1. 1 GridShells: integration of CAE systems with GPE Gleb Radchenko South-Ural State University, system programming department

2. 2 Abstract GridShells – is a hierarchy of problem- oriented shells over specific CAE-system. Their functionality implemented using GPE (Grid Programming Environment) architecture (developed in Intel Corp.) on the base of GridBeans conception.

3. 3 CAE-systems architecture Each CAE package is a software complex with complicated technological cycle including such stages: producing mesh physics definition solving the problem analysis, visualization, presenting the results

4. 4 ANSYS CFX CAE-system architecture CFX-Pre (physics definition) CFX-Mesh (mesh producing) CFX-Solver (problem solving) CFX-Solver Manager (task manager) CFX-Post (postprocessor) CAD (geometry definition)

5. 5 CFX-Mesh CAD CFX-PreCFX-SolverCFX-Post

6. 6 CAE-systems complexity Each stage is based on its own subsystem with complicated user and software interface (the description of basic function and classes of ANSYS CFX system takes about 600 pages).

7. 7 Suggested solution Suggested solution: create a classification of the typical CAE problems build the hierarchy of problem-oriented shells (GridShells system) over CAE subsystems each shell encapsulates the process of solving problems of a certain class

8. Shells hierarchy explanation CAE package is on the lowest level of the hierarchy as the basic class of solved problems. The shells on the higher levels of the hierarchy concretize the classes of problems solved by the shells of the previous level, distinguish and encapsulate the groups of common parameters, which may be either constant or strictly limited for such classes of problems. 8

9. 9 Typical problem example A typical problem: 2 tubes with water streams within Parameters of the task: speed of the stream tube radius …

10. 10 The hierarchy of “shells”: Particular problem: simple parameters (unaware users) General problem: any allowed problem (expert users)

11. 11 Distributed nature of the CAE- systems technological cycle Package subsystems produce and consume files User defines his problem on the local computer, sends the definition file to the solver launches the solving process waits for the results and visualizes them on the local mainframe

12. 12 CFX-Post (postprocessor) CFX-Solver (problem solving) CFX-Solver Manager (task manager) CFX-Pre (physics definition) CFX-Mesh (mesh producing) CAD ((geometry definition)

13. 13 Grid-environment approach The solution is realized using GPE (Grid Programming Environment) architecture (developed in Intel Corp.) on the base of GridBeans conception. Use of GridBeans allows using developed algorithms in complicated computing systems (Grid) and clusters.

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15. GridShells benefits Such technology simplifies definition and solving process of specified problems, enables gradual study of CAE package interface and immersion to lower levels of shells hierarchy. One can use BeanShells system as a knowledge base for algorithms and methods of solving specific classes of problems. 15

16. Investigation process In the context of this investigation, there were studied the GPE and GridBeans technology foundations, ANSYS CFX package architecture and problem solving process (the result of this stage of investigation is a user manual “ANSYS CFX architecture and standard problems solving process overview” available at http://cluster.susu.ru/documentaton/cfx_arch/ind ex.htm). We were installed and configured the GPE system. http://cluster.susu.ru/documentaton/cfx_arch/ind ex.htm 16

17. Prototype GridShell over ANSYS CFX In the context of this investigation, there were prepared aprototype of the GridShell system over ANSYS CFX system. 17

18. What’s next? Now, we are working on installation and configuration of the portal solution, at the basis of ANSYS and ANSIS CFX CAE- systems, installed on SUSU cluster “Infinity”.Infinity The next step of the investigation is development and evolution of GridShells hierarchy architecture and creation of GridShells hirearchy prototype. 18