Experimental and Theoretical Study on Velocity Field of Buoyancy Convection in the Melt
熔体内重力对流速度场的实验研究及其理论分析

A high temperature in situ observation method was newly developed to study the buoyancydriven convection in KNbO3 melt. A thin loop-like Pt wire heater (about 2.5mm in diameter)was employed to heat and suspend the KNbO3 melts. A thin plane film of the sample melt wasformed. The temperature and fluid velocity profiles in the melt were measured experimentally.The quantitative analysis for the velocity of the fluid flow was also made theoretically.