The results of Nusselt number
increase with decreasing the nanoparticles diameter.
For case I, the fluid recirculation is reduced to the mid-height of the cavity, which gives a minimum local Nusselt number
at Y ~ 0.55 with two peaks on either sides of this position.
Figure 19 presents the effect of the rotating parameter A on the local Nusselt number
. The local Nusselt number
decreases with increase in A with the effect being more momentous towards the steady-state flow.
The influence of volume concentration ratios as a function of temperature on the Nusselt number
is shown in Figure 13(b).
. Nondimensional Nusselt number
[Nu.sub.S] = -([partial derivative][[theta].sub.S]/[partial derivative]R)[|.sub.R=1] is obtained from temperature profile (18) as
In heat transfer at a boundary (surface) within a fluid, the Nusselt number
(Nu) is the ratio of convective to conductive heat transfer across (normal to) the boundary.
Local Nusselt number
Nualong the cylinder surface was obtained using Eq.
The Churchill and Bernstein (1977) relation can be used to calculate the Nusselt number
across a separate cylinder for a wide range of Reynolds and Peclet numbers ([10.sup.2] < Re < [10.sup.7], Pe > 0.2):
Thus, the stream-wise velocity distributions at the module inlets (see Figure 9) and normalized pressure drop Figure 4 and module average Nusselt number
for each module (Table 2) confirm the existence of periodically fully developed flow downstream of the second module.
For the characterization of the heat transfer of the cabin and the TM, a Nusselt number
(Nu) is defined.
The numerical values for the skin friction, the local Nusselt number
are presented and examined.