Coupled Thermal

The Coupled Thermal solution describes the distribution of temperature fields due to losses from electromagnetic solutions or due to applied thermal loads.

Features

  • 3D coupling with several other solution types
  • Transient or Static.
  • Coupling with frequency domain electromagnetic solutions. E.g. for AC heating over time.
  • Temperature dependent material properties.
  • Thermal Coupling - Interface Resistance
  • Outputs Plot
    • Temperature, Temperature Gradient, Temperature Conductive Flux
  • Outputs Table
    • Temperature Maximum, Temperature Minimum

Examples

HV Transformer    
     

Theory and Basics

Formulations

The basis equations:
(1)        (lambda grad T, grad T)Ω
         + Dt (Rho Cp grad T, T)Ω
         -  (0.5 sigma (-Dt a - grad v), T)ΩC   (freq. domain)
         -  (HeatFlux, T)Ωs1
         -  ((ConvCoeff - AmbiTemp), T)Ωs2 
         = 0

lambda: thermal conductivity, Rho: density, Cp: thermal capacitance, sigma: electric conductivity, Heatflux: applied heat, ConvCoeff: thermal convection coefficient, AmbiTemp: ambient temperature.