1. © Geodise Project, University of Southampton, 2001-2003. http://www.geodise.org/ 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 Negative Scarf Inlet Conventional Inlet 0 12 Total Pressure Recovery (TPR) =

2. © Geodise Project, University of Southampton, 2001-2003. http://www.geodise.org/ Globus Middleware Matlab Environment OPTIONS Data Repository FLUENT MODEL Fluent Journal file (.jou ) Model Metadata GAMBIT MODEL Gambit Journal file (.jou ) Model Metadata CAD MODEL ProEngineer Part file (.prt ) Input Parameter file (.inp) Command Script file (.txt) Geodise Computation and Database Toolkits.NET Webservice to Condor CFD-based shape optimisation using Geodise toolkits

3. © Geodise Project, University of Southampton, 2001-2003. http://www.geodise.org/ Parametric Geometry generation -.NET Webservice interface to Condor 1.Generate a proxy using user’s credentials; 2.Retrieve the ProEngineer Model files from repository; 3.Submit ProE job(s) to Condor pool using grid_submit; 4.Poll submitted jobs; 5.Retrieve results CFD-based shape optimisation using Geodise toolkits

4. © Geodise Project, University of Southampton, 2001-2003. http://www.geodise.org/ Solving the flow problem on Grid-enabled computing resources 1.Generate a proxy using user’s credentials; 2.Retrieve the Fluent journal file from repository; 3.Submit Fluent jobs to Grid-enabled computing resources; 4.Poll the submitted jobs; 5.Retrieve results CFD-based shape optimisation using Geodise toolkits

5. © Geodise Project, University of Southampton, 2001-2003. http://www.geodise.org/ Scarf angle Axial offset DoE using OPTIONS CFD-based shape optimisation using Geodise toolkits Optimisation using DoE/RSP methods – workflow and results Problem definition Design of Experiment Response surface modelling Optimisation on Response surface Validation