Prediction of pressure drop for turbulent fluid flow in 90° bends

N. M. Crawford; G. Cunningham; P. L. Spedding

doi:10.1243/095440803322328827

Prediction of pressure drop for turbulent fluid flow in 90° bends

N. M. Crawford^*, G. Cunningham, P. L. Spedding

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

52 Downloads (Pure)

Abstract

The pressure drop for turbulent single-phase fluid flow around sharp 90° pipe bends has proven to be difficult to predict owing to the complexity of the flow arising from frictional and separation effects. Existing models accurately predict the frictional effects, but no precise models are available to predict the flow due to separation. It is the purpose of this work to propose a model capable of such prediction. The proposed model is presented and added to an existing model to predict pressure losses over the turbulent Reynolds number range up to 3 × 10⁵. The predicted data is within a spread of +3 to -2 per cent of existing experimental data. Future work will validate this model experimentally and computationally.

Original language	English
Pages (from-to)	153-156
Number of pages	4
Journal	Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering
Volume	217
Issue number	3
DOIs	https://doi.org/10.1243/095440803322328827
Publication status	Published - 22 Oct 2003

Keywords

90° bend
Friction factor
Pressure loss

ASJC Scopus subject areas

Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1243/095440803322328827Licence: Unspecified

Prediction of pressure drop for turbulent fluid flow in 90° bends
Copyright 2003 The Author. This work is made available online in accordance with the publisher’s policies. Please refer to any applicable terms of use of the publisher.
Accepted author manuscript, 284 KBLicence: Unspecified

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Pressure Losses at Bends and Junctions
Author: Crawford, N., 2005
Supervisor: Cunningham, G. (Supervisor)
Student thesis: Doctoral Thesis › Doctor of Philosophy

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abstract = "The pressure drop for turbulent single-phase fluid flow around sharp 90° pipe bends has proven to be difficult to predict owing to the complexity of the flow arising from frictional and separation effects. Existing models accurately predict the frictional effects, but no precise models are available to predict the flow due to separation. It is the purpose of this work to propose a model capable of such prediction. The proposed model is presented and added to an existing model to predict pressure losses over the turbulent Reynolds number range up to 3 × 105. The predicted data is within a spread of +3 to -2 per cent of existing experimental data. Future work will validate this model experimentally and computationally.",

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AU - Crawford, N. M.

AU - Cunningham, G.

AU - Spedding, P. L.

PY - 2003/10/22

Y1 - 2003/10/22

N2 - The pressure drop for turbulent single-phase fluid flow around sharp 90° pipe bends has proven to be difficult to predict owing to the complexity of the flow arising from frictional and separation effects. Existing models accurately predict the frictional effects, but no precise models are available to predict the flow due to separation. It is the purpose of this work to propose a model capable of such prediction. The proposed model is presented and added to an existing model to predict pressure losses over the turbulent Reynolds number range up to 3 × 105. The predicted data is within a spread of +3 to -2 per cent of existing experimental data. Future work will validate this model experimentally and computationally.

AB - The pressure drop for turbulent single-phase fluid flow around sharp 90° pipe bends has proven to be difficult to predict owing to the complexity of the flow arising from frictional and separation effects. Existing models accurately predict the frictional effects, but no precise models are available to predict the flow due to separation. It is the purpose of this work to propose a model capable of such prediction. The proposed model is presented and added to an existing model to predict pressure losses over the turbulent Reynolds number range up to 3 × 105. The predicted data is within a spread of +3 to -2 per cent of existing experimental data. Future work will validate this model experimentally and computationally.

KW - 90° bend

KW - Friction factor

KW - Pressure loss

U2 - 10.1243/095440803322328827

DO - 10.1243/095440803322328827

M3 - Article

AN - SCOPUS:0141889688

VL - 217

SP - 153

EP - 156

JO - Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

JF - Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering

SN - 0954-4089

IS - 3

ER -

Prediction of pressure drop for turbulent fluid flow in 90° bends

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Pressure Losses at Bends and Junctions

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