Numerical simulation of duct flow with fog droplets

Suryan, Abhilash; Lee, J. K.; Kim, D. S.; Kim, H. D.

doi:10.1007/s11630-010-0420-y

Cited by 8 publications

(2 citation statements)

References 2 publications

(1 reference statement)

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“…Suryan et al 22 performed a numerical simulation of droplet evaporation for describing the evaporative cooling process of tiny water droplets in a long air duct. They showed temperature and relative humidity effect on the evaporation rate.…”

Section: Introductionmentioning

confidence: 99%

Flow and thermal field in sessile droplet evaporation at various environmental conditions

2021

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Sessile droplets' evaporation is a complex process that involves fluid flow coupled with heat and mass transfer. In this study, mathematical modelling of sessile droplet evaporation on hydrophobic substrates is developed and simulations are carried out on COMSOL. The model results are validated with the data available in the literature. Postvalidation, the simulation of droplet evaporation is carried out on the various substrate hydrophobicities and various environmental conditions. For these conditions, contours are plotted for temperature, velocity, and mass concentration for the droplet and moist air domain. The result shows that Marangoni convection plays a very important role in droplet evaporation. A high rate of evaporation is observed at the droplet interface at low relative humidity and a large degree of subheating. The effect of air velocity on the evaporation rate is studied, however, its effect is very marginal as compared to relative humidity and degree of subheating. The heat flux at the three‐phase contact line is large for a smaller Prandtl number fluid. Overall, the evaporation rate increases with increasing the Prandtl number because it has a large value of Marangoni convection.

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Section: Introductionmentioning

confidence: 99%

Flow and thermal field in sessile droplet evaporation at various environmental conditions

2021

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“…There have been many studies regarding impingement of jets on an endplate [4] [5]. There have also been studies in the mixing of a confined jet in crossflow [6], studies investigating the effects of initial conditions on the characteristics of a jet [7] and on water droplets injected on an air stream [8]. The study of free shear jets has received more attention in the past decade, with several experimental studies being made in the field with specific reference to their application in gas turbine engines [9] [10] [11].…”

Section: Introductionmentioning

confidence: 99%

Computational Study on Aerodynamic and Thermal Characteristics of a Hot Jet in Parallel Flow

Das¹,

Jungio²,

Haritha³

et al. 2017

OJFD

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The study of the migration characteristics of turbulent jets has become relevant as they are used in a variety of engineering devices and are encountered in combustion, chemical processes, and processes involving cooling, mixing, and drying. In several applications, especially in the case of hot streaks in gas turbines, the knowledge of mixing phenomena becomes crucial from a design perspective. The purpose of this study is to look into the characteristics of a round hot jet in a parallel air flow. A jet of hot air injected through a nozzle into a flow of cold air has been considered. Numerical simulations were carried out with different hot jet temperatures and two different Reynold's numbers, thus aiming at understanding the effect of initial conditions on the mixing of the jet. The temperature profiles were studied at different sections downstream of the nozzle. The results are presented in non-dimensional form.

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