A5075206323- Fluid Dynamics and Heat Transfer
- Icing and De-icing Technologies
- Fluid Dynamics Simulations and Interactions
- Surface Modification and Superhydrophobicity
- Fluid Dynamics and Thin Films
- Lattice Boltzmann Simulation Studies
- Solar Thermal and Photovoltaic Systems
- Nanofluid Flow and Heat Transfer
- Solar-Powered Water Purification Methods
- Adhesion, Friction, and Surface Interactions
Beihang University
2021-2024
As a highly promising interface capture tool, the phase field method (PFM) has gained fast development in past 20 years or so including simulation of droplet impact. The mobility tuning parameter χ PFM, however, is hard to determine since it ambiguously reflects relative strength between advection and diffuse effects that are difficult quantify. This problem becomes even more complex when coupled with contact line movement modeling, i.e., dynamic angle (DCA) model, which closely related...
Abstract A new form of pancake bouncing is discovered in this work when a droplet impacts onto micro‐structured superhydrophobic surfaces an environment pressure less than 2 kPa, and unprecedented reduction contact time by ≈85% obtained. The mechanisms forming unique phenomenon are examined combining experimental observation, numeical modelling improved theoretical model for the overpressure effect arising from vaporisation inside micro‐scaled structures. competition among vapor effect,...
Recent years see increasing studies of air entrapment during droplet impacting on a solid surface with many results. The dynamics trapped film impact is investigated in this work by the phase field method combination dynamic contact angle (DCA) model. DCA model established experimentally capturing analogy to entrapped evolution. By using as input, simulation can accurately reproduce experimental effects viscosity and tension are then studied, three possible regimes identified, demarcated an...
As low-cost, widely distributed and easily accessible renewable clean energy, solar energy has attracted more attention. Direct absorption collectors can convert into heat, but their efficiency is closely related to the performance of working fluid. In order improve direct collectors, an experimental study on selective by hybrid nanofluids was carried out. Five were prepared characterized, transfer advantages nanofluid over single carefully studied. Experiments have found that light-to-heat...