论文标题
气泡粒子相互作用的数值建模
Numerical modeling of bubble-particle interaction in a volume-of-fluid framework
论文作者
论文摘要
提出了一种数值方法，以模拟具有气泡粒子相互作用的气体液体固体流，包括粒子碰撞，滑动和附着。使用流体量方法在Eulerian框架中模拟气体流量。粒子运动在拉格朗日框架中预测。用于检测碰撞并确定粒子的滑动或附着的算法。引入了一个有效的气泡来对这些气泡粒子相互作用进行建模。提出的数值方法通过实验案例进行了验证，这些案例需要将单个气泡与粒子上升。将基于气泡直径，颗粒直径和接触角的模型和实验结果进行比较，从模拟获得的碰撞和固定概率进行了比较。提出了气泡附近的粒子轨迹，以显示有和没有提议的气泡粒子相互作用模型的差异。使用此模型观察到碰撞粒子的滑动和附着。
A numerical method is presented to simulate gas-liquid-solid flows with bubble-particle interaction, including particle collision, sliding, and attachment. Gas-liquid flows are simulated in an Eulerian framework using a volume-of-fluid method. Particle motions are predicted in a Lagrangian framework. Algorithms that are used to detect collision and determine the sliding or attachment of the particle are developed. An effective bubble is introduced to model these bubble-particle interaction. The proposed numerical method is validated through experimental cases that entail the rising of a single bubble with particles. Collision and attachment probabilities obtained from the simulation are compared to model and experimental results based on bubble diameters, particle diameters, and contact angles. The particle trajectories near the bubble are presented to show differences with and without the proposed bubble-particle interaction model. The sliding and attachment of the colliding particle are observed using this model.
