Pressure distribution and similarity theory of an elbow flowmeter based on experiments and CFD simulations

Meng, Xianjv; Qin, Chao; Li, Jian

doi:10.1007/s40430-022-03828-w

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…Research on head losses or loss coefficient in elbows has not ceased in recent years, which can be seen in the experimental work carried out by Silverio [2], Musa [5], Yogaraja [6] and Arteaga [12]. Likewise, recent research has been reported where numerical models are applied to estimate head losses in elbows, such as the work reported by Selim [13], Mańko [14], Meng [15] and Chang [16]. However, limited information is available on small-diameter fittings, and these studies necessitate calibration or comparison with experimental data for validation, highlighting the importance of laboratory research.…”

Section: Introductionmentioning

confidence: 99%

Head losses and experimental loss coefficient in 45o and 90o elbows of PVC pipes with small diameters for single-phase flow and moderate Reynolds numbers

Arteaga-Hernández,

Villegas-León,

Acuña-Izquierdo

2024

Preprint

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This study presents head losses (hL) and loss coefficients (K) obtained experimentally for schedule 40 PVC pipe elbows, with 90o and 45o in small commercial diameters of ½ to 1½ inches that are commonly used in small networks. The investigation was conducted on a system constructed with short pipes and fittings necessary to measure, direct, and control flow, as well as to evaluate pressure head losses at elbows. Simple water flow was used with rates of 0.342 to 0.980 lps (Q), which generated moderate Reynolds numbers (Re) of 13337 to 80221. It was found that hL showed dependence on the velocity head in all elbows, as well as that hL are greater as the diameter increases for same velocity head. The K values in the elbows tended to be constant when Q &gt; 0.75 lps, but for Q &lt; 0.75 lps the K coefficient increased inversely proportional to Q, becoming larger as the diameter increased. Likewise, the K coefficient tended to increase as Re decreased, while K tended to be constant as Re increased. The results of the experimental coefficient were compared against K values reported in the literature, where significant similarities and discrepancies were found.

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