A5057382406- Fluid Dynamics and Heat Transfer
- Enhanced Oil Recovery Techniques
- Surface Modification and Superhydrophobicity
- Fluid Dynamics Simulations and Interactions
- Minerals Flotation and Separation Techniques
- Fluid Dynamics and Mixing
- Pickering emulsions and particle stabilization
- Electrohydrodynamics and Fluid Dynamics
China University of Petroleum, East China
2022-2023
An in-depth analysis of the kinetics collision between freely rising oil droplets in water range Re = 4.64–463.3 was carried out to understand physical mechanism and detailed interaction wall. The results show that when with ≥ 27.8 hit wall vertically at terminal velocities, a “dimple-like” film is formed near wall, which significantly affects pressure distribution within film, oil–water interfacial shear force, forces on droplet. A coupled model describing thickness accurately captures...
To investigate the force model and motion law of oil droplets in water near wetted wall, with R1 = 0.29–0.62 mm films R2 1–6 are solved numerically. In addition to buoyancy, flow resistance, added mass force, film-induced triggered by wall constraint is also introduced into model. The drainage process described using Stokes–Reynolds equation, Young–Laplace equation used calculate pressure within film. results show that can be coupled Stokes–Reynolds–Young–Laplace better describe dynamics...
Abstract Dynamics analysis of the oil droplet in water impacting on a rigid wall range Re=9.3 ∼ 231.39, We=0.003 0.637 was carried out by combining microscopic experiment with theoretical study. In droplet’s force equation, we consider added mass and film induced force, addition to conventional forces, i.e. buoyancy resistance flow. Stokes-Reynolds drainage equation (i.e. SR model) Young-Laplace YL are combined numerically solve motion law droplets near for different control parameters. The...
Abstract Microscopic adhesion of oil droplets is a hot research topic within multiphase flow systems in the petrochemical field recent years, and it also key to revealing mechanism droplet–wall interaction. In this paper, high‐speed camera was used capture dynamic process impacting stainless steel, polyethylene, brass, other materials water, deeply analyze influence material wettability, droplet size, inclination on behaviour process, draw Re~ θ eq phase diagram. The experimental results...