TY - JOUR
T1 - Flow and Heat Transfer Characteristics of Cylindrical Structures with Corner Radius Variation
T2 - Tandem, SIDE-BY-SIDE, and Flow-Induced Vibration
AU - Adeeb, Ehsan
AU - Sohn, Chang Hyun
N1 - Publisher Copyright:
© 2019 Taylor & Francis Group, LLC.
PY - 2021
Y1 - 2021
N2 - This study investigates the effects of corner radius variation on thermohydraulic parameters around two equal isothermal square cylinders in tandem and side-by-side arrangements. In particular, a two-dimensional numerical study of unsteady laminar-forced convective heat transfer was conducted for a Reynolds number of 100. The Prandtl number was held constant at 0.71. The ratio of cylinder diameter over corner radius was varied from 0.0 to 0.5 with an increment of 0.1. The thermohydraulic parameters such as Strouhal number, drag coefficient, lift coefficient, and Nusselt number were discussed for various spacing ratios. In side-by-side arrangement, the Nusselt number increased for all corner radii with increasing distance between cylinders. However in tandem arrangement, as distance increased from the wake length of upstream circular cylinders, heat transfer was improved for both bodies. Moreover, the mean Nusselt number for the upstream cylinder approached a single cylinder value, while mean Nusselt number for the downstream cylinder was lower than that of a single cylinder. Furthermore, the flow induced vibration was coupled, which enhanced the heat transfer of a single square cylinder.
AB - This study investigates the effects of corner radius variation on thermohydraulic parameters around two equal isothermal square cylinders in tandem and side-by-side arrangements. In particular, a two-dimensional numerical study of unsteady laminar-forced convective heat transfer was conducted for a Reynolds number of 100. The Prandtl number was held constant at 0.71. The ratio of cylinder diameter over corner radius was varied from 0.0 to 0.5 with an increment of 0.1. The thermohydraulic parameters such as Strouhal number, drag coefficient, lift coefficient, and Nusselt number were discussed for various spacing ratios. In side-by-side arrangement, the Nusselt number increased for all corner radii with increasing distance between cylinders. However in tandem arrangement, as distance increased from the wake length of upstream circular cylinders, heat transfer was improved for both bodies. Moreover, the mean Nusselt number for the upstream cylinder approached a single cylinder value, while mean Nusselt number for the downstream cylinder was lower than that of a single cylinder. Furthermore, the flow induced vibration was coupled, which enhanced the heat transfer of a single square cylinder.
UR - http://www.scopus.com/inward/record.url?scp=85076356024&partnerID=8YFLogxK
U2 - 10.1080/01457632.2019.1699293
DO - 10.1080/01457632.2019.1699293
M3 - Article
AN - SCOPUS:85076356024
SN - 0145-7632
VL - 42
SP - 251
EP - 269
JO - Heat Transfer Engineering
JF - Heat Transfer Engineering
IS - 3-4
ER -