2014 Overset Grid Symposium Tutorials

You can now download the tutorial schedule in PDF format (45K).

The following tutorials on various overset tools and solvers are confirmed for Monday, October 6. Additional tutorials are planned. The schedule will be updated the week of August 11. We are scheduling to minimize overlaps between tutorials that will interest the same group. Visit this page again soon!

Introduction to Overset Mesh with STAR-CCM+
Nolan Halliday (CD-Adapco)

Synopsis: iThis tutorial will introduce the overset mesh capabilities in CD-adapco’s STAR-CCM+ software. Participants will learn how to perform the entire CFD analysis process - including CAD preparation, meshing, solving, and post-processing – within STAR-CCM+. Because it is implemented in a widely used commercial package, STAR-CCM+’s overset mesh is compatible from incompressible to hypersonic flow regimes, and with various multiphase models like VOF, Lagrangian multiphase, and liquid films. Benefits of the unique overset capabilities, which include arbitrary unstructured mesh topologies and completely automatic hole-cutting and grid assembly, will be shown via step-by-step instructions on relevant cases.

Overset and Mesh Morphing Capabilities in CFD++: Multiple Physics, Multiple Applications, One Solver
Prasanth Kachgal (Metacomp Technologies)

Synopsis: CFD++ is a powerful, general purpose CFD solver that is capable of solving complex flow problems with a high degree of accuracy, robustness, and efficiency. During this session, we will focus on showcasing the overset and mesh morphing features in CFD++ through the step-by-step setup and computation of three illustrative problems:

Fin deployment: In this case, overset and six-degree of freedom motion are demonstrated for a mulitple body problem.
Space capsule dropping into a body of water: Here, overset and six-DOF are solved in conjunction with the volume-of-fluid multi-phase model.
Solid rocket: Overset and mesh morphing capabilities are combined to simulate the depletion of solid rocket fuel.

By the end of this session, the audience should have insight into the versatility of the CFD++ solver, in particular with overset mesh and related applications, while also getting a feel for its ease-of-use.

Tecplot 360 EX and Chorus DE Tutorial and Discussion
Scott Imlay and Durrell Rittenberg (Tecplot Inc.)

Synopsis: The Tecplot Tutorial will give an introduction to visualization and analysis of CFD datasets using Tecplot 360 EX and Tecplot Chorus DE. The tutorial will cover:

Overview of Tecplot 360 EX and Tecplot Chorus DE
Tecplot 360 data models – advantages of subzone loadable file formats (SZL)
Common workflows
Automation
Tips and tricks
Discussion

A Chimera Grid Tools Tutorial
William M. Chan and Shishir Pandya (NASA Ames Research Center)

Synopsis: A brief overview of the capabilities of Chimera Grid Tools (CGT) will be given. These include pre-processing tools for geometry/grid manipulation and generation, flow solver input preparation, and various post-processing tools for aerodynamic loads computation, convergence analysis, and solution visualization. A step-by-step demonstration will be presented on how to create a pre-processing script using OVERGRID and the CGT Script Library from typical geometry inputs. The pre-processing script will cover parameterized grid generation steps, and inputs preparation for domain connectivity, flow solver, and aerodynamic loads computation. Finally, a short demonstration will be given on the line loads computation tool TRILOAD.

Introduction to SUGGAR++: Capabilities and Usage
Ralph Noack (Celeritas Simulation Technology, LLC)

Synopsis: An overview of the capabilities of Suggar++ will be given along with a brief introduction to the inputs and usage.

Integrated Overset Meshing and Assembly with Pointwise
Nick Wyman (Pointwise)

Synopsis:The hybrid mesh generator Pointwise, has been integrated with third-party overset assembly software to provide a unified environment for overset meshing. A tutorial will be provided for structured and unstructured overset mesh generation, assembly, and visualization.

OVERFLOW Tutorial and Discussion
Pieter Buning (NASA Langley Research Center)

Synopsis: This will provide a summary and tutorial of recent features added to the OVERFLOW flow solver, a description of how to request the code from NASA, and a question-and-answer period.

An Overture Tutorial
Bill Henshaw (Rensselaer Polytechnic Institute)

Synopsis: The Overture tutorial will give a introduction to constructing grids and solving partial differential equations using Overture. The tutorial will cover

solving an advection-diffusion equation using the high-level C++ interface (one of the Overture primer examples),
creating mappings (component grids) with Overture geometry tools and constructing overlapping grids with Ogen,
solving incompressible flows with Cgins (including moving grids),
solving compressible flows with Cgcns (including the use of adaptive mesh refinement),
solving solid mechanics problems with Cgsm,
solving electromagnetic problems with Cgmx,
solving fluid structure interaction (FSI) problems with Cgmp.

Overture is available free for download at www.overtureFramework.org.

Advanced FieldView workflows: Post-Processing OVERFLOW 2 datasets for the High Lift Prediction Workshop 2 via FVX and XDBs Dr. Earl P.N. Duque (Manager of the Applied Research Group, Intelligent Light, Rutherford, NJ)

Simulations using the OVERFLOW2 code in support of the High Lift Prediction Workshop 2 were performed on a remote Cray XE6 system. The large volumes of data in these cases were stored on the remote system where FieldView Parallel was used in batch and interactive modes to interrogate the data; all from a laptop across standard cable modems. An extract workflow was applied to create FieldView surface extract databases (XDBs), line extracts, and streamlines, reducing the data by a factor of 275-1000 and the Cray XE6 and local resources automatically generated comparisons between the cases and against experimental data. This tutorial will demonstrate how FieldView, FVX, XDB workflows and GnuPLOT were used to automate the post-processing of large scale simulations.

Please direct any questions to Prof. Marilyn Smith

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