (usually Time) versus a variable at a point locator Typically used to show the transient variation of a variable at a point Canbebasedonanylocatorthatcontains multiple data locations –lines, surfaces, planes, domains (but not points)Plots a variable divided into discrete bands on theXAxisversusthefrequencyofoccurrence the X ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training MaterialCharts: Data Series and Axes Each data series corresponds to a location (line, point, etc.) which corresponds to a curve on the chart Add Add new data series ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material FFT can be applied to signals to extract OiilSil O r i g i FFT of Signal Showing ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material Reports included in the report Double-click items to editMesh Reportshows that additional items can be included included •are automatically addedtothereport.Otheritemsthat added report. �Right-click Insert to add new items Can also right-click on each item to ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material To view the report the After making changes to objects contained in the report youwillneedto Refresh you writes out an HTML or Textcopyofthereport Text You have the option can generate 3D Viewer files (see below)forallFigures below) ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material To post-process multiple files simultaneously you can: Oblth Ktldd – O r ena bl e e eep curren t cases l oa d Each file is shown se p aratel in the py Outlinetree and the Viewer Sync cameras AllViewsmovethe – All Views Sync objects The visibility of all is the same ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 Postprocessing Customer Training Material ANSYS –CFD Post can read ANSYS ltfttlit resu f empera ure, ve l oc acceleration, magnetic forces, stress, Locations –.csvfiles which contain point data which defines a polyline orsurface or surface ANSYS Surface Mesh (.cdb): To allow for export of data on a surface for use as a boundary condition in ANSYS Profile Boundary Data: for use in CFX-PreGeneral formatted results data ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010 – ANSYS Load Data: Written onto an imported ANSYS .cdbfile Postprocessing Customer Training Material Session files can be used to quickly reproduce all the actionsperformedinapreviousCFD - Postsession a Session recording in CFX Command Language Excludes actions (e.g. file output) Useful for automating tasks. ANSYS, Inc. Proprietary© 2010 ANSYS, Inc. All rights reserved.December 2010