Showing result: 1 - 10 of 54
Heat Transfer
-
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...
Read more about this model -
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...
Read more about this model -
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...
Read more about this model -
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...
Read more about this model -
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...
Read more about this model -
RF-Heated Hot Wall Furnace for Semiconductor Processing
Furnace reactors are used in the fabrication of semiconductor industry to grow layers on the wafers. These can also be used for epitaxial growth, which is a key technology for fabrication of electrical devices. For the wide band gap silicon carbide substance growth takes place in graphite susceptor...
Read more about this model -
Thermo-Mechanical Analysis of a Surface Mounted Resistor
The drive for miniaturizing electronic devices has resulted in today’s extensive use of surface-mount electronic components.
An important aspect in electronics design and the choice of materials is a product’s durability and lifetime.
For surface-mounted resistors and other components prod...
Read more about this model -
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...
Read more about this model -
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...
Read more about this model -
Natural Convection Cooling of a Thermos
The following example solves a free-convection problem in which a thermos holding hot coffee dissipates thermal energy. The main interest is to calculate the thermos’ cooling power, that is, how much heat it loses per unit time.
The example uses General Heat Transfer to solve the heat transfer...
Read more about this model