Showing papers in "International Journal of Multiphase Flow in 2022"

TL;DR: In this article , the authors considered the simple case of two identical spherical particles with different relative orientations and particle distances and discussed the flow and fluid-particle heat-transfer characteristics by numerical simulation of supercritical water flowing around the fixed twoparticle system.

TL;DR: In this paper , the mass load ratio has a significant impact on droplet transport characteristics of gas-liquid two-phase jets, and the equilibrium position of droplet breakup and coalescence is calculated and found to be quite close to the nozzle exit.

TL;DR: Considering the effects of supercooling, gravity and volume expansion, a theoretical model of droplet freezing is developed in this paper , where a good agreement is found between the predicted results of freezing front radius and height and experiments for both hydrophilic and hydrophobic surfaces.

TL;DR: In this paper , the authors investigated the effect of surface wettability on the characteristics of nucleate pool boiling heat transfer under saturated conditions with water as working fluid and found that the overall boiling performance increases with enhanced surface wetability.

TL;DR: Wang et al. as mentioned in this paper adopted a new flow pattern classification method based on convolutional neural network (CNN) algorithms to achieve an automatic and objective identification of two-phase flow patterns.

TL;DR: In this article , a robust fractional-step lattice Boltzmann (FSLB) method is proposed to simulate the mass transfer phenomenon in incompressible multiphase flows with complex interfacial behavior and large density contrast.

TL;DR: In this article , the deformation and breakup dynamics of a compound ferrofluid droplet under shear flow and uniform magnetic field were numerically studied using a finite difference approach.

TL;DR: In this article, the deformation and breakup dynamics of a compound ferrofluid droplet under shear flow and uniform magnetic field were numerically studied using a finite difference approach.

TL;DR: In this article , the authors combine experimental observations and numerical simulations to perform a systematic study on the spreading of diverse viscous droplets on different wettable surfaces, ranging from hydrophilic to superhydrophobic.

TL;DR: In this article , the melting time is a decreasing function of electric Rayleigh number T, whereas, the maximum melt fraction is an increasing function of T. In the presence of an electric field, melting rate curve undergoes a deflection at a point that indicates the shift from natural convection dominated melting to electroconvection dominating melting.

TL;DR: In this paper , the authors focus on spherical, ellipsoidal and wobbling bubbles, which are typically encountered in air-water bubbly flows, and test three different methods based on Convolutional Neural Networks (CNN's) for the two former and two individual approaches that can be used subsequently to address the latter.

TL;DR: In this paper, an atypical, hemispherical capillary with inner diameter of 0.40mm and cap size of 6.20mm was employed as atomization nozzle, through which a steady cone-jet regime was confirmed versus suitable feeding liquid flow rate and electric potential.

TL;DR: In this paper , an atypical, hemispherical capillary with inner diameter of 0.40 mm and cap size of 6.20 mm was employed as atomization nozzle, through which a steady cone-jet regime was confirmed versus suitable feeding liquid flow rate and electric potential.

TL;DR: In this article , a visualization experiment was conducted to study the formation of droplets in the cross-junctions with various bifurcation angles, and a regime diagram was provided to characterize the droplet formation regimes.

TL;DR: In this paper , a geometrical volume of fluid (VOF)-based simulation method was used to model the dynamics of bubble collapse near a free surface and an oblique wall.

TL;DR: In this article , a comparison of four popular interface capturing methods (the volume of fluid (VOF), the standard level set (SLS), the accurate conservative level sets (ACLS), and the coupled level set and volume of fluids (CLSVOF) is presented.

TL;DR: In this paper , the drift velocity of single Taylor bubbles rising in stagnant Bingham plastic fluids in an inclined (4° ≤θ ≤ 45° from vertical) and fully eccentric 0.1524 × 0.1016-m (6 × 4-in) annulus was measured.

TL;DR: In this article , a volume-of-fluid (VOF) model is applied to numerically study the micro droplet impact on the structured superhydrophobic surface with a large range of impact velocity.

TL;DR: In this article, a volume-of-fluid (VOF) model is applied to numerically study the micro droplet impact on the structured superhydrophobic surface with a large range of impact velocity.

TL;DR: In this article , the authors present a systematic analysis of the bubble and liquid film dynamics corresponding to the propagation of long isolated gas bubbles, within rectangular capillary channels of cross-sectional aspect-ratio ranging from 1 to 8.

TL;DR: In this article , the authors investigated flow-induced vibrations for air-water two-phase passing through bends and found that the excitation forces of a twophase flow in a piping structure are highly dependent on the flow pattern and the two phase flow conditions upstream of the U-bend.

TL;DR: In this paper , the hairpin vortex packet in free wake flow during underwater launch is composed of a multistage hairpin and a low-speed streak region with a stream scale.

TL;DR: A review and perspectives on modeling high-speed disperse two-phase flows relevant to plume-surface interactions (PSI) are presented in this paper , with origins from 18th-century cannon fire experiments and new insights from particle-resolved numerical simulations.

TL;DR: In this paper , the effects of the turbulence in the first 2-5 mm of the spray were analyzed using a large eddy simulation (LES) to account for the effect of turbulence.

TL;DR: In this paper, the effects of bending angle, fluid velocity and viscosity, particle density on particle placement are analyzed based on the experimental and simulation results in a vertical, nonplanar slot with two 90° bends and a straight slot.

TL;DR: In this article , the effects of bending angle, fluid velocity and viscosity, particle density on particle placement are analyzed based on the experimental and simulation results in a vertical, nonplanar slot with two 90° bends and a straight slot.

TL;DR: Agarwal et al. as mentioned in this paper presented a numerical study of inception in the shear layer of a backward-facing step under the same conditions as experiments, and the velocity field was shown to be in good agreement with experiments.

TL;DR: In this article , a stereoscopic modification of the Brightness-Based Laser-Induced Fluorescence technique is developed to reconstruct the spatiotemporal evolution of waves on the film surface in 3D space, simultaneously with capturing instantaneous position, size, and three velocity components of the individual droplets and bubbles.

TL;DR: Agarwal et al. as mentioned in this paper presented a numerical study of inception in the shear layer of a backward-facing step under the same conditions as experiments, and the velocity field was shown to be in good agreement with experiments.

TL;DR: In this article , a new discrete element method and computational fluid dynamics coupling model is developed by combining the resolved and unresolved method to overcome the inaccuracy of fluid-particle drag force calculation and limitation on the size ratio of fine particles to fluid meshes, two aspects of improvements are made for sand production simulation over the existing models.