eprintid: 5540
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/00/55/40
datestamp: 2023-11-09 16:17:17
lastmod: 2023-11-09 16:17:17
status_changed: 2023-11-09 16:03:08
type: conference_item
metadata_visibility: show
creators_name: Al-Kayiem, A.H.H.
creators_name: Ibrahim, M.A.
title: The influence of the equivalent hydraulic diameter on the pressure drop prediction of annular test section
ispublished: pub
keywords: Drops; Ducts; Engineering research; Flow of fluids; Fluid dynamics; Forecasting; Heat transfer; Pressure drop; Reynolds number; Testing, Correction factors; Equivalent diameter; Frictional pressure drops; Hydraulic analysis; Hydraulic diameter; Physical dimensions; Pressure predictions; Turbulent fluid flow, Annular ducts
note: cited By 3; Conference of 3rd International Conference of Mechanical Engineering Research, ICMER 2015 ; Conference Date: 18 August 2015 Through 19 August 2015; Conference Code:119245
abstract: The flow behaviour and the pressure drop throughout an annular flow test section was investigated in order to evaluate and justify the reliability of experimental flow loop for wax deposition studies. The specific objective of the present paper is to assess and highlight the influence of the equivalent diameter method on the analysis of the hydrodynamic behaviour of the flow and the pressure drop throughout the annular test section. The test section has annular shape of 3 m length with three flow passages, namely; outer thermal control jacket, oil annular flow and inner pipe flow of a coolant. The oil annular flow has internal and external diameters of 0.0422 m and 0.0801 m, respectively. Oil was re-circulated in the annular passage while a cold water-glycol mixture was re-circulated in the inner pipe counter currently to the oil flow. The experiments were carried out at oil Reynolds number range of 2000 to 17000, covering laminar, transition and turbulent flow regimes. Four different methods of equivalent diameter of the annulus have been considered in this hydraulic analysis. The correction factor model for frictional pressure drop was also considered in the investigations. All methods addressed the high deviation of the prediction from the experimental data, which justified the need of a suitable pressure prediction correlation for the annular test section. The conventional hydraulic diameter method is a convenient substitute for characterizing physical dimension of a non-circular duct, and it leads to fairly good correlation between turbulent fluid flow and heat transfer characteristic of annular ducts.
date: 2015
publisher: Institute of Physics Publishing
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84960153179&doi=10.1088%2f1757-899X%2f100%2f1%2f012049&partnerID=40&md5=2e4f926379d5390528d6cce87f6113f8
id_number: 10.1088/1757-899X/100/1/012049
full_text_status: none
publication: IOP Conference Series: Materials Science and Engineering
volume: 100
number: 1
refereed: TRUE
issn: 17578981
citation:   Al-Kayiem, A.H.H. and Ibrahim, M.A.  (2015) The influence of the equivalent hydraulic diameter on the pressure drop prediction of annular test section.  In: UNSPECIFIED.