Multiphysics couplings
Couplings between two physics interfaces. They appear under Multiphysics in the Model Builder once both interfaces exist.
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Joule Heating in the Model Wizard adds Electric Currents and Heat Transfer in Solids with the coupling below.
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Thermal Stress in the Model Wizard adds Heat Transfer in Solids and Solid Mechanics with the coupling below.
Electromagnetic Heating
Joule heating: resistive losses from Electric Currents act as a heat source in Heat Transfer.
Selection: Domains (all by default) · Home ribbon › Multiphysics
\(Q_e = \mathbf{J}\cdot\mathbf{E}\)
No settings.
Thermal Expansion
Thermal strain from the Heat Transfer temperature field enters Solid Mechanics.
Selection: Domains (all by default) · Home ribbon › Multiphysics
\(\boldsymbol{\epsilon}_{th} = \alpha(T-T_{ref})\mathbf{I}\)
| Setting | Symbol | Unit | Default | Choices / type |
|---|---|---|---|---|
Model Input |
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Coefficient of thermal expansion |
α |
From material |
From material, User defined |
|
alpha |
α |
|
|
Expression |
Strain reference temperature |
T_ref |
|
|
Expression |
Nonisothermal Flow
Convective heat transport by the Laminar Flow velocity, optionally Boussinesq buoyancy.
Selection: Domains (all by default) · Home ribbon › Multiphysics
\(\rho C_p\mathbf{u}\cdot\nabla T,\quad \mathbf{F} = -\rho\alpha(T-T_{ref})\mathbf{g}\)
| Setting | Symbol | Unit | Default | Choices / type |
|---|---|---|---|---|
Buoyancy |
||||
Include buoyancy (Boussinesq) |
Off |
Check box |
||
Coefficient of thermal expansion |
α |
From material |
From material, User defined |
|
alpha |
α |
|
|
Expression |
Reference temperature |
T_ref |
|
|
Expression |