Results 1 to 10 of about 387 (196)

Flow regimes identification of air water counter current flow in vertical annulus using differential pressure signals and machine learning [PDF]

Scientific Reports
This study investigates the gas–liquid two-phase counter-current flow through a vertical annulus, a phenomenon prevalent across numerous industrial fields.
Feng Cao, Ruirong Dang, Bo Dang, Huifeng Zheng, Anzhao Ji, Zhanjun Chen, Jiaxuan Zhao, Zhimeng Sun   +7 more
doaj   +2 more sources

Investigation of drag models for simulation of gas-liquid two-phase flow systems [PDF]

Scientific Reports
The accurate prediction of gas-liquid two-phase flows in industrial systems relies on the careful selection of interfacial force models, particularly the drag force, which dominates momentum transport between phases.
Simon Yao Adzaklo, Kwame Sarkodie, Emmanuel Agyei, Stephen Yamoah, Nana Yaw Asiedu   +4 more
doaj   +2 more sources

Modeling of Bubbly Flow using a Combined Volume of Fluid and Discrete Bubble Model: Investigation on Interphase Forces [PDF]

Journal of Applied Fluid Mechanics, 2022
The gas-liquid two-phase flow with interfacial behaviors and bubble-liquid interactions is widely encountered in industrial processes such as that in gas-liquid reactors. The complicated phase structure makes it difficult to be modeled.
H. Yang, J. Xue, L. Li, X. Li, P. Lin, Z. Zhu   +5 more
doaj   +1 more source

Experimental investigation of the critical Reynolds number for bubbly two-phase flow [PDF]

INCAS Bulletin, 2023
The critical Reynolds number for dispersed bubbly two-phase flows, gas in liquid, was experimentally investigated. In this experiment, the gas was air and the liquid was water.
Marshall C. MCCRAY, Paul G. A. CIZMAS
doaj   +1 more source

State of the Art on Two-Phase Non-Miscible Liquid/Gas Flow Transport Analysis in Radial Centrifugal Pumps Part C: CFD Approaches with Emphasis on Improved Models

International Journal of Turbomachinery, Propulsion and Power, 2023
Predicting pump performance and ensuring operational reliability under two-phase conditions is a major goal of three-dimensional (3D) computational fluid dynamics (CFD) analysis of liquid/gas radial centrifugal pump flows.
Markus Hundshagen, Romuald Skoda
doaj   +1 more source

Bubble behavior in liquid-gas two-phase flow behind a cross-shaped obstacle in a vertical circular duct

Nuclear Science and Technology, 2021
Grid spacers installed in subchannels of fuel assemblies for nuclear reactors can promote heat transfer. However, the fluid velocity and bubble behavior are greatly affected as the cross-sectional area of the flow passage changes. Therefore, the void fraction distribution behind the obstacle that simulates the grid spacer shape simply was measured by ...
Takase K., Kawasaki G., Ueta K.
openaire   +2 more sources

Bubble Trajectory Tracking Based on ORB Algorithm

Image Analysis and Stereology, 2023
The system of gas-liquid two-phase bubbly flows is widely found in many industrial fields, such as nuclear energy, chemical, petroleum, and refrigeration.
Shujuan Wang, Shichao Lu, Jiaqi Liu, Miao Wang, Hongliang Luo, Jihong Shen, Shouxu Qiao, Yuntao Dai   +7 more
doaj   +1 more source

Bubble characteristics and turbulent dissipation rate in horizontal bubbly pipe flow

AIP Advances, 2021
The energy dissipation rate is a crucial parameter for system control and turbulence modeling but is difficult to quantify in gas–liquid two-phase flows. Little relevant information is available, especially in horizontal pipe flows.
Weiyang Zhao, Hang Wang, Ruidi Bai, Wangru Wei, Hongtao Wang   +4 more
doaj   +1 more source

Effect of bubble motion on local heat transfer around a tube across horizontal in-line and staggered tube bundles in bubbly and intermittent flows

Mechanical Engineering Journal, 2022
Cross-flow boiling in horizontal tube bundles occurs in kettle type evaporators. Convective heat transfer due to the motion of vapor bubbles is an important factor for boiling heat transfer in the evaporator under low heat flux conditions. To clarify the
Hideki MURAKAWA, Yuya MIYOSHI, Kyoya ARAKI, Katsumi SUGIMOTO, Hitoshi ASANO, Shizuka MAKIMOTO   +5 more
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Validation of two-fluid model for water hammer in elastic pipes

Applied and Computational Mechanics, 2022
In this article, the two-phase water hammer theoretical and numerical simulation are provided. A mathematical formulation is presented to describe the transient one-dimensional flow of bubbly gas-liquid mixtures without phase change in an horizontal pipe.
Ouzi M., Tamani M., Samri H., Bahrar B.
doaj   +1 more source