Pressure Losses in Smooth Pipe Bends

Ito, Haruko

doi:10.1115/1.3662501

Cited by 181 publications

(100 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Research by Ito 4 focused on analysis of data concerning declining pressure during turbulent flow in smooth-pipe curves. Pipe bends of varying angle were attached to linear piping, to form a consistent entrance and exit flow.…”

Section: Introductionmentioning

confidence: 99%

Steady laminar flow in a 90° bend

Pantokratoras

2016

Advances in Mechanical Engineering

View full text Add to dashboard Cite

This research undertook an assessment of the characteristics of laminar flow in a 90°bend. The research utilised the computational fluid dynamics software tool ANSYS Fluent, adopting a finite volume method. The study focused on pressure decreases, velocity profiles, Dean vortices and Dean cells present in the bend. The results indicated that the Dean vortices first appear slightly at the bend, take a clear form at the exit pipe and disappear further downstream. This article contains also an original chart for determining the Darcy-Weisbach friction factor, while the areas of pipe where Dean vortices and Dean cells formed are presented in a bifurcation diagram.

show abstract

Section: Introductionmentioning

confidence: 99%

Steady laminar flow in a 90° bend

Pantokratoras

2016

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…3 is included only when the loss due to the vertical elbow needs to be taken into account. The minor loss factor, k, for a 90º bend with single-phase water flow can be obtained from Ito (1960) The single-phase water pressure drop across the 90-degree vertical elbows for the vertical-tohorizontal-to-vertical section is shown in Fig. 3.5.…”

Section: Pressure Dropmentioning

confidence: 99%

Interfacial Area Transport and Regime Transition in Combinatorial Channels

Kim¹

2011

View full text Add to dashboard Cite

“…However, the decrease in pressure drop is negligible for amount of flyash more than 30 %. Ito (1960) has shown that to establish permanent pressure loss across a bend, considerable lengths of the pipe on both sides of the bend have to be included and this is shown schematically in Fig. 5 as described below: i. A-B-C-D-E shows the actual hydraulic gradient.…”

Section: Pressure Dropmentioning

confidence: 99%

Flow of Bi-modal Slurry through Horizontal Bend

Kaushal

Kumar

Tomita

et al. 2017

KONA

View full text Add to dashboard Cite

Extensive experimental investigations were carried out for pressure drop and concentration profile in the flow of bi-modal slurry comprising silica sand and fly ash with mean diameter of 450 and 75 μm, respectively, at six silica sand:flyash ratios (namely, 100:0, 90:10, 80:20, 70:30, 60:40 and 0:100) in a 53 mm diameter horizontal bend. Flow velocity was varied up to 3.56 m/s (namely, 1.78, 2.67 and 3.56 m/s) at two efflux concentrations of 8.82 % and 16.28 % for each silica sand:flyash ratio. The experimental data were compared with the CFD modelling results using an Eulerian two-phase model available in the FLUENT software. Eulerian model predicted almost all the experimental data collected in the present study for pressure drop and concentration profile with fair accuracy. The bend loss coefficient k t was found to decrease with increase in percentage of flyash for silica sand:flyash ratio up to 70:30. Further increase in flyash did not show any significant change in the value of k t .

show abstract

Pressure Losses in Smooth Pipe Bends

Abstract: Downloaded From: http://fluidsengineering.asmedigitalcollection.asme.org/ on 05/14/2015 Terms of Use: http://asme.org/terms 132 / MARCH 1 960 Transactions of the ASME Downloaded From: http://fluidsengineering.asmedigitalcollection.asme.org/ on 05/14/2015 Terms of Use: http://asme.org/terms

Cited by 181 publications

References 6 publications

Steady laminar flow in a 90° bend

Steady laminar flow in a 90° bend

Interfacial Area Transport and Regime Transition in Combinatorial Channels

Flow of Bi-modal Slurry through Horizontal Bend

Contact Info

Product

Resources

About