Projects

HEAT TRANSFER AND FLUID FLOW ANALYSIS

Numerical simulation is carried out to study the heat transfer and fluid flow in the plate-fin and tube heat exchangers with different shaped vortex generators mounted behind the tubes. Three different span angles α (α =30 0, 45 0 and 60 0) for three different shaped (delta winglet, aerofoil and semi circular) vortex generators are been investigated in detail for the Reynolds number ranging from 400 to 3000. Numerical simulation is performed by a computational fluid dynamics for the heat transfer and fluid flow for the temperature distribution and local flow structure.The comparisons of heat transfer enhancement with flat tube-fin element with and without vortex generator enhancement under different shaped vortex generators are carried out and optimized shape for heat transfer is been  obtained. The proposed heat transfer enhancement technique produces less pressure drop with high heat transfer. Smooth shaped vortex generators are very promising for enhanced heat exchangers



Tags :
4.25
Your rating: None Average: 4.3 (4 votes)

Posted by



Tue, 19/04/2011 - 21:29

Share

Collaborate