TY  - EJOU
AU  - Bhuiyan, Arafat A. 
AU  - Amin, M. Ruhul 
AU  - Naser, Jamal 
AU  - Islam, A. K. M. Sadrul 

TI  - EFFECTS OF GEOMETRIC PARAMETERS FOR WAVY FINNED-TUBE  HEAT EXCHANGER IN TURBULENT FLOW: A CFD MODELING
T2  - Frontiers in Heat and Mass Transfer

PY  - 2015
VL  - 6
IS  - 1
SN  - 2151-8629

AB  - In this study, the effects of thermal and hydraulic characteristics of wavy fin and tube heat exchanger are investigated. Simulation has been carried 
out by a commercial computational fluid dynamics code, ANSYS CFX12.0. The main objective of this study is to investigate the flow characteristics 
in turbulent flow. Results are predicted for the turbulent flow regime (2100≤Re≤7000) and compared with author’s previous work for laminar (400
≤Re≤1200) and transitional (1300≤Re≤2000) flow regime. Regarding turbulence, the k-ω model was used to predict the turbulent flow 
characteristics with 5% turbulence intensity. Predicted results were compared with the experimental data for the purpose of validation and the 
discrepancy is found within 10% in error range. Parametric study was conducted for different pitches and wavy angles. Flow characteristics obtained 
for the turbulent range is in line with the pattern observed in laminar and transitional ranges. This study demonstrates a clear understanding and 
relationship of among different flow ranges and the effects of different geometric parameters on the performance of heat exchanger.
KW  - <i>Wavy fin tube heat exchanger
KW  -  CFD modeling
KW  -  Friction factor
KW  -  Colburn factor
KW  -  Efficiency index
KW  -  Reynolds number
KW  -  Turbulent flow.</i>

DO  - 10.5098/hmt.6.5