Comparison Research on Local Velocity Measurement Techniques for Liquid Metal

doi:10.3969/j.issn.1008- 0198.2023.05.020

Abstract

Abstract: The flow field affects the flow rate, temperature, oxygen concentration and stress distribution in key equipment of energy system. Obtaining accurate flow field distribution can help improve the structural design ability and system operation reliability. In order to select suitable methods for measuring flow field in liquid metal cooled reactor of advanced nuclear energy system, it is reviewed the suitable measurement techniques for local flow velocity of liquid metal. And the research progress as well as advantages and disadvantages of different measurement techniques are compared. It is found that there are no mature metal flow field measuring instruments for engineering application at present. As for the invasive method, the technology maturity of pitot tube, electromagnetic probe, and eddy current flowmeter probe is relatively high. As for the non-invasive method, the maturity of ultrasonic doppler velocimetry is the highest while the contactless inductive flow tomography is better in application prospects. On this basis, measurement techniques are recommended for typical operating situations in nuclear reactors, among which the contactless inductive method has wider applicability due to its nature of no added particles and high time resolution.

Key words: liquid metal, local velocity, measurement techniques, research review

CLC Number:

TL363

XIAO Hui, LIU Zhichun, WANG Suhao, ZHANG Xianjun, LAN Zhike, ZHUO Wenbin, WANG Sheng. Comparison Research on Local Velocity Measurement Techniques for Liquid Metal[J]. Hunan Electric Power, 2023, 43(5): 134-143.

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