Mapping Heat Transfer Data to an Abaqus Model via STAR-CCM+

Mapping Heat Transfer Data to an Abaqus Model via STAR-CCM+

In the final section of this tutorial, you will map the heat transfer data obtained from the es-ice simulation to an Abaqus model using the data mapping facilities of STAR-CCM+ v8.02. You will then proceed to import the updated solid model into Abaqus and run a thermal calculation.

To convert the heat transfer data from binary to coded format:

•In pro-STAR, enter the following command to read in the surface mesh and binary-format data:

DBASE, OPEN, intermediate_bnd.dbs DBASE, GET, 1

GETUSERDATA, cycle_avg1.usr, CELL, ALL, BINARY $ $

•Enter the following command to save the data in a coded-format file:

SAVUSERDATA, cycle_avg1_coded.usr, ALL, CODED, ALL

•Close pro-STAR without saving the model file

To import the es-ice CAE model and data:

•Launch STAR-CCM+ in the usual manner and start a new simulation

•From the menu bar, select File > Import > Import CAE Model

•In the Open panel, select intermediate_bnd.dbs and click Open

•In the Import Options panel, accept the default options and click OK as shown in Figure 12-14

Figure 12-14 es-ice CAE model import options

•Rightclick the Imported Model > Dbs: intermediate_bnd node and select

Import CAE Solution Data

•In the Open panel, select cycle_avg1_coded.usr and click Open

•In the Import Data Options panel, set Registers to All(Registers 1-6) and click OK as shown in Figure 12-15

Figure 12-15 es-ice CAE solution data import options

To import the Abaqus CAE model:

•From the menu bar, select File > Import > Import CAE Model

•In the Open panel, select engine.inp and click Open

•In the Import Options panel, accept the default options and click OK as shown in Figure 12-16

Figure 12-16 Abaqus model import options

To map the es-ice heat transfer data to the Abaqus model:

•Right-click the Tools > Data Mappers node and select New Data Mapper >

Surface Data Mapper

•Select the Data Mappers > Surface Data Mapper 1 node and set the properties as follows (see Figure 12-17):

•Source Surfaces: Imported Models > Dbs: intermediate_bnd > unnamed

•Source Stencil: Face

•Scalar Field Functions: Imported Register 1 and Imported Register 2

Figure 12-17 Surface data mapper properties

•Select the Target Specifications > Surface 1 node and set the properties as follows (see Figure 12-18):

•Target Surface: Imported Surfaces > Abaqus: engine > In-Cylinder

•Target Stencil: Face

Figure 12-18 Target specification properties

•Right-click the Data Mappers > Surface Data Mapper 1 node and select

Map Data

To export the mapped data:

•Right-click the Imported Models > Abaqus: engine node and select Export

Mapped Data to External File

•In the Export File panel, set File Name to engine_map.inp

•In the Imported Surface tab (see Figure 12-19), select the Imported Models > Abaqus: engine > In-Cylinder node

Figure 12-19 Export selected surfaces

•In the Field Functions tab (see Figure 12-20), set Export data as to Heat

Transfer Coefficient

•Set Data to export to Mapped Imported Register 1 and Tref to export to

Mapped Imported Register 2

Figure 12-20 Export selected field functions

•Click Save

To import the model with the mapped heat transfer data:

•With a text editor, edit the end of the engine.inp file as shown below:

•Before:

*Output, history *Contact Output

HFLA, HTL, HTLA, SJD, SJDA, SJDT, SJDTA, WEIGHT *Radiation Output

FTEMP, RADFL, RADFLA, RADTL, RADTLA, VFTOT *End Step

•After:

*Output, history *Contact Output

HFLA, HTL, HTLA, SJD, SJDA, SJDT, SJDTA, WEIGHT *Radiation Output

FTEMP, RADFL, RADFLA, RADTL, RADTLA, VFTOT

**

*Include,input=engine_map.inp

**

*End Step

•Save the file as engine_mod.inp

To load the model and mapped heat transfer data into Abaqus:

•Launch Abaqus CAE in the usual manner

•From the menu bar, select File > Import > Model

•In the Import Model panel, select engine_mod.inp and click OK