NUMERICAL STUDY OF FLUID FLOW AND HEAT TRANSFER CHARACTERISTICS OF AN IN-LINE CIRCULAR TUBE BANK FIN HEAT EXCHANGER WITH PUNCHED CURVE DELTA-WINGLET VORTEX GENERATORS

2017 ◽  
Author(s):  
Zhi-Min Lin ◽  
Cai-Ping Liu ◽  
Liang-Bi Wang
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Heat Exchanger ◽  
Circular Tube ◽  
Numerical Study ◽  
Vortex Generators ◽  
Heat Transfer Characteristics ◽  
Tube Bank ◽  
Flow And Heat Transfer ◽  
Delta Winglet

Numerical Study of Circular Tube inserted Arc Belt on Fluid Flow and Heat Transfer under Laminar Flow

2013 ◽  
Vol 561 ◽  
pp. 460-465
Author(s):  
Dong Hui Zhang ◽  
Jiao Gao
Keyword(s):  
Heat Transfer ◽  
Fluid Flow ◽  
Laminar Flow ◽  
Wall Temperature ◽  
Circular Tube ◽  
Numerical Study ◽  
Resistance Coefficient ◽  
Uniform Wall Temperature ◽  
Flow And Heat Transfer ◽  
Uniform Wall

The objective of this paper is to study the characteristic of a circular tube with a built-in arc belt on fluid flow and heat transfer in uniform wall temperature flows. Numerical simulations for hydrodynamically laminar flow was direct ran at Re between 600 and 1800. Preliminary results on velocity and temperature statistics for uniform wall temperature show that, arc belt can swirl the pipe fluid, so that the fluid at the center of the tube and the fluid of the boundary layer of the wall can mix fully, and plays the role of enhanced heat transfer, but also significantly increases the resistance of the fluid and makes the resistance coefficient of the enhanced tube greater than smooth tube. The combination property PEC is all above 1.5.

Sign in / Sign up

Export Citation Format

Share Document