Publisher's Note: “A unified theory for bubble dynamics” [Phys. Fluids <b>35</b>, 033323 (2023)]

Zhang, A-Man; Li, Shi-Min; Cui, Pu; Li, Shuai; Liu, Yunlong

doi:10.1063/5.0151631

Cited by 3 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, a unified theory for bubble dynamics is presented. [ 8 ] Sometimes, the gas bubbles have positive effects, such as improving the flotation recovery of minerals [ 9–11 ] and the betterment of heat transition in the ocean. [ 12,13 ] In other circumstances, the gas bubbles have negative impacts too, for example, the presence of underwater gases from oil fields, including oxygen, hydrogen sulfide, and carbon dioxide, could induce the corrosion of pipelines, [ 14,15 ] also, air bubbles cause problems in heating and microfluidic systems.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Capture, Collection, and Targeted Transfer of Underwater Gas Bubbles Using Janus‐Faced Carbon Cloth

et al. 2023

View full text Add to dashboard Cite

Recently, a straightforward method for the preparation of a Janus carbon cloth (Janus‐CC) is reported. The method relies on polydimethylsiloxane (PDMS) coating, followed by flame exposure of one face of the PDMS‐coated CC. The nonexposed to the flame face of the Janus‐CC is superhydrophobic, while the exposed to the flame face is superhydrophilic. Underwater, the superhydrophobic face shows superaerophilicity, while the supherhydophilic face shows superaerophobicity. A tethered gas bubble onto the superhydrophobic face has a paraboloid of revolution shape due to the cohesion force between the bubble and the gaseous film. Herein, the geometrical parameters of underwater tethered gas bubbles onto the Janus‐CC are obtained, and the tendency of Janus‐CC for capturing of bubbles is interpreted based on the derived Gibbs free‐energy change equation. It is experimentally observed that a small sited bubble moves toward the bigger one through the formed gaseous film, but this observation cannot be interpreted based on the classical Young–Laplace equation because here the smaller bubble has bigger curvature radius. Herein, a modified Young–Laplace equation is derived and applied for interpretation of the movement of a small bubble toward the bigger one. Also, the buoyancy force for a sited bubble on the gaseous film is discussed.

show abstract

Section: Introductionmentioning

confidence: 99%

Theoretical Investigation of Capture, Collection, and Targeted Transfer of Underwater Gas Bubbles Using Janus‐Faced Carbon Cloth

et al. 2023

View full text Add to dashboard Cite

show abstract

Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study

Huang,

Wang,

Huang

et al. 2023

Physics of Fluids

View full text Add to dashboard Cite

The collapse of a cavitation bubble near a rigid wall induces a vortex flow that spreads along the wall with a high shear rate, and an important factor affecting the behavior of the bubble dictated by its contact lines is the wettability of the wall. However, the mechanism for the dynamics of the vortex flow and wall shear stress remains to be settled. A numerical study conducted using the multiphase compressible InterFoam solver in the OpenFOAM framework is reported here. The wall wettability is modeled by the contact angle β and slip velocity uslip, and the results show that compared with a neutral surface, superhydrophobic and hydrophilic surfaces broaden the wall-vortex regimes. The main area of shear stress is enlarged both spatially and temporally in the case of a superhydrophobic surface, while it is extended spatially and shortened temporally for a hydrophilic surface. The wall-vortex flow produces a long-term wall shear stress with high magnitude, the maximum value of which is 174.41 kPa for the superhydrophobic surface, 131.82 kPa for the hydrophilic surface, and 103.12 kPa for the neutral surface. Integrating the shear stress over time and space shows that the slip velocity uslip is mainly responsible for affecting the distribution of the shear stress in the vortex flow induced by the collapse of a cavitation bubble. The present findings provide a good guide for ultrasonic cleaning in engineering applications.

show abstract

A strong stability gel foam for water shutoff during oil and gas reservoir development

Yang,

Xu,

Zhao

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

In view of the short effective period of conventional foam for water shutoff during oil and gas reservoir development, a strong stability gel foam system is proposed in this work. By comparing the foam properties of different foaming systems, the optimized formulation of foam system is “0.3% SDS (sodium dodecyl sulfate) + 0.4% HPAM (partially hydrolyzed polyacrylamide) + 0.3% SD-107 (organic chromium).” At 50 °C and 10 000 mg/l salinities, the volume of foam is basically unchanged after a short time of defoaming and finally remains above 70%, and the drainage half-life can reach 16 days. The polymer and crosslinker form a stable three-dimensional network structure on the Plateau boundary after foaming, which has good viscosity and viscoelasticity. The foam system has excellent temperature and salt resistance. It is appropriate for medium and low temperature shallow reservoirs. The foam system has a good plugging efficiency. It can effectively plug the fracture and improve the sweep volume, which has a good application prospect.

show abstract

Publisher's Note: “A unified theory for bubble dynamics” [Phys. Fluids 35, 033323 (2023)]

Cited by 3 publications

References 0 publications

Theoretical Investigation of Capture, Collection, and Targeted Transfer of Underwater Gas Bubbles Using Janus‐Faced Carbon Cloth

Theoretical Investigation of Capture, Collection, and Targeted Transfer of Underwater Gas Bubbles Using Janus‐Faced Carbon Cloth

Effects of wall wettability on vortex flows induced by collapses of cavitation bubbles: A numerical study

A strong stability gel foam for water shutoff during oil and gas reservoir development

Contact Info

Product

Resources

About