2008 ANSYS, Inc. All rights reserved.1ANSYS, Inc. ProprietaryAnsoft/ANSYS Thermal Coupling Examples 2008 ANSYS, Inc. All rights reserved.2ANSYS, Inc. ProprietaryAgenda One-way Load Transfer Overview Applications General Procedure HFSS Example Maxwell Example Conclusions 2008 ANSYS, Inc. All rights reserved.3ANSYS, Inc. ProprietaryOne-way Load Transfer 2008 ANSYS, Inc. All rights reserved.4ANSYS, Inc. ProprietaryOne-way Load Transfer One-way Data Exchange Volumetric or surface losses mapped to ANSYS modelVolumetric LossesBus Bar Model Ansoft MaxwellTemperatures ANSYS Mechanical 2008 ANSYS, Inc. All rights reserved.5ANSYS, Inc. ProprietaryTypes of Coupled Problems Electromagnetic-Thermal Coupling Maxwell Volumetric losses HFSS Volumetric and/or surface losses Electromagnetic-Structural Interaction Maxwell Volumetric force density (under concept validation work) 2008 ANSYS, Inc. All rights reserved.6ANSYS, Inc. ProprietaryApplications for Coupling with Electromagnetics Electric Machines Motors, generators, solenoids, etc. Power Distribution Bus bars, power switching gear, transformers RF and Microwave Components High-power connectors, terminations, couplers, filters, circulators, etc. IC Thermal Distribution Advanced Packaging, BGAs, Wire Bonds PCB Thermal Distribution and Dissipation Biomedical SAR, MRI Machines, RF Ablation 2008 ANSYS, Inc. All rights reserved.7ANSYS, Inc. ProprietaryLimitations One-way Load Transfer Does not allow for temperature dependent electromagnetic material properties Not applicable for certain multiphysics problems Induction heating 2008 ANSYS, Inc. All rights reserved.8ANSYS, Inc. ProprietaryGeneral Procedure 2008 ANSYS, Inc. All rights reserved.9ANSYS, Inc. ProprietaryAnsoft/ANSYS Coupling General ProcedureCreate and solve the electromagnetic application (HFSS / Maxwell)Export geometry from Ansoft to ANSYSCreate the corresponding ANSYS thermal model Including the meshExport (to file A) the ANSYS finite element mesh centroid (X, Y, Z) coordinates for all heat source objects (volumes and surfaces)Read in file A and map the applicable electromagnetic heat source densities into output file BRead in File B, solve thermal problem, post process the resultsStartEnd 2008 ANSYS, Inc. All rights reserved.10ANSYS, Inc. ProprietaryHFSS Example 2008 ANSYS, Inc. All rights reserved.11ANSYS, Inc. ProprietaryHFSS One-way Coupling Example Cell Phone Antenna 350 mW at 900 MHz Objective to calculate temperature rise in brainVolumetric LossesElectric Field Ansoft HFSSTemperature ANSYS Mechanical 2008 ANSYS, Inc. All rights reserved.12ANSYS, Inc. ProprietaryHFSS SolutionAnalyze HFSS Setup 2008 ANSYS, Inc. All rights reserved.13ANSYS, Inc. ProprietaryExport Geometry from HFSSAny geometry export option supported.Export geometry in desired format: Modeler / ExportFile name 2008 ANSYS, Inc. All rights reserved.14ANSYS, Inc. ProprietaryImport Geometry into DesignModelerCan modify or defeature geometry as necessary in DM. 2008 ANSYS, Inc. All rights reserved.15ANSYS, Inc. ProprietaryANSYS Thermal MeshThermal mesh is independent of HFSS mesh.Thermal contact can be used. Any thermal element type can be used. 2008 ANSYS, Inc. All rights reserved.16ANSYS, Inc. ProprietaryExport Mesh from ANSYSExport element centroid locations for each part for volumetric loss interpolation. 2008 ANSYS, Inc. All rights reserved.17ANSYS, Inc. ProprietaryImport ANSYS Mesh into HFSS and Export LossesImport ANSYS element centroid locations into HFSS.Interpolated volumetric losses to ANSYS mesh locations. 2008 ANSYS, Inc. All rights reserved.18ANSYS, Inc. ProprietaryAPDL to Import LossesCommand object to read volumetric losses from HFSS and convert into ANSYS BFE commands.Parameter to apply total integrated power from HFSS for load consistency. 2008 ANSYS, Inc. All rights reserved.19ANSYS, Inc. ProprietaryThermal Boundary ConditionsApply other thermal boundary conditions to ANSYS model. 2008 ANSYS, Inc. All rights reserved.20ANSYS, Inc. ProprietaryThermal SolutionRun and postprocess thermal solution. 2008 ANSYS, Inc. All rights reserved.21ANSYS, Inc. ProprietaryMaxwell Example 2008 ANSYS, Inc. All rights reserved.22ANSYS, Inc. ProprietaryMaxwell One-way Coupling Example Solenoid Coil losses transferred to thermal modelVolumetric LossesMagnetic Field Ansoft MaxwellTemperature ANSYS Mechanical 2008 ANSYS, Inc. All rights reserved.23ANSYS, Inc. ProprietaryMaxwell SolutionAnalyze Maxwell Design 2008 ANSYS, Inc. All rights reserved.24ANSYS, Inc. ProprietaryExport Geometry from MaxwellAny geometry export option supported.File name 2008 ANSYS, Inc. All rights reserved.25ANSYS, Inc. ProprietaryImport Geometry into DesignModelerCan modify or defeature geometry as necessary in DM. 2008 ANSYS, Inc. All rights reserved.26ANSYS, Inc. ProprietaryANSYS Thermal MeshThermal mesh