Experimental and computational analysis of circular eccentric venturi meters: Discharge coefficients and flow regimes

IF 5.9 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-08-27 DOI:10.1016/j.asej.2025.103727

M.S. Karthik , P.Siva Kota Reddy , Tapankumar Trivedi , Asha Rajiv , Madhu Chennabasappa , Fehmi Gamaoun

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Abstract

In this present study, experimental and numerical analysis on circular eccentric Venturi meters were carried out. An experimental discharge coefficient of 0.969 was determined for a beta ratio of 0.5 and 6.25 mm eccentricity. A computational fluid dynamics simulation investigated the behavior of the meter at different Reynolds numbers and eccentric heights. The results agreed with literature data and validated the proposed computational methodology. It was observed that increasing the eccentric distance had no significant impact on the discharge coefficient. The coefficient exhibited a strong correlation with the flow regime, decreasing from 0.979 to 0.186 as the Reynolds number decreased from 100,000 to 1. However, the coefficient decreased significantly as the Reynolds number decreased. The estimated combined standard uncertainty in the discharge coefficient was ± 2.6 %, with an expanded uncertainty of ± 5.2 % at a 95 % confidence level. These findings could improve industrial flow measurements through a better eccentric Venturi meter design.

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圆形偏心文丘里仪表的实验和计算分析：流量系数和流动状态

本文对圆形偏心文丘里仪进行了实验和数值分析。当β比为0.5和6.25 mm偏心距时，试验流量系数为0.969。计算流体力学模拟研究了该流量计在不同雷诺数和偏心高度下的性能。结果与文献数据一致，验证了所提出的计算方法。结果表明，增大偏心距对流量系数无显著影响。当雷诺数从10万减小到1时，该系数从0.979减小到0.186。但随着雷诺数的减小，该系数明显减小。估计排放系数的综合标准不确定度为±2.6%，在95%置信水平下的扩展不确定度为±5.2%。这些发现可以通过更好的偏心文丘里流量计设计来改进工业流量测量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.