DSpace
 

KNUSTSpace >
Research Articles >
College of Engineering >

Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/11704

Title: Experimental determination of fractures and conduits and the applicability of Cubic law in closed fractures
Authors: Zhang, Chunyan
Shu, Longcang
Lu, Chengpeng
Appiah-Adjei, Emmanuel Kwame
Wang, Xi
Keywords: Fractures
Conduits
Cubic law
Hydraulic head loss
Issue Date: 2015
Publisher: Experimental Thermal and Fluid Science
Citation: C. Zhang, L. Shu, C. Lu, E.K. Appiah-Adjei, X. Wang, Experimental determination of fractures and conduits and the applicability of Cubic law in closed fractures, Experimental Thermal and Fluid Science (2015), doi: http://dx.doi.org/10.1016/j.expthermflusci.2015.07.013
Abstract: A laboratory experimental method has been developed to obtain the hydraulic head loss of either the closed fractures or conduits based on balance of energy. It was found that the linearity between hydraulic head loss and flow velocity decreases as the aperture increases, based on which a possible division of fractures and conduits is proposed. The results of the division show that a closed flow structure with less than 1.4635mm aperture can be defined as a fracture whilst a closed flow structure with more than 1.8375mm aperture can be defined as a conduit. The flow structure with an aperture of 1.6000mm is in the transitional area of fractures and conduits. In addition, the Cubic law could not exactly describe the relationship between hydraulic head loss and velocity when applied to closed fractures in these investigations. The effects of deviations from ideal conditions when applying the Cubic law caused an apparent reduction in hydraulic head loss and may be incorporated into the Cubic law by adding the effects of both the width of the fracture and the ratio of the width to the aperture. The coefficient n was introduced to indicate the influence of the ratio of the width to the aperture on hydraulic head loss.
Description: An article by C. Zhang, L. Shu, C. Lu, E.K. Appiah-Adjei, X. Wang, Experimental determination of fractures and conduits and the applicability of Cubic law in closed fractures, Experimental Thermal and Fluid Science (2015), doi: http://dx.doi.org/10.1016/j.expthermflusci.2015.07.013
URI: http://hdl.handle.net/123456789/11704
Appears in Collections:College of Engineering

Files in This Item:

File Description SizeFormat
zhang2015 (1).pdf659.13 kBAdobe PDFView/Open

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback