Transport Processes of Heat and Momentum in the Wall Region of Turbulent Pipe Flow

Numerical study of turbulent heat and fluid flow in a straight square duct at higher Reynolds numbers

“…[32], and the data in Ref. [62]. The rms curves of h þ is similar to the rms curves of u rms given in Fig.…”

Numerical study of forced turbulent heat convection in a straight square duct

“…[28], and the data labeled by 'Isshiki' abstracted indirectly from [28]. The friction Reynolds number in the work of Hishida et al [53] is 879.…”

Direct numerical simulation of turbulent heat transfer in pipe flows: Effect of Prandtl number

“…Twelve versions of low Reynolds k À models and two low Reynolds number for Reynolds stress turbulence models were analyzed by Thakre and Joshi (2000). The heat transfer predictions were compared with the experimental data of Gowen and Smith (1967), Kader (1981), Bremhorst and Bullock (1973) and Hishida et al (1986). Thakre and Joshi (2000) showed that the k À models performed relatively better than the Reynolds stress models for predicting the mean axial temperature and the Nusselt number in pipe flows, for different Prandtl numbers.…”

“…Experiments which reveal the mechanistic picture of heat and momentum in the wall region are only few, owing to the difficulty in measuring the Reynolds stress and turbulent heat flux fluctuations very close to the wall. Hishida et al (1986) have developed techniques for turbulence measurements near the wall with specially devised, symmetrically bent Vshaped hot-wires, and investigated the structural similarity between momentum and heat transfer. The transport of fluctuation component heat and momentum near the wall was found to be very intermittent and strongly associated with the coherent turbulent structures.…”