Introduction to GAMBITAgenda Day 1Agenda Day 2What is GAMBIT?OperationPowerPoint PresentationSlide 7Startup: DEMOJournal FilesRunning Journal FilesJournal File: Parametric ModelingGUIOperation Tool PadsFile Menu (1)File Menu (2)Edit Menu (1)Edit Menu (2)Solver MenuGraphical User InterfaceGlobal Control (1)Global Control (2)Global Control (3)Global (4)Forms (1)Forms (2)Forms (3)Forms (4)Mouse Operations (1)Mouse Operations (2)© Fluent Inc. 01/16/191-1 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comIntroduction to GAMBIT© Fluent Inc. 01/16/191-2 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comAgenda Day 18:00 Introduction + Demo9:15 Tutorial 1: Creating and Meshing Basic Geometry9:45 Creating Geometry in Gambit10:45 Tutorial 2: Geometry Creation Exercises12:00 Lunch1:00 Edge/Face Meshing and Mesh Quality2:00 Tutorial 3: Edge and Face Meshing Exercises2:45 Volume Meshing and the Sizing Function3:45 Tutorial 4: Volume Meshing and Sizing Function Exercises4:30 Volume Decomposition Examples5:00 Break for the Day© Fluent Inc. 01/16/191-3 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comAgenda Day 28:00 Tutorial 5: Volume Decomposition Exercises8:45 Mesh Control through Boundary Layers and Face Vertex Types9:30 Tutorial 6: Vertex Types10:30 CAD/CAE Import and Geometry Cleanup + Demo11:30 Tutorial 7 or 8: Geometry Import Exercise12:00 Lunch1:00 Tutorial 7 or 8: Continued 1:30 Tutorial 9: Hex meshing the Flow Probe3:00 Work on your own Project1:00 Tutorial 7 or 8: Continued 1:30 G/Turbo + Demo3:00 Work on your own Project5:00 Break for the Dayor© Fluent Inc. 01/16/191-4 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comWhat is GAMBIT?A single, integrated preprocessor for CFD analysis:Geometry construction and importUsing ACIS solid modeling capabilitiesUsing STEP, Parasolid, IGES, etc. importCleanup and modification of imported dataMesh generation for all Fluent solvers (including FIDAP and POLYFLOW)Structured and Unstructured hexahedral, tetrahedral, pyramid, and prisms.Mesh quality examinationBoundary zone assignment© Fluent Inc. 01/16/191-5 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comOperationGeneral sequence of operationsInitial setupSolver selection, Mesh size, Defaults, etc.Geometry Creation (ACIS, STEP, Parasolid, IGES or Mesh import)Create full geometryDecompose into mesh-able sectionsMeshingLocal meshing: Edge and Boundary layersGlobal meshing: Face and/or VolumeMesh examinationZone assignmentContinuum and Boundary attachmentMesh export© Fluent Inc. 01/16/191-6 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comFiles (1) GAMBIT directory and filesWhen GAMBIT starts up, it creates a directory called GAMBIT.## = the process numberIt also creates a “lock” file, ident.lok, in the working directoryident.lok prevents any user from starting up another session using the same identifier in the same directory. If the code crashes, this file needs to be manually removed.Three files are created inside this directoryident.dbs =jou =trn =the database. All information will be saved in this file. This file is NOT retrievable upon a crashthe journal file. This file is directly accessible from the Run journal formthe transcript file. Output from GAMBIT© Fluent Inc. 01/16/191-7 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comFiles (2) GAMBIT directory and filesGAMBIT permanently saves these files to your working directory as ident.dbs, ident.jou and ident.trn anytime you issue a “Save” option (equivalent to any standard word processor)Upon Save, earlier versions of ident.dbs and ident.trn will be overwritten, while new commands are appended to the file ident.jou Upon successful exit of GAMBIT:The directory GAMBIT.# is removedThe lock-file ident.lok is deleted© Fluent Inc. 01/16/191-8 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comStartup: DEMOStart gambit with “gambit filename”NT Users must start Gambit this way from a command prompt.Example: Start Gambit in directory “projects”> gambit airfoilBefore saveAfter save© Fluent Inc. 01/16/191-9 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comJournal FilesJournal File:Executable list of Gambit commandsCreated automatically by Gambit from GUI and TUI.Can be edited or created externally with text editor.Journals are small - easy to transfer, e-mail, store Uses:Can be parameterized, comments can be addedEasy recovery from a crash or power lossedit existing commands to create new ones© Fluent Inc. 01/16/191-10 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comRunning Journal FilesJournal files can be processed in two ways:Batch mode (Run)All commands processed without interruption.“read pause” command will force interrupt with resume option appearing.Interactive mode (Edit/Run) Includes text editor for easy modificationsMark lines in process field to activate for processing.Editable text field.Right click text fieldfor more options.Auto or Step throughactivated process lines.© Fluent Inc. 01/16/191-11 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comJournal File: Parametric ModelingParameters (incl. arrays), control-blocks, do-loops, arithmetic functions, etc., can be used in the Journal File for simplifying parametric studies.Comment linesParameter names begin with $Commands are not case sensitive© Fluent Inc. 01/16/191-12 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comGUIMain Menu barGlobal Control Operation toolpadCommand line Description window© Fluent Inc. 01/16/191-13 Introductory GAMBIT Notes GAMBIT v2.0 Jan 2002Fluent User Services Centerwww.fluentusers.comOperation Tool PadsVertexEdgeFace VolumeGroupBoundary