Computation of heat-transfer performance via CFD
DOI 10.1615/hedhme.a.000103
1.4 NUMERICAL SOLUTION PROCEDURES
1.4.2 Computation of Heat Transfer Performance via Computational Fluid Dynamic
E. O. Pankova and D. Brian Spalding
A. INTRODUCTION
The purpose of Section 103 is to apply computational fluid dynamics (CFD) to problems in which the flow pattern is presumed to be known. Some of these were dealt with analytically in Section 1.2 and Section 1.3 in conjunction with further presumptions concerning uniformity of fluid properties, uniformity of heat transfer coefficient, and independence of time. It will be shown that the CFD solutions agree with the analytical ones when the grid is sufficiently fine.
Then, each of the last-mentioned presumptions will be removed one by one. Thus, it will be demonstrated that CFD can take into account effects that arise in practice but that the analytical methods are forced to neglect. In addition, some of the effects of the presence of baffles and the existence of tube-baffle-clearance leakages will be demonstrated.
B. COUNTERFLOW
(a) Computational Model
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