TY  - JOUR
ID  - discovery10187018
UR  - http://dx.doi.org/10.1016/j.ijheatfluidflow.2023.109262
N2  - In this work the transfer of a passive scalar (temperature) from a circular cylinder (radius R) in a planar Poiseuille flow (height
2h) is investigated with numerical simulations. The study varies the channel half-height to cylinder radius ? = h/R, the inertial
parameter ? = (UcR/?)(h/R)
2
and the Peclet number ´ Pe = UcR/?, where Uc is the midplane velocity, ? is the kinematic viscosity
and ? is the thermal diffusivity. There has been significant amount of work for ? ? 1, therefore this work will focus on the range,
0.03 ? ? ? 1, which has been chosen to show the effect of geometry and inertia on the flow features and the subsequent transfer.
As ? is decreased the Nusselt number increases and this behaviour is explained with velocity and temperature profiles.
Particularly for ? = 0.03, the local Nusselt number has a significant vertical variation (in the z-direction) when ? and Pe are
increased past certain values. For ? ? 1 and Pe > 103
this is due to the non-uniform incident flow present in the Hele-Shaw
cell while for ? = O(1), it is the secondary flow that is induced at the sides of the cylinder. For these latter flows the transfer in
the midplane is reduced relative to near the side walls, due to the triple turning point radial velocity profile adjacent to the circular
cylinder. For ? ? 1, the Nusselt number is only a function of Pe. However, for ? > 1, the secondary flow results in a slightly
increased Nusselt number.
AV  - public
SN  - 0142-727X
Y1  - 2024/02//
TI  - Forced convection past a circular cylinder in a planar Poiseuille flow
JF  - International Journal of Heat and Fluid Flow
PB  - Elsevier BV
A1  - Klettner, CA
KW  - Forced convection
KW  -  Hele-Shaw flow
VL  - 105
N1  - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions.
ER  -