PhilGadsby
Aerospace
- Dec 5, 2013
- 1
Hi,
I am trying to link an eddy current and heat transfer analysis to solve an induction heating problem in Abaqus.
When i try and run the co simulation, i get the error " ***ERROR: AN ELSET NAME IS EXPECTED ON THE *CO-SIMULATION REGION OPTION." in both!
As you can see from the input files i have specified an element set which is common (although not in name but surely that doesn't matter) to both analyses. This element set is the geometry of a tube which is being heated by the induction coil. In the eddy current analysis, the model includes the tube, induction coil and surrounding air. The heat transfer model only contains the tube, generated by removing the mesh from everything but the tube from the eddy current model, writing an input file and using this to import the geometry into the heat transfer model. In this way the mesh for both analyses should be the same.
If anyone has any examples of co simulation input files or could shed some light on the procedure? There really isn't much in the way to go on either online or in the documentation.
Thanks,
Phil.
Eddy Current Analysis .inp:
...
*System
*Elset, elset=CoSimSet
15201, 15202, 15203, 15204, 15205, 15206, 15207, 15208, 15209, 15210, 15211, 15212, 15213, 15214, 15215, 15216
15217, 15218, 15219, 15220, 15221, 15222, 15223, 15224, 15225, 15226, 15227, 15228, 15229, 15230, 15231, 15232
15233, 15234, 15235, 15236, 15237, 15238, 15239, 15240, 15241, 15242, 15243, 15244, 15245, 15246, 15247, 15248
15249, 15250, 15251, 15252, 15253, 15254, 15255, 15256, 15257, 15258, 15259, 15260, 15261, 15262, 15263, 15264
15265, 15266, 15267, 15268, 15269, 15270, 15271, 15272, 15273, 15274, 15275, 15276, 15277, 15278, 15279, 15280
15281, 15282, 15283, 15284, 15285
...
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=NO, perturbation
*Electromagnetic, low frequency, time harmonic
284000, 284000, 20,
**
** BOUNDARY CONDITIONS
**
** Name: BC-1 Type: Magnetic vector potential
*D EM Potential
"Far Field", s, mvp, Tube-CylCSYS, 0., 0., 0., 0., 0., 0., 0., 0.
** Name: BC-2 Type: Magnetic vector potential
*D EM Potential
Tube_symm-r, s, mvp, , 0., 0., 0., 0., 0., 0., 0., 0.
** Name: BC-3 Type: Magnetic vector potential
*D EM Potential
Tube_symm-theta, s, mvp, , 0., 0., 0., 0., 0., 0., 0., 0.
**
** LOADS
**
** Name: Load-1 Type: Body current density
*Decurrent, real
Tube_CoilSet, CJ, 9833657, 0., 1., 0., Tube-CylCSYS
**
** INTERACTIONS
**
**Interaction: Int-1
*Co-Simulation, name=Int-1, controls=Int-1-cntrls, program=MULTIPHYSICS
*Co-Simulation Region, export, type=volume
[highlight #EF2929]CoSimSet[/highlight], EMJH
*Co-Simulation Region, import, type=volume
[highlight #EF2929]CoSimSet[/highlight], TEMP
*Co-Simulation Controls, name=Int-1-cntrls, coupling scheme=gauss-seidel, time incrementation=lockstep, time marks=yes, step size=import, scheme modifier=lead
**
** OUTPUT REQUESTS
**
**
** FIELD OUTPUT: F-Output-1
**
*Output, field
*Element Output, directions=YES
EMB, EMCD, EME, EMH, EMJH
*Output, history, frequency=0
*End Step
Thermal Analyis .inp
...
*Elset, elset=PART-1-1_TUBE_TUBE, generate
1, 35280, 1
** Section: Section-1-TUBE_TUBE
*Solid Section, elset=PART-1-1_TUBE_TUBE, material=SS316
...
**
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=NO
*Heat Transfer, end=SS, deltmx=200.
0.1, 1., 1e-05, 1., 1.
**
** INTERACTIONS
**
** Interaction: ForcedConvection
*Cfilm
"Tube Inner Surface", 1., 444., 1600.
** Interaction: InsulatedEnds
*Cfilm
"Tube Ends", 1., 295., 0.
** Interaction: NaturalConvection
*Cfilm
"Tube Outer Surface", 1., 295., 13.94
** Interaction: Radiation
*Cradiate
"Tube Outer Surface", 1., 295., 0.8
**Interaction: CoSimulation
*Co-Simulation, name=CoSim, controls=CoSimControls, program=MULTIPHYSICS
*Co-Simulation Region, import, type=VOLUME
PART-1-1_TUBE_TUBE, CFL
*Co-Simulation Region, export, type=VOLUME
PART-1-1_TUBE_TUBE, NT
*Co-Simulation Controls, name=CoSimControls, coupling scheme=gauss-seidel, time incrementation=lockstep, time marks=yes, step size=export, scheme modifier=lag
**
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-1
**
*Output, field, variable=PRESELECT
*Output, history, frequency=0
*End Step
I am trying to link an eddy current and heat transfer analysis to solve an induction heating problem in Abaqus.
When i try and run the co simulation, i get the error " ***ERROR: AN ELSET NAME IS EXPECTED ON THE *CO-SIMULATION REGION OPTION." in both!
As you can see from the input files i have specified an element set which is common (although not in name but surely that doesn't matter) to both analyses. This element set is the geometry of a tube which is being heated by the induction coil. In the eddy current analysis, the model includes the tube, induction coil and surrounding air. The heat transfer model only contains the tube, generated by removing the mesh from everything but the tube from the eddy current model, writing an input file and using this to import the geometry into the heat transfer model. In this way the mesh for both analyses should be the same.
If anyone has any examples of co simulation input files or could shed some light on the procedure? There really isn't much in the way to go on either online or in the documentation.
Thanks,
Phil.
Eddy Current Analysis .inp:
...
*System
*Elset, elset=CoSimSet
15201, 15202, 15203, 15204, 15205, 15206, 15207, 15208, 15209, 15210, 15211, 15212, 15213, 15214, 15215, 15216
15217, 15218, 15219, 15220, 15221, 15222, 15223, 15224, 15225, 15226, 15227, 15228, 15229, 15230, 15231, 15232
15233, 15234, 15235, 15236, 15237, 15238, 15239, 15240, 15241, 15242, 15243, 15244, 15245, 15246, 15247, 15248
15249, 15250, 15251, 15252, 15253, 15254, 15255, 15256, 15257, 15258, 15259, 15260, 15261, 15262, 15263, 15264
15265, 15266, 15267, 15268, 15269, 15270, 15271, 15272, 15273, 15274, 15275, 15276, 15277, 15278, 15279, 15280
15281, 15282, 15283, 15284, 15285
...
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=NO, perturbation
*Electromagnetic, low frequency, time harmonic
284000, 284000, 20,
**
** BOUNDARY CONDITIONS
**
** Name: BC-1 Type: Magnetic vector potential
*D EM Potential
"Far Field", s, mvp, Tube-CylCSYS, 0., 0., 0., 0., 0., 0., 0., 0.
** Name: BC-2 Type: Magnetic vector potential
*D EM Potential
Tube_symm-r, s, mvp, , 0., 0., 0., 0., 0., 0., 0., 0.
** Name: BC-3 Type: Magnetic vector potential
*D EM Potential
Tube_symm-theta, s, mvp, , 0., 0., 0., 0., 0., 0., 0., 0.
**
** LOADS
**
** Name: Load-1 Type: Body current density
*Decurrent, real
Tube_CoilSet, CJ, 9833657, 0., 1., 0., Tube-CylCSYS
**
** INTERACTIONS
**
**Interaction: Int-1
*Co-Simulation, name=Int-1, controls=Int-1-cntrls, program=MULTIPHYSICS
*Co-Simulation Region, export, type=volume
[highlight #EF2929]CoSimSet[/highlight], EMJH
*Co-Simulation Region, import, type=volume
[highlight #EF2929]CoSimSet[/highlight], TEMP
*Co-Simulation Controls, name=Int-1-cntrls, coupling scheme=gauss-seidel, time incrementation=lockstep, time marks=yes, step size=import, scheme modifier=lead
**
** OUTPUT REQUESTS
**
**
** FIELD OUTPUT: F-Output-1
**
*Output, field
*Element Output, directions=YES
EMB, EMCD, EME, EMH, EMJH
*Output, history, frequency=0
*End Step
Thermal Analyis .inp
...
*Elset, elset=PART-1-1_TUBE_TUBE, generate
1, 35280, 1
** Section: Section-1-TUBE_TUBE
*Solid Section, elset=PART-1-1_TUBE_TUBE, material=SS316
...
**
** STEP: Step-1
**
*Step, name=Step-1, nlgeom=NO
*Heat Transfer, end=SS, deltmx=200.
0.1, 1., 1e-05, 1., 1.
**
** INTERACTIONS
**
** Interaction: ForcedConvection
*Cfilm
"Tube Inner Surface", 1., 444., 1600.
** Interaction: InsulatedEnds
*Cfilm
"Tube Ends", 1., 295., 0.
** Interaction: NaturalConvection
*Cfilm
"Tube Outer Surface", 1., 295., 13.94
** Interaction: Radiation
*Cradiate
"Tube Outer Surface", 1., 295., 0.8
**Interaction: CoSimulation
*Co-Simulation, name=CoSim, controls=CoSimControls, program=MULTIPHYSICS
*Co-Simulation Region, import, type=VOLUME
PART-1-1_TUBE_TUBE, CFL
*Co-Simulation Region, export, type=VOLUME
PART-1-1_TUBE_TUBE, NT
*Co-Simulation Controls, name=CoSimControls, coupling scheme=gauss-seidel, time incrementation=lockstep, time marks=yes, step size=export, scheme modifier=lag
**
** OUTPUT REQUESTS
**
*Restart, write, frequency=0
**
** FIELD OUTPUT: F-Output-1
**
*Output, field, variable=PRESELECT
*Output, history, frequency=0
*End Step
