Design of Three-Dimensional Characteristics of Perforated Plate for Liquid Nitrogen Balanced Flowmeter

Shiyao Peng, Feng Zhao, Luoqian Liu, Chong Chai and Xiaobin Zhang ()
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Shiyao Peng: PipeChina Institute of Science and Technology, Langfang 065000, China
Feng Zhao: Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310057, China
Luoqian Liu: PipeChina Institute of Science and Technology, Langfang 065000, China
Chong Chai: PipeChina Institute of Science and Technology, Langfang 065000, China
Xiaobin Zhang: Institute of Refrigeration and Cryogenics, Zhejiang University, Hangzhou 310057, China

Energies, 2024, vol. 17, issue 13, 1-14

Abstract: To design the two-dimensional structural parameters of the core throttling component, i.e., the perforated plate for a liquid nitrogen (LN 2 ) balanced flowmeter, this paper presented an orthogonal experiment scheme with three parameters, three factors, and three interactions, combined with the three-dimensional CFD numerical simulation. The constructed mixture multi-phase flow numerical model considers the complex cavitation effect of LN 2 with a thermal effect. A DN40 balanced flowmeter and an LN 2 flowrate test setup based on a standard flowmeter were constructed, and the measured flowrate data were used to evaluate the CFD model. Based on the optimized two-dimensional structure and the validated numerical model, the influence of the three-dimensional thickness of the perforated plate on the flow and pressure drop coefficient was investigated. It was found that there are two throttling forms as the thickness increases, resulting in two pressure-changing characteristics. The formation mechanism was explained by analyzing the turbulence intensity distribution. Finally, the final flow coefficient, pressure drop coefficient, and upper limit of measurement due to the cavitation were analyzed and obtained. The results provide a feasible parameter design method for the cryogenic balanced flow meters.

Keywords: balanced flowmeter; perforated plate; CFD; orthogonal experiment; cryogenic cavitation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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