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This example demonstrates how to model phase transition by a moving boundary interface according to the Stefan problem. A square cavity containing both solid and liquid tin is submitted to a temperature difference between left and right boundaries. Fluid and solid parts are solved in ... 詳細を見る

An important step in brewing beer is the fermentation process. Here, alcohol is formed together with various flavor substances from sugars in the presence of yeast. The initial sugar content, temperature, and yeast type dictate how the fermentation proceeds. In this example, the ... 詳細を見る

ヒートパイプは, 作動流体の気化, 物質移動, 凝縮を通じて熱を効率的に伝達するように設計されています. ヒートパイプは, 電子機器の冷却など, 熱制御が重要となるさまざまな用途で使用されています. ヒートパイプ内部では, 高温側と低温側の温度差と蒸気圧の温度依存性により, 蒸気室全体に圧力差が生じます. この圧力差により, 蒸気は高温側から低温側へと移動します. 高温側では, 蒸発が蒸気-ウィック界面でヒートシンクとして機能し, 逆に低温側では凝縮が熱源として機能します. このモデルは, ... 詳細を見る

Corrosion induced due to alternating current (AC) is evident in the oil and gas industry, particularly when a pipeline is in close proximity to the high power transmission lines. A numerical model presented here first evaluates the effect of direct current (DC) applied potential on ... 詳細を見る

This tutorial shows how to model a slot die coating process with a power-law non-Newtonian fluid in one of the two phases. The model uses a two-phase flow phase-field method. 詳細を見る

This model shows how to use simulations to predict power numbers with Power Law fluids in a mixer. It simulates the behavior of flow in a flat bottom tank with a single four-blade pitched impeller. The flow was modeled as laminar and the frozen rotor approach was used to solve the ... 詳細を見る

この例では, 水で満たされた貯水池の上に置かれた細い垂直シリンダーを調べます. 空気と水の界面の壁面接着と表面張力により, 水は流路を通って上昇します. 表面張力と壁面接着力は, MEMS デバイスのマイクロ流路を通じて流体を輸送したり, マイクロピペットを使用して少量の流体を測定, 輸送, 配置したりするためによく使用されます. 多孔質媒体を通る多相流や固体壁上の液滴も, 壁面接着力と表面張力が流れのダイナミクスに強く影響する例です. 壁面の接着力を正しくモデル化するには, 境界条件の扱いが重要です. 壁面の速度をゼロに固定すると, ... 詳細を見る

In a cooling system, a microelectronic component has been identified as the critical link. Since the power is repeatedly switched on and off, the component is subjected to thermal cycling. As a results a crack grows through a solder joint and disconnects the chip from the printed circuit ... 詳細を見る

This model exemplifies how the rate of steel corrosion in an oil platform increases over time due to build-up of a resistive film on the sacrificial anodes, formed by reaction products. The model also includes secondary current distribution electrode kinetics on the protected steel ... 詳細を見る

This model couples the Navier Stokes equations and the heat transfer equations to examine density driven flow of free fluids. Here the fluid is in a square cavity with a heated wall. The buoyancy force is a Boussinesq term added to the Navier-Stokes equations. The equation is ... 詳細を見る