Simulation of Primary Film Atomization Due to Kelvin–Helmholtz Instability

Kazimardanov, M.G.; Mingalev, Stanislav; Lubimova, T. P.; Gomzikov, L.Y.

doi:10.1134/s0021894418070064

Cited by 6 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The air core diameter in the swirl chamber decreases. Based on the Kelvin-Helmholtz instability [26], the high density and flow rate of the liquid phase result in irregular fluctuation due to the excitation effect of buoyancy on the gas-liquid interface. When t = 20 ms, the residual air in the swirl chamber flows to the outlet in the form of Taylor bubbles, and the gas-phase volume in the gasliquid mixing region gradually decreases.…”

Section: Droplet Average Particle Size D 32mentioning

confidence: 99%

Atomization and Mixing Characteristics of Swirl‐Flow Atomizers in the Refining Industry

Jin

et al. 2020

Chem Eng & Technol

View full text Add to dashboard Cite

Swirl atomizers are commonly used by refining and chemical companies to wash out ammonium chloride deposits. Experiments and numerical simulation were performed to investigate the atomization and mixing characteristics of swirl atomizers. The volume‐of‐fluid Lagrangian method was applied in the simulation, and its results were compared with experimental data to validate its accuracy. Results demonstrated that the entrainment effect of the airflow changed the atomization angle and coverage area of water. Momentum exchanges between water and airflow promoted the fracture of liquid membranes and formed small droplets.

show abstract

Section: Droplet Average Particle Size D 32mentioning

confidence: 99%

Atomization and Mixing Characteristics of Swirl‐Flow Atomizers in the Refining Industry

Jin

et al. 2020

Chem Eng & Technol

View full text Add to dashboard Cite

show abstract

“…Zhang in 2018 used a 2D DNS to present the effect of three fluid layers on KHI [17]. A parametric study of KHI behavior was also developed using 2D simulation results [18]. Recent simulations have provided high-resolution details of the interfacial instability development, the interaction between the interfacial wave and the gas stream, and the formation of the two-phase mixing layer [19].…”

Section: Introductionmentioning

confidence: 99%

Influence of Cross Perturbations on Turbulent Kelvin–Helmholtz Instability

Sementilli,

Zangeneh,

Chen

2024

Fluids

View full text Add to dashboard Cite

Kelvin–Helmholtz instability has been studied extensively in 2D. This study attempts to address the influence of turbulent flow and cross perturbation on the growth rate of the instability and the development of mixing layers in 3D by means of direct numerical simulation. Two perfect gases are considered to be working fluids moving as opposite streams, inducing shear instability at the interface between the fluids and resulting in Kelvin–Helmholtz instability. The results show that cross perturbation affects the instability by increasing the amplitude growth while adding turbulence has almost no effect on the amplitude growth. Furthermore, by increasing the turbulence intensity, a more distinct presence of the inner flow can be seen in the mixing layer of the two phases, and the presence of turbulence expands the range of high-frequency motion significantly due to turbulence structures. The results give a basis for which 3D Kelvin–Helmholtz phenomena should be further investigated using numerical simulation for predictive modeling, beyond the use of simplified 2D theoretical models.

show abstract