Experiment Study on the Coupling Effect Between Film Boiling Heat Transfer and Evaporation Drag Around a Hot-particle Moving in Cold Liquid

Extremely high rapid evaporation could occur when high temperature particles contact with low temperature liquid. This kind of phenomenon is associated with the safety of engineering and the problems in hightransient multiphase fluid and heat transfer. The study is concerned in the design and buildup an observable experiment facility. The first series of experiments are performed by pouring one or six high temperature particles into a low saturated temperature liquid pool. The fallingdown speeds of particles are recorded by highspeed camera, so the special resistant acting on the moving hightemperature particles can be known, which is induced by the highspeed evaporation surrounding the particles. The study has experimentally verified the theory of evaporation drag model.