TY - JOUR
T1 - Smoothed particle hydrodynamics modeling of natural convection around a heated horizontal cylinder
T2 - A comparison with experiments
AU - Aragón, F.
AU - Guzmán, J. E.V.
AU - Alvarado-Rodríguez, C. E.
AU - Sigalotti, L. Di G.
AU - Carvajal-Mariscal, I.
AU - Klapp, J.
AU - Uribe-Ramírez, A. R.
N1 - Publisher Copyright:
Copyright © 2021 by ASME.
PY - 2021/4
Y1 - 2021/4
N2 - An experimental and numerical smoothed particle hydrodynamics (SPH) analysis was performed for the convective flow arising from a horizontal, thin cylindrical heat source enclosed in a glycerin-filled, slender enclosure at low Rayleigh numbers (1:18 ≤ Ra ≤ 242). Both the experiments and the SPH calculations were performed for positive (0:1 ≤ ΔT ≤ 10 K) and negative (-10 ≤ ΔT ≤ -0:1 K) temperature differences between the source and the surrounding fluid. In all cases, a pair of steady, counterrotating vortices is formed, accompanied by a plume of vertically ascending flow just above the source for ΔT > 0 and a vertically descending flow just below the source for ΔT < 0. The maximum flow velocities always occur within the ascending/descending plumes. The SPH predictions are found to match the experimental observations acceptably well with root-mean-square errors (RMSE) in the velocity profiles of the order of ∼10-5 m s-1. The fact that the SPH method is able to reveal the detailed features of the flow phenomenon demonstrates the correctness of the approach.
AB - An experimental and numerical smoothed particle hydrodynamics (SPH) analysis was performed for the convective flow arising from a horizontal, thin cylindrical heat source enclosed in a glycerin-filled, slender enclosure at low Rayleigh numbers (1:18 ≤ Ra ≤ 242). Both the experiments and the SPH calculations were performed for positive (0:1 ≤ ΔT ≤ 10 K) and negative (-10 ≤ ΔT ≤ -0:1 K) temperature differences between the source and the surrounding fluid. In all cases, a pair of steady, counterrotating vortices is formed, accompanied by a plume of vertically ascending flow just above the source for ΔT > 0 and a vertically descending flow just below the source for ΔT < 0. The maximum flow velocities always occur within the ascending/descending plumes. The SPH predictions are found to match the experimental observations acceptably well with root-mean-square errors (RMSE) in the velocity profiles of the order of ∼10-5 m s-1. The fact that the SPH method is able to reveal the detailed features of the flow phenomenon demonstrates the correctness of the approach.
UR - http://www.scopus.com/inward/record.url?scp=85107648255&partnerID=8YFLogxK
U2 - 10.1115/1.4049495
DO - 10.1115/1.4049495
M3 - Artículo
AN - SCOPUS:85107648255
SN - 0022-1481
VL - 143
JO - Journal of Heat Transfer
JF - Journal of Heat Transfer
IS - 4
M1 - 042601
ER -