TY - GEN
T1 - Heat transfer enhancement with vortex generators
AU - Islam, Md
AU - Guangda, L.
AU - Ainane, S.
AU - Bojanampati, S.
N1 - Funding Information:
This work was supported by Abu Dhabi National Oil Company (ADNOC) and Khalifa University of Science & Technology of Abu Dhabi, UAE. This support is gratefully acknowledged.
Publisher Copyright:
Copyright © 2019 ASME.
PY - 2019
Y1 - 2019
N2 - In this research, heat transfer and pressure drop from a tube with vortex generators (VGs) insert are numerically investigated. The effects of heights, attack angles of VGs inside a tube on heat transfer and flow behavior are investigated. CFD simulations, with and without VGs insert, are done for an air flow range (Reynolds numbers 6000 to 33000) and for a constant heat flux on the tube model surface. Four VGs are fitted in a circular pattern on the inner surface of the tube. We studied the characteristics of the delta winglet VGs for different attack angles and blockage ratios. The Nusselt number and friction factor results show the influence of the VGs insert on heat transfer and frictional factor. The maximum Nusselt number increment (Nu/Nu0) was achieved to be 1.75 while the maximum friction factor increment (f/f0) was 3.21. In order to understand the flow behavior and different vortices, path lines released by the VGs surface and details of the vortices are also studied.
AB - In this research, heat transfer and pressure drop from a tube with vortex generators (VGs) insert are numerically investigated. The effects of heights, attack angles of VGs inside a tube on heat transfer and flow behavior are investigated. CFD simulations, with and without VGs insert, are done for an air flow range (Reynolds numbers 6000 to 33000) and for a constant heat flux on the tube model surface. Four VGs are fitted in a circular pattern on the inner surface of the tube. We studied the characteristics of the delta winglet VGs for different attack angles and blockage ratios. The Nusselt number and friction factor results show the influence of the VGs insert on heat transfer and frictional factor. The maximum Nusselt number increment (Nu/Nu0) was achieved to be 1.75 while the maximum friction factor increment (f/f0) was 3.21. In order to understand the flow behavior and different vortices, path lines released by the VGs surface and details of the vortices are also studied.
KW - CFD
KW - Heat exchanger
KW - Heat transfer enhancement
KW - Winglets vortex generator
UR - https://www.scopus.com/pages/publications/85079694514
U2 - 10.1115/GTINDIA2019-2560
DO - 10.1115/GTINDIA2019-2560
M3 - Conference contribution
AN - SCOPUS:85079694514
T3 - ASME 2019 Gas Turbine India Conference, GTINDIA 2019
BT - Compressors, Fans, and Pumps; Turbines; Heat Transfer; Structures and Dynamics
T2 - ASME 2019 Gas Turbine India Conference, GTINDIA 2019
Y2 - 5 December 2019 through 6 December 2019
ER -