The Influence of the Punched Delta Wings on Flow Pattern and Heat Transfer Characteristic in a Fin-and-Oval-Tube Heat Exchanger

Table 1

Parameters of the computational domains.

Parameter	Symbol/unit	Value
Channel height	/mm	3.2
Computational domain width	/mm	12.7
Computational domain length	/mm	64.4
Semimajor diameter of oval tube	/mm	6.28
Semiminor diameter of oval tube	/mm	3.77
Longitudinal tube pitch	/mm	22
Spanwise tube pitch	/mm	25.4
Fin thickness	/mm	0.33
Fin pitch	/mm	3.2
Number of tube rows		3
Hydraulic diameter	/mm	3.63
Wall temperature	/K	300
Inlet temperatures of air	/K	340
Frontal velocity	/m s^−1	1.3–6.5