TY - JOUR
T1 - Numerical investigation of the effect of spanwise length and mesh density on flow around cylinder at Re = 3900 using LES model
AU - Ali, Haider
AU - Khan, Niaz Bahadur
AU - Jameel, Muhammad
AU - Khan, Azam
AU - Sajid, Muhammad
AU - Munir, Adnan
AU - El-Sayed Ahmed, A.
AU - Alharbi, Khalid Abdulkhaliq M.
AU - Galal, Ahmed M.
N1 - Publisher Copyright:
Copyright: © 2022 Ali et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2022/4
Y1 - 2022/4
N2 - Flow around circular cylinder has been extensively studied by researchers for several decades due to its wide range of engineering applications such as in heat exchangers, marine cables, high rise building, chimneys, and offshore structures. The lack of clear understanding of the unsteady flow dynamics in the wake of circular cylinder and high computational cost are still an area of high interest amongst the researchers. The aim of the current study is to investigate the effect of variation in spanwise length and grid resolution in the spanwise direction on the recirculation length, separation angle of wake flow by performing large eddy simulations (LES). This study is an extension to previous work by Khan, NB et al, 2019 in which the spanwise length is restricted to 4D only. In current study, the spanwise length is changed from 0.5D to 8D where D is diameter of cylinder and mesh resolution in the spanwise direction is changed from 1 to 80 elements in the present study. The recirculation length, separation angle and wake characteristics are analyzed in detail. It is concluded that after getting optimize spanwise length, mesh resolution in the spanwise direction is the only parameter contributing toward better result.
AB - Flow around circular cylinder has been extensively studied by researchers for several decades due to its wide range of engineering applications such as in heat exchangers, marine cables, high rise building, chimneys, and offshore structures. The lack of clear understanding of the unsteady flow dynamics in the wake of circular cylinder and high computational cost are still an area of high interest amongst the researchers. The aim of the current study is to investigate the effect of variation in spanwise length and grid resolution in the spanwise direction on the recirculation length, separation angle of wake flow by performing large eddy simulations (LES). This study is an extension to previous work by Khan, NB et al, 2019 in which the spanwise length is restricted to 4D only. In current study, the spanwise length is changed from 0.5D to 8D where D is diameter of cylinder and mesh resolution in the spanwise direction is changed from 1 to 80 elements in the present study. The recirculation length, separation angle and wake characteristics are analyzed in detail. It is concluded that after getting optimize spanwise length, mesh resolution in the spanwise direction is the only parameter contributing toward better result.
UR - http://www.scopus.com/inward/record.url?scp=85127903738&partnerID=8YFLogxK
U2 - 10.1371/journal.pone.0266065
DO - 10.1371/journal.pone.0266065
M3 - Article
C2 - 35395043
AN - SCOPUS:85127903738
SN - 1932-6203
VL - 17
JO - PLoS ONE
JF - PLoS ONE
IS - 4 April
M1 - e0266065
ER -