Design And Implementation Of CFD Credibility Analysis Platform Based On OSGi

CFD application is one of the most important technology in Aeronautics andAstronautics. It is a core factor in these areas as the development in computertechnology becomes more sophisticated. However, the uncertainty within the nature ofCFD, for example, heavily depends on user’s skill and knowledge, impedes theapplication of itself in computing aerodynamics engineering. The reliability issue of thesoftware which solves aerodynamics problems is a key to CFD issues. This articlefocuses on the method of reducing the uncertainty in CFD based on its current theoryderived from certainty. The main process of this method is using verification andconfirmation about computing results. To fortify the method, we introduce a frameworkwhich is composed of multiple verification processes, in which we do quantitativeanalysis on the errors and uncertainty found in simulation. The calculation of CFD is inhigher confidence level by this method.This article introduces a platform of credibility analysis based on OSGi. Thetechnology used includes Equinox-the OSGi container, JHotDraw-a2D graphiclibrary, Swixat-a GUI generation tool and JFreeChart-a drawing library. There arethree subsystem in this platform. The first, software integration includes: adding CFDcomputing software, generating flow chart of execution file and output flow chart to aPython file. The second, project management includes: management of configuration ofaircraft’s exterior, grid management, creating calculation and automatic buildingparameter interface. The third, analysis of computation results includes: formattingresult output, generating diagram and graphics for results according to data analysis andcomparing technology upon user’s request.This article discuses the implementation of this platform, including: integration ofsoftware, flow chart generation, output flow chart to python file, management ofconfiguration of exterior, grid management, creating calculation, automatic buildingparameter interface, formatting and generating diagram for results. The feedbacks fromuser are all positive. The platform satisfies user’s requirement of functionality andperformance.