The heat characteristics and moving regulation of phase change interface during the progress of water flowing along icicle at low Reynolds number are investigated. The mapping relationship between the experimental data and the heat transfer coefficient in phase change interface of icicle is built. Moving regulation of phase change interface of icicle is recorded by using industrial cameras through changing initial dimension of icicle

initial temperature in icicle

velocity and temperature of water. By analyzing the experimental results

some conclusions are as follow:the number of azimuths is different for each measurement point

as the melting process is carried out

the Nusselt number values of the measurement points increase first and then decrease

and there is a maximum value in the middle of the whole melting process. The convective heat transfer coefficient along the azimuth angle increases with the increase of the velocity or temperature of the water flow under the condition that the remaining experimental control parameters are unchanged. Empirical correlation of Nuφ

Gr

Re

Pr

Ste and φ is obtained.