Heat

NISA/Heat is a general purpose finite element program to analyze a wide spectrum of problems encountered in heat transfer.

 

ANALYSIS FEATURES

  • Linear and nonlinear 
    • Nonlinearity due to material properties and/or boundary conditions, such as temperature-dependent thermal conductivity and phase change (melting and freezing)
  • Steady state and transient
  • Time integration techniques (forward difference, trapezoidal, backward difference)
  • Constant or variable time step conditions
  • Loading and boundary conditions may be time- and/or temperature-dependent
  • Radiation effects with view factor calculation
  • Restarts
  • Automatic submodeling in user-defined regions for more accurate stress calculations


MATERIAL PROPERTIES

  • Isotropic and orthotropic
  • Time- and/or temperature-dependent


LOADING

  • Concentrated heat flows
  • Distributed heat flux
  • Internal heat generation, node or element


BOUNDARY CONDITIONS

  • Specified nodal temperature
  • Coupled temperatures
  • Convection and Radiation


NONLINEAR CAPABILITIES

  • Temperature-dependent material properties
  • Time- and temperature-dependent boundary conditions
    • Convection
    • Radiation
  • Phase changes (melting and freezing)
  • Surface radiation with view factor calculation


OUTPUT

  • Nodal temperature time history
  • Temperature gradients in shells
  • Temperature distribution at specified time step
  • Nodal heat values
 
PM Mechanical Engineering AB |  Peter.marton@pm-mechanical-engineering.com | +46 708899359