Browsing Research Articles (Mechanical and Aeronautical Engineering) by UP Author "Ndenguma, Dickson Daniel"

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A computational fluid dynamics model for investigating air flow patterns in underground coal mine sections

Ndenguma, Dickson Daniel; Dirker, Jaco; Burger, N.D.L (Nicolaas Daniel Lombard) (Southern African Institute of Mining and Metallurgy, 2014-06)

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 ...
Heat transfer and pressure drop in annuli with approximately uniform internal wall temperatures in the transitional flow regime

Ndenguma, Dickson Daniel; Dirker, Jaco; Meyer, Josua P. (Elsevier, 2017-08)

An experimental study was conducted to determine the lower and upper Reynolds number limits of the transitional flow regime, and the characteristics of the heat transfer coefficients and friction factors for annular passages ...
Transitional flow regime heat transfer and pressure drop in an annulus with non-uniform wall temperatures

Ndenguma, Dickson Daniel; Dirker, Jaco; Meyer, Josua P. (Elsevier, 2017-05)

An experimental investigation was carried out to determine the average heat transfer coefficients and friction factors in the transitional flow regime of a horizontal concentric annular passage. The flow was in the mixed ...

Now showing items 1-3 of 3

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