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Heat Transfer
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Cooling and Solidification
In this model, continuous casting processing of a metal rod from melted to solid state is modeled.
The model describes the fluid and solid flow and heat transport, including the phase transfer from melt to solid. This phase change causes momentum changes, latent heat release and a variation in ph...
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Absorbed Radiation (SAR value) in a Human Head
The increasing use of wireless equipment has also increased the amount of radiation energy to which human bodies are exposed. A common property that measures absorbed energy is the SAR value, (specific absorption rate) to determine the amount of radiation that human tissue absorbs.
The human head...
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Shell-and-Tube Heat Exchanger
In this model, you will study a part of a shell-and-tube heat exchanger, where hot water enters from above. The cooling medium flows through the tubes that, in this model, impose a constant temperature at the walls. Furthermore, the tubes are assumed to be made of stainless steel and the heat flux i...
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Boiling Flow
When modeling boiling flows, the mass transfer across the phase boundary, as well as the absorption of latent heat as the liquid evaporates, needs to be accounted for.
Here, a liquid is initially at rest above a thin layer of vapor, where the temperature in both phases is that of the saturation t...
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Heating with a Moving Laser
Lasers are commonly used to achieve precision heating or welding. The beam often moves over the surface of the substrate.
One difficulty with modeling a laser heat source is the fact that the beam is very narrow (nm-mm). Another is that the laser has a certain penetration depth which may be impor...
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Displacement Ventilation of Air in a Room
In general, there are two classes of ventilation: mixing ventilation and displacement ventilation. In displacement ventilation, air enters a room at the floor level and displaces warmer air to achieve the desired temperature. Heating sources in the room can include running electronic devices, or inl...
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Microwave Heating of Cancer Tumor
Electromagnetic heating is ideally suited for modeling in COMSOL Multiphysics. This model shows the area of Hyperthermic Oncology but the modeling issues and techniques are generally applicable to any problem involving electromagnetic heating.
The purpose of this model is to compute the radiation...
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Fluid-Structure Interaction in Aluminum Extrusion
In massive forming processes like rolling or extrusion, metal alloys are deformed in a hot solid state with material flowing under ideally plastic conditions. Such processes can be simulated effectively using computational fluid dynamics, where the material is considered as a fluid with a very high...
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Forced Convection Cooling of Horizontal Circuit Board
In this suite of models, temperature distribution and fluid flow field is modeled with the General Heat Transfer and the Non-Isothermal Flow application modes. By modeling the fluid flow and heat transfer simultaneously the convective transfer is described very accurately. The results are analysed a...
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Joule Heating in High-current Battery Clamps in a Circuit
This model analyzes a car battery-charger circuit where the cables and clamps are modeled using the finite element method. They experience high current that results in Joule heating that in turn affects the conductivity of their materials.
Use of the new SPICE Import interface in COMSOL Multiphy...
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