CFDbased shape optimisation using Geodise toolkits Nacelle Optimisation
CFD-based shape optimisation using Geodise toolkits Nacelle Optimisation Problem – problem definition The aim is to understand the effect of various geometry parameters on the aerodynamic performance of engine nacelle, there is no attempt at this stage to calculate the radiated noise from fan, it is simply assumed that the bigger the scarf angle, more reduction in noise will be achieved. Two parameters were first chosen: scarf angle and axial offset Performance is measured using Total Pressure Recovery 0 1 2 Conventional Inlet Negative Scarf Inlet Total Pressure Recovery (TPR) = © Geodise Project, University of Southampton, 2001 -2003. http: //www. geodise. org/
CFD-based shape optimisation using Geodise toolkits OPTIONS Matlab Environment Data Repository CAD MODEL Pro. Engineer Part file (. prt ) Input Parameter file (. inp) Command Script file (. txt) GAMBIT MODEL Gambit Journal file (. jou ) Model Metadata FLUENT MODEL Fluent Journal file (. jou ) Model Metadata Geodise Computation and Database Toolkits. NET Webservice to Condor Globus Middleware © Geodise Project, University of Southampton, 2001 -2003. http: //www. geodise. org/
CFD-based shape optimisation using Geodise toolkits Parametric Geometry generation -. NET Webservice interface to Condor 1. 2. 3. 4. 5. Generate a proxy using user’s credentials; Retrieve the Pro. Engineer Model files from repository; Submit Pro. E job(s) to Condor pool using grid_submit; Poll submitted jobs; Retrieve results © Geodise Project, University of Southampton, 2001 -2003. http: //www. geodise. org/
CFD-based shape optimisation using Geodise toolkits Solving the flow problem on Grid-enabled computing resources 1. 2. 3. 4. 5. Generate a proxy using user’s credentials; Retrieve the Fluent journal file from repository; Submit Fluent jobs to Grid-enabled computing resources; Poll the submitted jobs; Retrieve results © Geodise Project, University of Southampton, 2001 -2003. http: //www. geodise. org/
CFD-based shape optimisation using Geodise toolkits Optimisation using Do. E/RSP methods – workflow and results Do. E using OPTIONS Design of Experiment Axial offset Problem definition Scarf angle Response surface modelling Optimisation on Response surface Validation © Geodise Project, University of Southampton, 2001 -2003. http: //www. geodise. org/
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