RT Journal Article
ID 68b112b03b4749f4
A1 Çuhadaroğlu, Burhan
A1 Yiğit, Şahin
T1 A COMPUTATIONAL STUDY OF HEAT AND MASS TRANSFER FROM A CIRCULAR CYLINDER IN OSCILLATORY FLOW
JF Heat Transfer Research
JO HTR
YR 2017
FD 2017-11-10
VO 48
IS 17
SP 1581
OP 1598
K1 oscillating flow
K1 heat and mass transfer
K1 drying
K1 vortex shedding
K1 separation point
AB In the present study, heat and mass transfer in oscillating flow around a wet circular cylinder has been analyzed numerically. The oscillating flow is modeled by defining the vertical velocity component as v(t) = A sin (wt) at the inlet, and, hence, the oncoming flow is controlled by the amplitude and frequency of oscillation. The influence of nondimensional oscillating frequency on heat and mass transfer has been analyzed regarding the Nusselt and Sherwood numbers. The low-Re number k–ε turbulence model equations in conjunction with unsteady Reynolds-averaged Navier–Stokes equations have been
used in the computations. All the numerical simulations have been carried out by the ANSYS-Fluent code using the finite
volume method with nonuniform grid arrangement. Certain values of the dimensionless frequency of the oscillating flow, which is a measure of frequency of the oncoming flow to the vortex shedding frequency, provide a higher heat and mass transfer compared to nonoscillating flow. The position of the separation point on the circular cylinders has a dominant effect on heat and mass transfer as well as unsteady flow structure downstream. In practical applications, such as drying in the food industry, using the oscillating flow technique requires lower energy compared to oscillating solid bodies.
PB Begell House
LK https://www.dl.begellhouse.com/journals/46784ef93dddff27,54fca1a6497976c8,68b112b03b4749f4.html