Dr. Dickson Daniel Ndenguma

Dr. Dickson Daniel Ndenguma

Author

Technical Education

3 publications

A trained Mechanical Engineer, Dickson Ndenguma joined University of Malawi – The Polytechnic in 2000 in the Department of Technical Education to teach Science and Technology modules. Since then, has worked in different position including dean of Faculty of Education and Media Studies.
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A computational fluid dynamics for investigating air flow in underground coal mine sections

Journal Article
Published 2 years ago, 366 views
Author
Dr. Dickson Daniel Ndenguma
Co-authors
Dr. Dickson Daniel Ndenguma
Abstract
This investigation compares the results from an experimental and numerical study of air flow in a scaled-down underground coal mine model. This was done in order to determine if numerical analysis can be relied upon when searching for ventilation solutions to control high concentration of coal dust and methane gas in underground coal mines. Steady state analyses were used to identify flow patterns and recirculation regions within the mining section while transient state analyses were used to determine the time taken to extract the initial air from the model. The agreement between the experimental and numerical results indicates that numerical modelling is useful in this regard. The study went further to devise a method of determining the optimum position of the jet fan that is responsible for mine-gas dilution at different stages of mining.
Year of Publication
2014
Journal Name
Journal of the Southern African Institute of Mining and Metallurgy
Volume
114
Issue
6
Page Numbers
419-425
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