Ozceyhan, Veysel; Gunes, Sibel; Buyukalaca, Orhan; … - In: Applied Energy 85 (2008) 10, pp. 988-1001
A numerical study was undertaken for investigating the heat transfer enhancement in a tube with the circular cross sectional rings. The rings were inserted near the tube wall. Five different spacings between the rings were considered as p = d/2, p = d, p = 3d/2, p = 2d...