ChaoPeng Wu's research while affiliated with University of Science and Technology of China and other places
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Publications (3)
The article presents the dynamic process of a single water droplet impinging on a hot oil surface with various temperatures ranging from 205 to 260 \(^\circ \hbox {C}\). Distilled water is used to produce water droplets with different diameters. The impact behavior is recorded by using a high-speed digital camera with the speed of 2000 fps. The res...
A series of experimental and theoretical work are performed to enrich the previous research concerning single water drop impacting on burning ethanol surface. Three typical impact regimes including crater-first-jet, crater-second-jet and surface bubble are discussed detailedly, and an impact regime map is built up. For crater-first-jet and crater-s...
Citations
... Moreover, they deduced that droplet properties play a pivotal role in crater evolution. In another research [40], they studied the impact of a distilled water droplet on a hot oil surface with different temperatures. They observed the vapor explosion phenomenon when the oil temperature exceeded 210 • C and maintained that the We number, oil temperature, and droplet size govern the vapor explosion time. ...
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... Therefore, the pressure threshold P for the large bubbles occurrence at different environmental pressures can be expressed as a function of the liquid density ρ, the droplet diameter D 0 , and the droplet speed U 0 , i.e., P = f (ρ, σ, D 0 , U 0 ). Xu et al. [68] studied the threshold for the large bubble occurrence based on dimensional analysis and suggested a power function of f (We), i.e., f (We) ∼ We a , where a is constant. Substituting it into P = ρU 2 0 f (We), the threshold for large bubble occurrence at different environmental pressures can be expressed as where b ≡ 1/(a + 1) is constant for this study, which can be obtained by fitting. ...
... Droplets impacting on solid surfaces widely exists in the industrial field and has many useful applications [1][2][3] , such as spray cooling [ 4 , 5 ], inkjet printing [6] , spray painting [7] , metal quenching [8] , etc. Many studies have focused on the topic of droplet impact and concluded that the impact outcomes are mainly determined by the properties of the droplet liquid such as the density, viscosity, surface tension and droplet diameter [9][10][11][12][13] , and the solid surface parameters including temperature of solid surface and roughness [ 4 , 14-16 ]. ...
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