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La Bibliothèque de Modèles présente des modèles construits avec COMSOL Multiphysics pour la simulation d'une très grande variété d'applications, dans les domaines électrique, mécanique, fluidique et chimique. Vous pouvez télécharger ces modèles résolus avec leur documentation détaillée, notamment les instructions de construction pas à pas, et vous en servir comme point de départ de votre travail de simulation. Utilisez l'outil de recherche rapide pour trouver les modèles correspondant à votre domaine d'intérêt, et connectez vous avec votre compte COMSOL Access, associé à une licence COMSOL, afin de télécharger les fichiers modèles.

Sun's Radiation Effect on Two Coolers Placed Under a Parasol

This model illustrates 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.

Radiative Cooling of a Glass Plate

When producing glass, the glass melt is cooled down through radiation to form the final shape, subjecting it to stresses. Numerical treatment of radiative heat transfer, using the Radiative Transfer Equation (RTE), helps to optimize this process. COMSOL Multiphysics provides three discretization methods for modeling radiation in participating media and solving the RTE: the Rosseland ...

Buoyancy Flow in Water

This example studies the stationary state of free convection in a cavity filled with water and bounded by two vertical plates. To generate the buoyancy flow, the plates are heated at different temperatures, bringing the regime close to the transition between laminar and turbulent. To prepare the model, an estimation of the flow regime is performed using the Reynolds, Grashof, Rayleigh and Prandtl ...

Radiative Heat Transfer in a Utility Boiler

This model uses the discrete-ordinates method (DOM) to analyze the radiative heat transfer in a utility boiler with internal obstacles. DOM is one of the most useful radiation models for prediction of radiative heat fluxes on the furnace walls of a combustion chamber. With this model, the behavior of the temperature and heat flux within the furnace and on the heat surfaces can be easily obtained ...

Parameterized Window and Glazing Geometry

During the design of a building, environmental issues have gained considerable influence in the entire project. One of the first concerns is to improve thermal performances. In this process, simulation software are key tools to model thermal losses and performances in the building. The international standard ISO 10077-2:2012 deals with thermal performance of windows, doors and shutters. It ...

Concentric Tube Heat Exchanger

A heat exchanger made of two concentric tubes contains two fluid domains at different temperatures. The Non-Isothermal Flow multiphysics interface is used to model heat transfer in the heat exchanger. This application computes quantities that characterize the heat exchanger such as exchanged power, pressure drop and effectiveness. The pipe structure, fluid properties and boundary conditions are ...

Disk-Stack Heat Sink

This problem follows a typical preliminary board-level thermal analysis. First perform a simulation of the board with some Integrated Circuits (ICs). Then, add a disk-stack heat sink to observe cooling effects. Finally, explore adding a copper layer to the bottom of the board in order to even out the temperature distribution. This exercise highlights a number of useful modeling techniques such ...

Radiative Heat Transfer in Finite Cylindrical Media—P1 Method

This model uses the Discrete-Ordinates method (DOM) to solve a 3D radiative transfer problem in an emitting, absorbing, and linear-anisotropic scattering finite cylindrical medium. Using the S6 quadrature of DOM leads to faster and more accurate results, which are needed in combined modes of heat transfer. The calculated incident radiation and heat fluxes agree well with published results ...

Parameterized Window Geometry

During the design of a building, environmental issues have gained considerable influence in the entire project. One of the first concerns is to improve thermal performances. In this process, simulation software are key tools to model thermal losses and performances in the building. The international standard ISO 10077-2:2012 deals with thermal performance of windows, doors and shutters. It ...

Heat Conduction with a Localized Heat Source on a Disk

This classical verification model solves the steady state temperature distribution in a plan disk heated by a localized heat source at its center. It shows and compare different ways to define a heat source localized on a small domain by representing it either as a geometrical point or a small disk. Both modelings have analytical solutions to which the obtained numerical results can be compared. ...