CFD-based anti-destabilizaition flow inner core design optimization for ultrasonic water meter
FENG Jianke¹, ZHANG Yuan¹, LIU Zhenggang², YU Ming¹
1. Qingdao iTechene Technologies Co., Ltd., Qingdao 266100, China;
2. School of Energy and Power Engineering, Shandong University, Jinan 250061, China
Abstract: Based on flow field analysis on ultrasonic wave flow in water meter by using CFD software, anti-disturbance inner core structure that can lower pressure loss and improve measuring precision is designed. Compared with current ordinary water meter inner core, pressure loss △P, measuring section speed standard deviation E_u-std under disturbance working condition and valve relative indication error E, and experimental verification are carried out. The experiment result shows that, under common flow point of water meter, compared with ordinary inner core, when the water meter is installed anti-disturbance inner core, its △P can reduce more than 10 kPa. Valve relative indication error E under maximum disturbance working condition can reduce 1.7%. Furthermore, this articles also researches diversion column length of anti-disturbance inner core, c/D=0.3-1.25, back length e/D=0-0.75 and its influence on △P and E_u-std. The result shows that, within the research scope, when c/D=0.7, e/D=0.4, the comprehensive performance effect is good, pressure loss is 41 kPa, and after installing valve the maximum relative indication error E_max is 2.1%.
Keywords: ultrasonic flowmeter;anti-destabilizaition flow inner core;numerical calculation;speed standard deviation;pressure loss
2023, 49(9):139-145  收稿日期: 2022-05-01;收到修改稿日期: 2022-07-13
基金项目:
作者简介: 冯建科（1981-），男，山东济宁市人，高级工程师，主要从事超声波计量仪表方面的开发
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