Gözenekli ortam yaklaşımı ile fin ve tüp tipi araç radyatörü sayısal modellemesi.

A common tool for the determination of the thermal characteristics of fin-and-tube heat exchangers is the experimental testing. However, experimental testing is not feasible considering the cost and the labor-time. One alternative to the experimental testing is the utilization of computational fluid dynamics (CFD) analysis to predict the thermal characteristics of these kinds of radiators. However, CFD models are also not suitable to be used as a design tool since the considerably amount of computational power and the computational time required due to the complex geometric structures of the fins. This issue becomes problematic when the large-scale heavy-duty radiators are considered. Computational thermal performance analysis based on porous medium approach of a vehicle radiator is studied in this M.Sc. thesis. Fin side of the radiator is modeled as porous medium. Fluid flow and heat transfer characteristics are extracted from the unit cell fin domains and implementation is made into complete radiator assembly. Forchiemmer model is used for the porous medium characterization. Utilization of this modeling leads the way to obtain thermal and hydrodynamic characteristics of fin-tube type vehicle radiators.M.S. - Master of Scienc