Wall effect on pressure drop in packed beds

The wall effect on the pressure drop in packed beds could be considered by modifying the Ergun equation based on the concept of hydraulic radius. However, the prediction of the two constants involved in the modified Ergun equation, if using the correlations available in the literature, could differ...

Full description

Saved in:

Bibliographic Details
Main Author:	Cheng, Nian-Sheng
Other Authors:	School of Civil and Environmental Engineering
Format:	Article
Language:	English
Published:	2012
Subjects:	DRNTU::Engineering::Civil engineering::Water resources
Online Access:	https://hdl.handle.net/10356/83906 http://hdl.handle.net/10220/7653
Tags:	Add Tag No Tags, Be the first to tag this record!
Institution:	Nanyang Technological University
Language:	English

id	sg-ntu-dr.10356-83906
record_format	dspace
spelling	sg-ntu-dr.10356-839062020-03-07T11:43:41Z Wall effect on pressure drop in packed beds Cheng, Nian-Sheng School of Civil and Environmental Engineering DRNTU::Engineering::Civil engineering::Water resources The wall effect on the pressure drop in packed beds could be considered by modifying the Ergun equation based on the concept of hydraulic radius. However, the prediction of the two constants involved in the modified Ergun equation, if using the correlations available in the literature, could differ significantly from one another, and all correlations are not applicable for very low bed-to-particle diameter ratios. In this study, a capillary-type model is proposed to be composed of a bundle of capillary tubes subject to a series of local energy losses, the latter being simulated in terms of sphere drag. The formulas derived provide a good description of variations in the two constants for bed-to-particle diameter ratios ranging from 1.1 to 50.5. Accepted version 2012-03-22T01:00:18Z 2019-12-06T15:34:19Z 2012-03-22T01:00:18Z 2019-12-06T15:34:19Z 2011 2011 Journal Article Cheng, N. S. (2011). Wall effect on pressure drop in packed beds. Powder Technology, 210(3), 261-266. 0032-5910 https://hdl.handle.net/10356/83906 http://hdl.handle.net/10220/7653 10.1016/j.powtec.2011.03.026 en Powder technology © 2011 Elsevier. This is the author created version of a work that has been peer reviewed and accepted for publication by Powder Technology, Elsevier. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [DOI: http://dx.doi.org/10.1016/j.powtec.2011.03.026]. 5 p. application/pdf
institution	Nanyang Technological University
building	NTU Library
country	Singapore
collection	DR-NTU
language	English
topic	DRNTU::Engineering::Civil engineering::Water resources
spellingShingle	DRNTU::Engineering::Civil engineering::Water resources Cheng, Nian-Sheng Wall effect on pressure drop in packed beds
description	The wall effect on the pressure drop in packed beds could be considered by modifying the Ergun equation based on the concept of hydraulic radius. However, the prediction of the two constants involved in the modified Ergun equation, if using the correlations available in the literature, could differ significantly from one another, and all correlations are not applicable for very low bed-to-particle diameter ratios. In this study, a capillary-type model is proposed to be composed of a bundle of capillary tubes subject to a series of local energy losses, the latter being simulated in terms of sphere drag. The formulas derived provide a good description of variations in the two constants for bed-to-particle diameter ratios ranging from 1.1 to 50.5.
author2	School of Civil and Environmental Engineering
author_facet	School of Civil and Environmental Engineering Cheng, Nian-Sheng
format	Article
author	Cheng, Nian-Sheng
author_sort	Cheng, Nian-Sheng
title	Wall effect on pressure drop in packed beds
title_short	Wall effect on pressure drop in packed beds
title_full	Wall effect on pressure drop in packed beds
title_fullStr	Wall effect on pressure drop in packed beds
title_full_unstemmed	Wall effect on pressure drop in packed beds
title_sort	wall effect on pressure drop in packed beds
publishDate	2012
url	https://hdl.handle.net/10356/83906 http://hdl.handle.net/10220/7653
_version_	1681045748164067328

Wall effect on pressure drop in packed beds

Similar Items