Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information Section 20 Flux and Convection

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information This tool is used to define a surface heat flux load A positive value indicates that heat flow into the surface Use create button to define varying surface heat flux based on element centroid Flux (Applications | Analysis | Thermal | Flux)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information Flux (Using Field Table) While using table we need XYZ values for each element. 1.Go to Application/FEM 2.Choose Export Nodes/elements 3.Select the faces and click ok 4.XYZ values for each elements in the selected face is stored in text file ( *.CSV)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information 1.XYZ values for each element in the selected face is exported. 2.Element ID is present in the First column and XYZ values are present in the remaining columns. 3.Element ID is not needed in the Field table so delete that column. Flux (Using Field Table)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information Z-axis Y-axis X-axis Flux Value After deleting the Element ID column the XYZ values are present. Enter the Heat Flux value in the Next column. Flux (Using Field Table)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information 1.Click the create option. Field table editor dialog will open. 2. Click the import option and choose the CSV file. XYZ value for each element and Flux value is displayed in the table. Now click ok. 3. Select the faces choose the field table and click apply. Flux is applied in that face. Flux (Using Field Table)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information 1.Now Double click the Flux in the LBC tree. Flux dialog will open. 2.Click the Modify option in the Flux dialog. Field table editor will appear. 3. Click the Plot option and select the contour option. 4. The contour spectrum is displayed on that face. Flux (Using Field Table)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information This tool is used to model heat transfer from surfaces due to convection. Use create button to define Film coefficient and skin temperature based on element centroid / element nodal. Face or body can be selected to define convection on surface Convection (Applications | Analysis | Thermal | Convection)

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information Convection Load 1. Select the faces/body and enter the Film coefficient and skin temperature and click ok. 2. Convection load is applied on the selected faces or faces of selected body.

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information Convection Load (Using Field Table) 1.Click the create option. Field table editor dialog will open. 2.Click the import option and choose the CSV file. XYZ value for element centroid and Film coefficient and Skin temperature value is displayed in the table. Click ok 3. Select the faces. Click Apply.Convection Load will be applied on that face.

Copyright © 2010 Altair Engineering, Inc. All rights reserved.Altair Proprietary and Confidential Information 1.Now Double click the convection in the LBC tree. Convection dialog will open. 2.Click the Modify option in the Convection dialog. Field table editor will appear. 3. Click the Plot option and select the contour option. 4. The contour spectrum is displayed on that face. Convection Load (Using Field Table)