MSC.NASTRAN Product Details
Heat Transfer Module

MSC.NASTRAN Heat Transfer capability provides solutions to steady state and transient thermal analysis and design problems. This capability may also be used in combination with the MSC.NASTRAN structural analyses to perform thermal stress analysis.
Solution methods:
Steady state, linear and/or nonlinear Transient, linear and/or nonlinear
Heat conduction:
Temperature-dependent conductivity Temperature-dependent specific heat Anisotropic thermal conductivity Latent heat of phase change Temperature-dependent internal heat generation Weighted temperature gradient dependent internal heat generation Time-dependent internal heat generation
Free convection boundaries:
Temperature-dependent heat transfer coefficient Weighted temperature gradient dependent heat transfer coefficient	Time-dependent heat transfer coefficient Nonlinear functional forms Weighted film temperatures
Forced convection:
Tube fluid flow field relationships H(Re,Pr) Temperature dependent fluid viscosity, conductivity, and specific heat Time-dependent mass flow rate Temperature-dependent mass flow rate Weighted temperature gradient dependent mass flow rate
Radiation to space:
Temperature-dependent emissivity and absorptivity Wavelength dependent emissivity and absorptivity Time dependent exchange
Radiation enclosures:
Temperature-dependent emissivity Wavelength-dependent emissivity User-supplied exchange factors Radiation matrix control Adaptive view factor calculations	Diffuse 3D view factor calculations with self and third-body shadowing Net view factors Multiple radiation enclosures
Applied heat loads:
Directional heat flux Surface normal heat flux Grid point nodal power	Temperature-dependent heat flux Weighted gradient dependent heat flux Time-dependent heat flux
Temperature boundary conditions:
Specified constant temperatures for steady state analysis Specified time-varying temperatures for transient analysis
Initial conditions:
Starting temperatures for nonlinear steady state analysis Starting temperatures for all transient analyses
Thermal control systems:
Local, remote, and time-varying control points for: free convection heat transfer coefficients forced convection mass flow rates heat flux loads internal heat generation rates Transient nonlinear loading functions Perfect conductor algebraic constraint temperature relationship
Output graphical display:
Heat flows for conduction and boundary surface elements Temperature versus time for grid points Enthalpy versus time for grid points Isothermal contour plot
Miscellaneous:
MSC.NASTRAN restart capability Direct matrix input to conduction and heat capacitance matrices Lumped mass and discrete conductor representations