Model Gallery

The Model Gallery features COMSOL Multiphysics model files from a wide variety of application areas including the electrical, mechanical, fluid, and chemical disciplines. You can download ready-to-use models and step-by-step instructions for building the model, and use these as a starting point for your own modeling work. Use the Quick Search to find models relevant to your area of expertise, and login or create a COMSOL Access account that is associated with a valid COMSOL license to download the model files.

Cross-Flow Heat Exchanger

This model solves the fluid flow and heat transfer in a micro heat exchanger made of stainless steel. These types of heat exchangers are found in lab-on-chip devices in biotechnology and micro reactors, for example for micro fuel cells. The model takes heat transferred through both convection and conduction into account. A square cross-section is used for the fluid channels instead of circular ...

Thermal Modeling of a Microchannel Heat Sink

Thermal management has become a critical aspect of today’s electronic systems, which often include many high-performance circuits that dissipate large amounts of heat. Many of these components require efficient cooling to prevent overheating. Some of these components, such as processors, require a heat sink with cooling fins that are exposed to forced air from a fan. This discussion develops ...

Heated Vertical Plate

This model shows the application of COMSOL Multiphysics in modeling the non-isothermal flow of gases at relatively low flow velocities. Here, a vertical plate is held at a constant temperature, which is higher than that of the surrounding air. When the warm plate heats the air near its surface, the air starts rising upward due to its change in density. The model assumes that the work done ...

Convective Cooling of a Potcore Inductor

The inductor is a common component in a variety of electrical devices. Its applications include power transformation and measurements, and it can also be used together with capacitors to create oscillators. In small devices with many components, such as in laptops, heat generation can be a problem and must be accounted for in the design. This axi-symmetric model studies the heat transfer in ...

Thermoelectric leg

A thermoelectric leg is a fundamental component of a thermoelectric cooler (or heater). For example, a thermocouple is a thermoelectric module typically made of two thermoelectric legs: one made of p-type and of one n-type semiconductor material which are connected in series electrically and in parallel thermally.

Plate Heat Exchanger

The model has its emphasis on heat transport in a very small heat exchanger which is commonly used in the field of Micro Electro Mechanical Systems, MEMS. In this case it might be a reactive processes that needs heating. The heat exchanger itself is constructed by stacking several pleated sheets or plates on top of each other whilst leaving a gap in between. The fluid used to transfer heat ...

Non-Isothermal Flow Around a Cooling Device

This model shows the application of COMSOL Multiphysics in the modeling of non-isothermal laminar flow of fluids (in this case a gas). The model assumes that the expansion work done by the gas is negligible, that the variations in temperature are obtained through external heating, and that the fluid is an ideal gas. The model treats the steady flow of a gas over a fin, which is heated by an ...

Thermal Modeling of a Power Transformer

This model describes the temperature distribution in a coil-shaped power transformer which is cooled by forced flow of transformer oil from the bottom. The properties of the oil varies strongly with temperature, making modeling of the fluid flow in combination with the heat transfer necessary. The results show the position of the "hot spot", and that there is an unexpected radial flow component ...

Parasol

This model illustrate how to model thermal effects of the sun as an external radiative source and considers wavelength-dependent surface emissivities. Two styrofoam coolers are exposed to ambient conditions. A parasol provides shade for one of the coolers for most of the day. The temperature of the beverage cans in the coolers is computed over time.

Thermal Bridges In Building Construction—2D Composite Structure

This example studies heat transfer in a composite two-dimensional structure. Four materials with distinct thermal conductivities k compose the structure. The top and bottom boundaries are facing environments respectively at 0°C and 20°C. The temperature distribution and the heat flux through the structure are compared with published data. This example corresponds to the case 2 described in ...

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