Magnetic Field Calculation of Planar SCUs Using ANSYS Maxwell
NSTX Thomson Scattering and NB Analysis Update: Maxwell /ANSYS Generated EM Loads
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Transcript of NSTX Thomson Scattering and NB Analysis Update: Maxwell /ANSYS Generated EM Loads
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NSTX Thomson Scattering and NB Analysis Update: Maxwell/ANSYS Generated EM
Loads12-01-10
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Steady-State Maxwell EM Analysis:PF and TF Coil Loads:
Current Scenario #79 with 10% Headroom
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ANSYS WB Solid Model of Simplified Coil Assembly Exported to Maxwell
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ANSYS WB Solid Model of Simplified Coil Assembly Exported to Maxwell (2)
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Maxwell Solid Model with Vacuum Enclosure
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Maxwell Results: Magnetic Flux Density on Y-Z PlaneCurrent Scenario #79 w/ Headroom
Maxwell and Opera Field Results Agree within 3%
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Maxwell Results: Magnetic Flux Density on Coil SurfacesCurrent Scenario #79 w/ Headroom
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Maxwell Results: Magnetic Flux Density on Coil Surfaces(2)Current Scenario #79 w/ Headroom
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Maxwell Results: Current Density on Coil SurfacesCurrent Scenario #79 w/ Headroom
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ANSYS WB Full Model Mesh
Hex Dominant MeshElement Size = 5 cm# Nodes = 685908# Elements = 131969
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TF Outer Leg OOP Torque and Force, Fixed Ends, No Clevis LoadCurrent Scenario #79 w/ Headroom
TF OOP Torque = 1.271E06 ft-lbfTF OOP Force = 12 x 24,103 lbf = 2.892E05 lbf
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TF Inner Leg OOP Torque, OOP Force/ Flag: Fixed EndsCurrent Scenario #79 w/ Headroom
OOP Torque = 9.99E04 ft-lbfOOP Force/Flag = 9.99E04 ft-lbf/ (1 ft x 36) = 2.775E03 lbf
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Maxwell/ANSYS WB EM Generated Loads: Half Plane TF OOP TorqueCurrent Scenario #79w/ Headroom
Results1/2 Plane OOP Torque
(lbf-ft)
Maxwell/ ANSYS 2.492E+06
Design Spreadsheet 2.853E+06
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Maxwell/ANSYS WB EM Generated Loads: PF1AU Vertical ForceCurrent Scenario #79 w/ Headroom
ResultsPF1AU Vertical Force
(lbf)
Maxwell/ ANSYS 2.324E+04
Design Spreadsheet 2.541E+04
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Maxwell/ANSYS WB EM Generated Loads: PF2U Vertical ForceCurrent Scenario #79 w/ Headroom
ResultsPF2U Vertical Force
(lbf)
Maxwell/ ANSYS -3.073E+04
Design Spreadsheet -3.192E+04
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Maxwell/ANSYS WB EM Generated Loads: PF3U Vertical ForceCurrent Scenario #79 w/ Headroom
ResultsPF3U Vertical Force
(lbf)
Maxwell/ ANSYS 6.394E+03
Design Spreadsheet 6.528E+03
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Maxwell/ANSYS WB EM Generated Loads: PF5U Vertical ForceCurrent Scenario #79 w/ Headroom
ResultsPF5U Vertical Force
(lbf)
Maxwell/ ANSYS -2.496E+05
Design Spreadsheet -2.403E+05
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Transient Maxwell EM Analysis:Vacuum Vessel Disruption Load:
Centered-Plasma Disruption Scenario
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ANSYS WB Solid Model of Simplified Coil and VV Exported to Maxwell
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Maxwell Solid Model with Vacuum Enclosure
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Maxwell Vacuum Vessel Mesh:Required VV Mesh Settings: Element Length = 2.54 cm, Faceting Angle = 1 degree
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Maxwell Results: Eddy Current Density on Vacuum VesselCentered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
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Maxwell Results: Magnetic Flux Density on Vacuum VesselCentered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
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ANSYS DM Solid Model: Vacuum Vessel w/ Port Extensions
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ANSYS WB Static Structural Model: MeshRequired VV Mesh Settings: Automatic Sweep, # Divisions = 5; Mesh Size = 1 cm
Results for ½ Required Mesh Density
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ANSYS Static Structural Results w/o Port Extensions: von Mises StressCentered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
Results for ½ Required Mesh Density
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ANSYS Static Structural Results w/o Port Extensions: von Mises Stress (2)Centered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
Results for ½ Required Mesh Density
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ANSYS Static Structural Results w/o Port Extensions: von Mises Stress (3)Centered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
Results for ½ Required Mesh Density
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ANSYS Static Structural Results w/ Port Extensions: von Mises StressCentered-Plasma Disruption: Current Scenario #79 w/ Headroom Background Field
Results for ½ Required Mesh Density
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Next Steps
• Rerun Analysis with Twice the Mesh Density– Maxwell model is now running, expect ANSYS
results by Friday
• Run Maxwell with Port Extensions included in Eddy Current Solution– Verify that not including Port Extensions in Eddy
Current solution is conservative
• Export Disruption Load to Global Model