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.