Solvers

NX SPACE SYSTEMS THERMAL

Solver supports axisymetric solutions: plane is either XZ or XY, and axis is either Z or X

Beam Options

Solver Languages

Solver Properties

UI Name Automation (neutral) Name Value type Range Default Value
Convergence Criteria Steady State - Convergence Criteria integer
Valid Options
Automatic=0
Specify=1
0
Maximum Temperature Change

see note (1)

 Steady State - Maximum Temperature Change double 0.000 to FLT_MAX 0.001
Heat Imbalance

see note (2)

 Steady State - Heat Imbalance boolean true or false true
Heat Imbalance Option

see note (3)

 Heat Imbalance Option integer
Valid Options
Global Fraction=0
Absolute=1
0
Global Fraction

see note (4)

 Global Fraction double 0.000 to FLT_MAX 0.01
Absolute

see note (5)

 Absolute double 0.000 to FLT_MAX 1
Iteration Limit Thermal Steady State - Iteration Limit integer 1 to INT_MAX 10000
Maximum Temperature Change Transient - Maximum Temperature Change double 0.000 to FLT_MAX 0.1
Iteration Limit Thermal Transient - Iteration Limit integer 1 to INT_MAX 10000
Relaxation Factor Relaxation Factor double 0.000 to 1.000 1
Convergence Trace Convergence Trace boolean true or false true
Pressure Convergence Criterion Duct Flow Pressure Convergence Criteria double 0.000 to FLT_MAX 0.01
Iteration Limit Duct Flow Iteration Limit integer 1 to INT_MAX 100
Relaxation Factor Duct Flow Relaxation Factor double 0.000 to 1.000 1
Convergence Trace Duct Flow Convergence Trace boolean true or false true
Convergence Criterion Convergence Criterion double 0.000 to FLT_MAX 1e-008
Iteration Limit Conjugate Gradient Solver Iteration Limit integer 1 to INT_MAX 100
Convergence Matrix Fill Value Convergence Matrix Fill Value integer 0 to INT_MAX 10
Element Discretization Element Discretization integer
Valid Options
Element Center Method=0
Element CG Method=1
CAE_DefaultTmgSpaceElementDiscretization
Shell Accuracy

see note (6)

 Shell Accuracy integer
Valid Options
First Order=0
Second Order=1
CAE_DefaultTmgSpaceElementAccuracy
Solid Element Capacitance Distribution

see note (7)

 Solid Element Capacitance Distribution integer
Valid Options
At CGs=0
At Boundary Elements=1
CAE_DefaultTmgSpaceElementCapacitance
Element Convention for Temperature Constraint

see note (8)

 Element Convention for Temperature Constraint integer
Valid Options
Constrain Temperature at CG only=0
Constrain Temperature at CG and Boundary Elements=1
CAE_DefaultTmgSpaceElementSink
Duct Thermal Discretization Duct Thermal Discretization integer
Valid Options
Advection and No Conduction=0
Advection and Conduction=1
Exponential Advection=2
CAE_DefaultTmgSpaceDuctDiscretization
View Factor Adjustment View Factor Adjustment integer
Valid Options
Self=0
Normalized=1
Residual to Radiative Environment=2
0
Small View Factors Small View Factors integer
Valid Options
Dispose of=0
Dispose up to=1
0
View Factors less than

see note (9)

 View Factors less than double 0.000 to FLT_MAX 1e-012
Sum of Disposed View Factors less than

see note (10)

 Sum of Disposed View Factors less than double 0.000 to FLT_MAX 0.05
Use Radiation Patches Use Radiation Patches boolean true or false true
On Screen Rendering On Screen Rendering boolean true or false true
Ignore specular and transparent effects for radiation request calculations Ignore specular and transparent effects for radiation request calculations boolean true or false false
Allow all elements to shadow for orbital and solar heating requests Allow all elements to shadow for orbital and solar heating requests boolean true or false true
Use Segregated Radiation Solver Use Segregated Radiation Solver boolean true or false true
Element Subdivision Element Subdivision integer
Valid Options
0 (None)=0
1=1
2=2
3=3
4=4
5 (Very Precise)=5
3
Close End of Beams Close End of Beams boolean true or false true
Bands Bands integer
Valid Options
Solar and IR=0
Based on Temperature Range=1
Based on Key Temperatures=2
Equal Power Intervals=3
Wavelength Range=4
Specify Wavelength=5
0
Minimum Black Body Temperature

see note (11)

 Minimum Black Body Temperature double -273.150 to FLT_MAX --
Maximum Black Body Temperature

see note (12)

 Maximum Black Body Temperature double -273.150 to FLT_MAX --
Black Body Temperature Table

see note (13)

 Black Body Temperature Table double array -273.150 to FLT_MAX --
Black Body Temperature

see note (14)

 Black Body Temperature double -273.150 to FLT_MAX --
Total Number of Bands

see note (15)

 Total Number of Bands integer 2to 2 2
Minimum Wavelength

see note (16)

 Minimum Wavelength double 0.000 to FLT_MAX --
Maximum Wavelength

see note (17)

 Maximum Wavelength double 0.000 to FLT_MAX --
Number of Bands in Range

see note (18)

 Number of Bands in Range integer 1to 1 1
Wavelength Breakpoint Table

see note (19)

 Wavelength Breakpoint Table double array 0.000 to FLT_MAX --
Spectral Model

see note (20)

 Spectral Model integer
Valid Options
Full Multi-Bands=0
One Band for IR=1
0
Solar to IR Transition Wavelength Solar to IR Transition Wavelength double 0.000 to 3.000 0.003
Solar Intensity versus Wavelength Solar Intensity versus Wavelength boolean true or false true
Solar Intensity Table

see note (21)

 Solar Intensity Table scalar field wrapper 0.000 to FLT_MAX --

Notes

  1. This property is only valid when parent property "Steady State - Convergence Criteria" has a value of 1
  2. This property is only valid when parent property "Steady State - Convergence Criteria" has a value of 1
  3. This property is only valid when parent property "Steady State - Heat Imbalance" has a value of 1
  4. This property is only valid when parent property "Heat Imbalance Option" has a value of 0
  5. This property is only valid when parent property "Heat Imbalance Option" has a value of 1
  6. This property is only valid when parent property "Element Discretization" has a value of 1
  7. This property is only valid when parent property "Element Discretization" has a value of 1
  8. This property is only valid when parent property "Element Discretization" has a value of 1
  9. This property is only valid when parent property "Small View Factors" has a value of 0
  10. This property is only valid when parent property "Small View Factors" has a value of 1
  11. This property is only valid when parent property "Bands" has a value of 1
  12. This property is only valid when parent property "Bands" has a value of 1
  13. This property is only valid when parent property "Bands" has a value of 2
  14. This property is only valid when parent property "Bands" has a value of 3
  15. This property is only valid when parent property "Bands" has a value of 1
  16. This property is only valid when parent property "Bands" has a value of 4
  17. This property is only valid when parent property "Bands" has a value of 4
  18. This property is only valid when parent property "Bands" has a value of 4
  19. This property is only valid when parent property "Bands" has a value of 5
  20. This property is only valid when parent property "Bands" has a value of 1
  21. This property is only valid when parent property "Solar Intensity versus Wavelength" has a value of 1