An experimental and CFD modeling study of suspended droplets evaporation in buoyancy driven convection

Kinetic Modeling of the Ignition of Droplets of Fast Pyrolysis Bio-oil: Effect of Initial Diameter and Fuel Composition

“… 27 The predictions of a CFD model of droplet evaporation, in the same experimental apparatus discussed in this work, showed that the droplet is highly homogenized by liquid motions. 27 This effect is reproduced in the 1D model by adopting an enhancing factor, which is applied to the mass diffusion coefficients of species and to the thermal diffusion coefficient. The value of the enhancing factor was derived by a comparison of the results of 2D CFD simulations of bicomponent droplet evaporation 27 and the 1D model for the same mixture.…”

“… 27 This effect is reproduced in the 1D model by adopting an enhancing factor, which is applied to the mass diffusion coefficients of species and to the thermal diffusion coefficient. The value of the enhancing factor was derived by a comparison of the results of 2D CFD simulations of bicomponent droplet evaporation 27 and the 1D model for the same mixture. The comparison with CFD results is presented in the Supporting Information .…”

“…Since the experiments are performed at normal gravity, the coil induces a buoyant flow heating the droplet. 27 The heating produced by the coil is experimentally characterized using the thermocouple in an experiment performed without a suspended droplet. To model this device using a 1D approach, some simplifications are needed.…”

Substance transfer behavior controlled by droplet internal circulation

“…Micro-PIV (Particle Image Velocimetry) technology is the main experimental method used to explore the droplet's internal flow field [6][7][8][9][10][11][12][13]; and numerical methods include the CFD method [14][15][16][17][18][19], Lattice Boltzmann method [20,21], immersed-boundary [22], etc. ; and the research systems include absorption [23], extraction [24][25][26], mixing [27,28], reaction [29,30], condensation [31], evaporation [32,33], functional materials [34,35] and double emulsion droplet [36], etc. These reported studies reveal the existence of vortices within the droplet are crucial for enhancing mixing and improving the mass transfer across the interface.…”

Особенности Испарения Капли При Лучистом И Конвективном Нагреве

“…Закономерности испарения капель играют важную роль при решении ряда прикладных задач для теплотехнических систем и технологических процессов [1,2]. Различным аспектам нагрева и испарения отдельных капель и капельных систем посвящены многочисленные публикации, связанные с численным моделированием [3][4][5][6][7] и экспериментальными исследованиями [8][9][10][11][12][13][14] процесса испарения. Большинство экспериментальных результатов исследования скорости испарения капель жидкости получено при их нагреве в условиях кондуктивного, конвективного или комбинированного радиационноконвективного теплообмена [2,8,14].…”