Flat plate correlations

The results have also been validated against the flat plate correlation

Nu(x)=0.0287 Re_x ^0.8 Pr ^0.4

for Nusselt number distribution in turbulent flow (Kays and Crawford, 1993). Figure 6.10 shows this comparison at Reynolds numbers of 13,400 and 32,100. The experimental data and the correlation match well, though with an offset. There is an associated difficulty in proper determination of the origin for the channel flow. The offset can be attributed to the error in the calculation of the streamwise distance.

Figure 6.10 Comparison of the local Nusselt number as a function of distance from LCT measurement with the flat plate correlation (Kays and Crawford, 1993) at Re=13400 and 32,100. The symbols correspond to the experimental data and the line represents best curve through the data.