アプリケーションギャラリ

この例は, 指定された外部 (周囲) 温度への対流を含む 2D 定常熱解析を示しています. これはベンチマーク例として示されています. 目標位置のベンチマーク結果は 18.25 C です. COMSOL Multiphysics モデルでは, 556 要素のデフォルトメッシュを使用して, 温度は 18.28 C となります. その後, 均一なメッシュ細分化を繰り返していくと, 温度は 18.26 C と18.25 C となり, ベンチマーク結果に収束します. 詳細を見る

This model shows how to model a simple Metal–Insulator–Metal (MIM) diode. The two metal electrodes are defined on each side using the Metal Contact feature. Two studies were performed: one without quantum tunneling across the potential barrier and the other including it, using the WKB ... 詳細を見る

Light collimation or focusing is a basic task often needed when working with lasers in the lab where singlets are used due to their simplicity. If a plano-convex lens is used for the task, there is a correct lens orientation that minimizes aberrations. A useful rule-of-thumb is to ... 詳細を見る

This tutorial simulates the turn-on transient (forward recovery) of a simple PIN diode, based on the book "Fundamentals of Power Semiconductor Devices" by B. J. Baliga (p. 242, 2008 edition). The diode is current driven with a constant ramp rate of 1e9, 2e9 and 1e10 A/cm^2/sec and a ... 詳細を見る

Coplanar waveguide (CPW) bandpass filters can be designed using interdigital capacitors (IDCs) and short-circuited stub inductors (SSIs). This is a very efficient manufacturing method for producing bandpass filters, which can readily be implemented on a GaAs wafer. The Coplanar ... 詳細を見る

This tutorial uses a “black-box” approach to define a battery model based on a small set of lumped parameters, assuming no knowledge of the internal structure or design of the battery electrodes, or choice of materials. The input to the model is the battery capacity, the initial state ... 詳細を見る

A fuel cell unit cell is modeled using the full Butler-Volmer expression for the anodic and cathodic charge transfer reactions. The anodic and cathodic overpotentials depend on the local ionic and electronic potentials, which are obtained from the charge balance equations for ionic and ... 詳細を見る

RFIDs are used in a multitude of applications such as tracking or identifying consumer products and their packaging. An RFID system consists of two main parts: A tag or transponder with a printed circuit-board (PCB) antenna A reader unit with a larger RF antennaThe reader antenna ... 詳細を見る

静磁気問題の例として, 馬蹄形の永久磁石をモデル化する方法を考えてみましょう. 1つの方法は, 磁石全体を強磁性体として扱い, 両端のセクションが異なる反対方向に事前に磁化されていると定義することです. 詳細を見る

Obtaining the steady-state performance is an essential task for the electric motor designer. As with many electromagnetic devices, the steady-state condition of an electric motor is when electric and magnetic field variations have stabilized to periodic variations. That is when ... 詳細を見る