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The process of filling a water balloon is a vivid example for the interaction of fluid pressure and a nonlinear structural material. This model demonstrates how straightforward a FSI simulation model is set up in COMSOL. 詳細を見る

This model illustrates the working principle of a passive electrodynamic bearing. An electrically conducting rotor rotating in a magnetic field produced by a permanent magnets induces eddy currents on the conducting rotor. The eddy currents, in turn, produce a magnetic field that opposes ... 詳細を見る

This simple benchmark model computes the potential and carrier concentrations for a one-dimensional p-n junction using both the finite element and finite volume methods. The results are compared with an equivalent device from the book, "Semiconductor Devices: A Simulation Approach," by ... 詳細を見る

This is a small 2D demonstration model that couples the Linearized Navier-Stokes, Frequency Domain, Solid Mechanics, and Turbulent Flow (k-epsilon) physics interfaces to model the vibrations of a plate located in a 2D viscous parallel plate flow. This type of model is used to model fluid ... 詳細を見る

You can use the Moving Mesh or the Deformed Geometry interface to implement wrapping of a CAD part around one axis. This model demonstrates both how to implement this wrapping, as well as how to subsequently mesh the surrounding volume around the deformed part. A more detailed ... 詳細を見る

This parametrized model can be used to simulate the hopping hoop problem. A rolling ring with a point mass on the perimeter can, under certain conditions, jump up from the surface on which it is rolling. A more detailed description of this model can be found in the blog post "The ... 詳細を見る

The Magnus effect explains the curl that soccer players can give the ball, resulting in the enjoyable goals that we can see in every FIFA World Cup™. This model looks at the Magnus effect in the laminar and turbulent flow regimes for transient and stationary flows. It also discusses ... 詳細を見る

This model shows how to build and solve a radiative heat transfer problem using the Heat Transfer interface. In particular, this 2D model illustrates the use of the surface-to-surface radiation feature. In this model, three surfaces form a cavity. Heat flux is set at two outer ... 詳細を見る

このモデルは, 高レート充電中の角柱型電池の内部温度分布を計算する方法の例を示します. 電気化学は, 熱伝達モデルと結合した集中二電極モデルによって記述されます. 熱伝達モデルには, 集電体および端子におけるジュール熱の影響に加え, ゼリーロールにおける電気化学的加熱 (過電圧による) の寄与も考慮されています. ゼリーロールは, 電池層の構造と寸法を考慮した異方性特性を用いて記述されます. 詳細を見る

Surface micromachined thin films are often subject to residual stress. This COMSOL Multiphysics example describes a thin film resonator with straight or folded cantilever beam springs. The resonance frequencies of the resonator are affected by thermal stress. Using folded springs ... 詳細を見る