Showing papers by "Richard J Goldstein published in 2019"
TL;DR: In this paper, high Rayleigh number thermal convection in tilted rectangular enclosures of different aspect ratios (1, 3, 6, and 10) and angles of inclination (0 °, 30 °, 60 °, 90 °, 120 °, and 150 °) was experimentally studied for 1.85 × 10 6 ⩽ Ra ⩾ 1.04 × 10 11 employing compressed gases.
13 citations
TL;DR: In this article, a moderate Rayleigh number thermal convection for horizontal rectangular enclosure is experimentally studied for 1.85 × 10 6 ⊽ Ra ⩽ 1.04 × 10 11, and the best fit for the investigated range of Rayleigh numbers is found to be Nu = 0.067 Ra 0.330 when a sidewall material of very low thermal conductivity is employed.
10 citations
TL;DR: In this article, numerical simulations of the local heat/mass transfer on a finite width surface within a turbulent boundary layer are compared to Large Eddy Simulations (LES) using naphthalene sublimation technique.
7 citations
TL;DR: In this article, the effect of sidewall conductance on Nusselt number for the Rayleigh-Bénard convection was examined by performing nearly identical sets of experiments with sidewalls made of three different materials.
Abstract:
The effect of sidewall conductance on Nusselt number for the Rayleigh-Bénard convection is examined by performing nearly identical sets of experiments with sidewalls made of three different materials. These experimental results are utilized to extrapolate and estimate the Nusselt number for an ideal zero-thermal-conductivity sidewall case, which is the case when the sidewalls are perfectly insulating. A semi-analytical model is proposed, based on the concept of extended surfaces, to compute the discrepancy in Nusselt number caused by the presence of finite thermal conductance of the sidewalls. The predictions obtained using this model are found to be in good agreement with the corresponding experimentally determined values.
5 citations
TL;DR: In this paper, the authors proposed simplified sets of correlating equations using results from prior numerical and experimental studies to calculate the heat transfer in buoyancy-driven convection from a heated horizontal cylinder.
4 citations