Methodology and performance of annular fluid enhanced self-excited oscillation in pulsed submerged waterjet for coal mine engineering

Liu, Yanwei; Jia, Haojie; Zuo, Weiqin; Chang, Ping; Han, Hongkai; Long, Liqun; Miao, Jian

doi:10.1016/j.powtec.2024.119401

Powder Technology

2024

DOI: 10.1016/j.powtec.2024.119401

|View full text |Cite

Methodology and performance of annular fluid enhanced self-excited oscillation in pulsed submerged waterjet for coal mine engineering

Yanwei Liu,

Haojie Jia,

Weiqin Zuo

et al.

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article4

Relationship

Self Cite0

Independent4

Authors

Journals

Cited by 4 publications

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Experimental Study on Multiscale Pore Structure Evolution and Methane Desorption Characteristics of Coal with Controlled Electrical Pulse Treatment

Yan,

Zhang,

Yang

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

Experimental Study on Multiscale Pore Structure Evolution and Methane Desorption Characteristics of Coal with Controlled Electrical Pulse Treatment

Yan,

Zhang,

Yang

et al. 2024

Energy Fuels

View full text Add to dashboard Cite

Decay characteristics and application predictions of far-field high-pressure water: Jet velocity and volume fraction

Jiang,

Yin,

Liu

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

In the field of deep mining engineering, high-pressure water jets progress toward larger diameters and higher velocities to enhance their impact performance. Understanding the decay characteristics as well as their implications remains challenging. In this article, the jet spread coefficients (k and c) within the empirical model of jet diffusion are determined by series of lab experiments, while simulations using the Eulerian method are conducted by implementing the modified diffusion model as a subroutine. The effects of spread coefficient, jet velocity, and nozzle diameter on the degree of jet decay are studied. The results show that the jet spread coefficient increases logarithmically with increasing jet velocity. With the increase in nozzle diameter, the growth of spread coefficient k of the jet gradually decreases. Increasing the nozzle diameter and spread coefficient k can effectively reduce the decay degree of jet axial velocity and water volume fraction. Notably, although the increase in jet velocity does not impact the decay of axial velocity, it exacerbates the decay of water volume fraction. Similarly, the increase in spread coefficient c has no effect on the reduction of water volume fraction, but it intensifies the decay of jet axial velocity. The combined effects of increased jet velocity and jet spread coefficient weaken the degree of jet decay. The research presents a comprehensive and innovative study of jet diffusion and attenuation phenomena. These insights not only expand the application of jet diffusion models but also provide theoretical support for understanding and optimizing the application of jets.

show abstract

Research on Helmholtz self-excited oscillating jets enhanced heat transfer in horizontal tubes

Hou,

Ou,

Chen

et al. 2024

Physics of Fluids

View full text Add to dashboard Cite

The self-excited oscillating jets have several advantages, including simple structures, environmental friendliness, and high efficiency. It has become a prominent research focus in the heat transfer field. This study focuses on analyzing the influence of the self-excited oscillation chamber structural parameters on the interaction between coherent structures and heat transfer. Combining the heat transfer enhancement of the pulsating backflow vortex with boundary layer theory, a self-excited oscillation horizontal tube model is constructed. The Large Eddy Simulation (LES) method simulates the self-excited oscillation in horizontal tubes. The heat transfer and flow resistance mechanisms in the tube are investigated. The results indicate that backflow vortices in the downstream pipe alternate near the shear layer. As the flow approaches the oscillator outlet, discrete vortices decrease, the pulsation effect weakens, the temperature gradient diminishes in the tube, and the heat transfer boundary layer thickens. The pressure drops and resistance coefficient in the horizontal tubes exhibit periodic pulsations. The optimal structural parameters of the Helmholtz horizontal tubes are obtained through comprehensive analysis: diameter ratio of the chamber to the upstream pipe DT/d1 = 9.5, ratio of the chamber length to the upstream pipe diameter LT/d1 = 4.3, collision wall angle α = 100°. The relationship between the structural parameters of the oscillator and the heat transfer factors has been established, guiding the application of the Helmholtz oscillating jets in the field of enhanced heat transfer.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Methodology and performance of annular fluid enhanced self-excited oscillation in pulsed submerged waterjet for coal mine engineering

Cited by 4 publications

References 31 publications

Experimental Study on Multiscale Pore Structure Evolution and Methane Desorption Characteristics of Coal with Controlled Electrical Pulse Treatment

Experimental Study on Multiscale Pore Structure Evolution and Methane Desorption Characteristics of Coal with Controlled Electrical Pulse Treatment

Decay characteristics and application predictions of far-field high-pressure water: Jet velocity and volume fraction

Research on Helmholtz self-excited oscillating jets enhanced heat transfer in horizontal tubes

Contact Info

Product

Resources

About