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CART3D的相关文档.pdf

发布时间：2022-06-16 发布人：admin 分类：说明书 资料大小：11.87M 资料格式：pdf 举报 版权申诉
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    GoCart v1.x & Cart3D Applications of Cart3D Euler Solver in Conceptual Design & User Tutorials OpenVSP Workshop 2014 – Cal Poly Colin  Johnson   johnson@desktopaero.com   August  21,  2014   A division of Aerion Corporation Dream it. Design it. Fly It.
    Agenda •  Introduction –  Desktop Aeronautics •  Overview of Tools –  Cart3D Solver –  GoCart Framework –  Introduction to Documentation –  Comparison to Overflow –  Quick Facts –  Applicability –  Development Roadmap & $100 R&D Budget A division of Aerion Corporation •  Product Introduction & Tutorials –  Overview of GoCart –  Tips and Tricks with OpenVSP v3 –  Deep Dive Tutorials •  Request for feedback
    Desktop Aeronautics •  Who are we? •  What do we do? •  Why are we here? A division of Aerion Corporation
    Background on Cart3D •  Cart3D is a Cartesian Euler CFD code –  Scalable, accurate, and robust solver developed by NASA Ames –  Allows users to perform analysis on arbitrarily complex geometry –  Adjoint Meshing offers solution-based automatic mesh refinement –  Parallelization and multigrid are completely transparent to users –  Powerful tool for conceptual and preliminary aerodynamic design for any geometry •  Common Applications: –  Propulsion-Airframe Integration –  Aircraft Conceptual Design –  Launch Vehicle Analysis –  Sonic Boom Prediction –  Flyback Boosters Effects  of  Jet-­‐Interac0on  on  Pitch  Control  of   a  Launch  Abort  Vehicle.  M.  A=osmis  and  S.   Rogers  AIAA  2008-­‐1281.           Cart3D is a CFD code used industry-wide on a variety of high-speed applications A division of Aerion Corporation
    GoCart: Framework for Analytical Design •  GoCart integrates Cart3D into a user- •  Airbus 12 May 2014 •  GoCart serves as an end-to-end tool friendly analysis framework that gives users easy access to Cart3D’s commands •  Built-in tools allow for convenient ways RAGE Geometry Engine generates geometry that imports to GoCart GoCart’s automated mesh generation tools saves users time Results can be instantly visualized or exported to third party tools Sample CFD analysis of Astrium Space Plane using framework of RAGE and GoCart. Turnaround time: 1 day to able to: Import CAD geometries     Generate computational mesh   Apply propulsion integration   Quickly visualize results •  Commercially available •  Next release of new GoCart (outfitted with Adjoint) set for Fall 2014 GoCart integrates Cart3D and geometry into an intuitive framework for CFD analysis A division of Aerion Corporation 5
    The GoCart Solution $ for change Navier Stokes Solutions Trade Studies with GoCart Conceptual Design Preliminary Design Final Design Value Added •  GoCart’s quick turnaround offers the ability to do trade studies early on •  Perform high-fidelity CFD analysis for conceptual design •  Additional engineering insight offers overall time and money savings Design Phases for requirements validation •  Full Navier-Stokes CFD analyses are commonly performed during Preliminary and Final •  Cost of implementing design changes when product is mature is usually significantly •  more than in during the conceptual phase If quick-turnaround analyses can be done to influence design early on there is potential to save time and money A division of Aerion Corporation
    The GoCart Solution (new graphic?) $ for change Navier Stokes Solutions Trade Studies with GoCart Conceptual Design Preliminary Design Final Design Value Added •  GoCart’s quick turnaround offers the ability to do trade studies early on •  Perform high-fidelity CFD analysis for conceptual design •  Additional engineering insight offers overall time and money savings Design Phases for requirements validation •  Full Navier-Stokes CFD analyses are commonly performed during Preliminary and Final •  Cost of implementing design changes when product is mature is usually significantly •  more than in during the conceptual phase If quick-turnaround analyses can be done to influence design early on there is potential to save time and money A division of Aerion Corporation
    GoCart vs. Overflow Example Business Jet Geometry Overflow CP Contour GoCart CP Contour Time to create mesh? Approximate Mesh Size Run time & cores used? Overflow ~2 weeks GoCart/Cart3D 5 minutes ~250,000 cells 3 hours on 16 CPUs 10 minutes on 4 CPUs GoCart offers significant time savings and has comparable results to Overflow A division of Aerion Corporation
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