Measurements of Turbulence in a Liquid-Metal Two-Phase Flow by Using a Miniature Electro-Magnetic Probe

Abstract

A nitrogen gas-lead bismuth two-phase flow was experimentally studied as a two-phase flow with large liquid-to-gas density ratio. Experiments were performed to understand turbulent structure in a liquid-metal two-phase flow by using a miniature electro-magnetic probe. Radial profiles of axial liquid velocity and turbulence intensity were measured by using the electro-magnetic probe. Turbulence is induced mainly by rising bubbles in the liquid-metal. Measurement results show that the turbulence intensity at the tube center was proportional to the void fraction to the power of 0.8 for higher void fraction at the present experimental conditions.