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This example models 3D supersonic flow, including the effect of a shock, in a straight channel with a small obstacle on one of the walls. As the flow hits the obstacle, shock waves are diffracted from the obstacle and walls of the channel. The propagating shock waves form a pattern in ... 詳細を見る

COMSOL Multiphysics は, マウスを数回クリックするだけで, 個々のフェースまたはドメインを簡単にメッシュ化できる対話型メッシュ作成環境を提供します. 各メッシュ作成操作はメッシュ作成シーケンスに追加されます. 最終的なメッシュは, メッシュ作成シーケンスのすべての操作を構築した結果です. この例では, メッシュ作成シーケンスを使用して, 異なる要素タイプで構成されるメッシュを作成する方法を示します. メッシュ操作を追加, 移動, 無効化, 削除する方法と, メッシュ作成シーケンスでサイズ機能を使用してメッシュを制御する方法を学習します. 詳細を見る

A hinge between two mechanical components is modeled by coupling two rigid connectors. This method can be used for simulating many types of mechanisms. In mechanical assemblies, parts are sometimes connected so that they are free to move relative to each other in one or more degrees of ... 詳細を見る

This model shows how to set up a 3D simulation of a n-p-n bipolar transistor. It is a 3D version of the device shown in the Bipolar Transistor model, and demonstrates how to extend semiconductor modeling into 3D using COMSOL Multiphysics. As in the 2D version of this model, the device ... 詳細を見る

This tutorial compares experimental data from the literature with a COMSOL model of a MOSCAP with interface traps (surface states). The Trap-Assisted Surface Recombination feature is used to simulate the effects of the trap charges and the processes of carrier capturing and emitting by ... 詳細を見る

Drying of porous media is an important process in the food and paper industry among others. Many physical effects must be considered: fluid flow, heat transfer with phase change, and transport of participating liquids and gases. All of these effects are strongly coupled, and predefined ... 詳細を見る

This model studies the heat conduction in a thermal bridge made up of an iron bar and an insulation layer that separates a hot internal side from a cold external side. The heat flux between internal and external side and the maximum temperature on the external wall are compared them with ... 詳細を見る

For several high-precision applications, especially in hydraulic systems and fuel injectors, micro bores are needed. In most cases the shape of the injection hole, especially the edge rounding, has a significant influence on the atomization of fluids and therefore on the combustion ... 詳細を見る

Electrical cables, also called transmission lines, are used everywhere in the modern world to transmit both power and data. These cables carry electromagnetic energy, but instead of dealing with the full complexity of the electromagnetic fields, they are more commonly classified ... 詳細を見る

KOH(aq), an alkali metal hydroxide solution, is widely used in anisotropic wet etching technology and is one of the most commonly utilized solutions for micromachining silicon wafers. Anisotropic etching refers to a process where the etching rate varies in different directions, primarily ... 詳細を見る