Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower

Cooling towers have been widely used in power plants and space air conditioning systems. The rain region plays an important role in the operation of cooling towers. In this paper, four different models have been investigated that describe the motion of water droplets in the rain region of a coolin...

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Bibliographic Details
Main Authors:	Liu, Baomin, Hawlader, Mohammad Nurul Alam
Format:	Book Chapter
Language:	English
Published:	IIUM Press 2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/20092/ http://irep.iium.edu.my/20092/ http://irep.iium.edu.my/20092/1/analyses_of_motion_-_C32.pdf

id	iium-20092
recordtype	eprints
spelling	iium-200922012-06-05T07:46:22Z http://irep.iium.edu.my/20092/ Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower Liu, Baomin Hawlader, Mohammad Nurul Alam TJ Mechanical engineering and machinery Cooling towers have been widely used in power plants and space air conditioning systems. The rain region plays an important role in the operation of cooling towers. In this paper, four different models have been investigated that describe the motion of water droplets in the rain region of a cooling tower. Due to the non-uniformity of the flow, heat and mass transfer processes inside the cooling tower, the velocity field of water droplets is, at least, two-dimensional. Therefore, these models were tested with a numerical simulation program that accounts for the non-uniform now. The velocity fields of water droplets, the variations of the drag coefficient with the relative velocity of water droplets have been predicted. The effect of drag and buoyancy force on the motion of water droplets were also studied numerically. The model based on Dreyer and Erens's correlation has been found to represent the actual situation reasonably well and is recommended for the modelling of water droplets motion in cooling towers. IIUM Press 2011 Book Chapter PeerReviewed application/pdf en http://irep.iium.edu.my/20092/1/analyses_of_motion_-_C32.pdf Liu, Baomin and Hawlader, Mohammad Nurul Alam (2011) Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower. In: Alternative energy. IIUM Press, Kuala Lumpur, pp. 240-251. ISBN 9789674181581 http://rms.research.iium.edu.my/bookstore/default.aspx
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Liu, Baomin Hawlader, Mohammad Nurul Alam Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
description	Cooling towers have been widely used in power plants and space air conditioning systems. The rain region plays an important role in the operation of cooling towers. In this paper, four different models have been investigated that describe the motion of water droplets in the rain region of a cooling tower. Due to the non-uniformity of the flow, heat and mass transfer processes inside the cooling tower, the velocity field of water droplets is, at least, two-dimensional. Therefore, these models were tested with a numerical simulation program that accounts for the non-uniform now. The velocity fields of water droplets, the variations of the drag coefficient with the relative velocity of water droplets have been predicted. The effect of drag and buoyancy force on the motion of water droplets were also studied numerically. The model based on Dreyer and Erens's correlation has been found to represent the actual situation reasonably well and is recommended for the modelling of water droplets motion in cooling towers.
format	Book Chapter
author	Liu, Baomin Hawlader, Mohammad Nurul Alam
author_facet	Liu, Baomin Hawlader, Mohammad Nurul Alam
author_sort	Liu, Baomin
title	Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
title_short	Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
title_full	Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
title_fullStr	Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
title_full_unstemmed	Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
title_sort	analyses of motion and drag coefficient of water droplets in a natural draught cooling tower
publisher	IIUM Press
publishDate	2011
url	http://irep.iium.edu.my/20092/ http://irep.iium.edu.my/20092/ http://irep.iium.edu.my/20092/1/analyses_of_motion_-_C32.pdf
first_indexed	2023-09-18T20:30:08Z
last_indexed	2023-09-18T20:30:08Z
_version_	1777408680364343296

Analyses of motion and drag coefficient of water droplets in a natural draught cooling tower

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