Algorithm to Generate Liutex Core Lines Based on Forward Liutex Magnitude Gradient Lines DOI Creative Commons
Yifei Yu, Chaoqun Liu

IntechOpen eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 4, 2023

Vortex definition and identification are extremely important for the study of fluid dynamics research. Liutex is a newly proposed concept that correctly represents vortex. vector whose direction local rotation axis magnitude twice angular speed. To identify unique structure vortex, method known as Core Line has been developed, which displays rotational core However, original manual method, not practical real application, an automatic algorithm required usage. Xu et al. by selecting best line from group candidate lines, progress. In this chapter, another perspective to solve problem, new introduced based on forward gradient lines. Since lines have feature they advance maximums, route will still result in line, avoids process find line. This achieved some success Lambda vortex early boundary layer transition.

Language: Английский

Numerical simulation of diameter-to-depth ratio on hydrodynamics in four tank structures DOI

Chenxu Zhao,

Shupeng Du,

Wei Sun

et al.

Ocean Engineering, Journal Year: 2025, Volume and Issue: 330, P. 121262 - 121262

Published: April 20, 2025

Language: Английский

Citations

0
Vortex identification based on the Liutex method and its effect on fish passage upstream DOI

Chunying Shen,

Rui-guo Yang,

Xiaotao Shi

et al.

Journal of Hydrodynamics, Journal Year: 2024, Volume and Issue: 36(1), P. 130 - 141

Published: Feb. 1, 2024

Language: Английский

Citations

2
Numerical Simulation Study of an Artificial Percolation Riverbed and Its Hydraulic Characteristics under Different Reynolds Numbers DOI Open Access
Ming Yang, Yongye Li, Xihuan Sun

et al.

Water, Journal Year: 2024, Volume and Issue: 16(19), P. 2791 - 2791

Published: Sept. 30, 2024

The direct extraction of clear water from a sandy river is difficult task and can only be achieved through specific engineering measures. This paper proposes an artificial percolation riverbed structure for extracting clean rivers, using numerical simulation to study the flow field distribution characteristics under conditions. main conclusions are as follows: When vortex tube opening rate 1.4%, with or without hole has little influence on in riverbed, purpose while constructing helical field. axial velocity circumferential cross-section different Reynolds numbers show low-flow close center tube, high-flow side-wall area. average trend increasing then decreasing along axis direction sediment transport flume. mean toward flume both decreasing. At junction flume, there obvious pressure changes, changes drastically same horizontal line. Along bottom line at obviously greater than that mainly concentrated vicinity maximum value intensity generally occurs With increase number, overall trend, more complex. helps elucidate it provides reference basis future riverbeds rivers.

Language: Английский

Citations

1
Analysis of Two-Dimensional Hydraulic Characteristics of Vertical-Slot, Double-Pool Fishway Based on Fluent DOI Creative Commons

Shengzhe Qi,

Chenghua Fu,

Meiling Xie

et al.

Water, Journal Year: 2024, Volume and Issue: 16(12), P. 1695 - 1695

Published: June 14, 2024

Research shows that the novel vertical-slot, double-pool fishway can reduce flow velocity at vertical slots of fishway, enhance efficiency water in chambers, and increase fish passage area migratory corridor for fish. Utilizing Fluent, two-dimensional three-dimensional models were established, numerical simulation analysis was conducted on their hydraulic characteristics. The results indicate cross-section middle slot pool decreases horizontally from left to right increases vertically top bottom, with similar distribution patterns different lines. conditions characteristics surface, middle, bottom layers are similar, mainly characterized by planar, flow. error between trajectory main maximum value is within 10%. retains planar binary traditional vertical-slot fishways. be analogized uniformization simulation, providing support study its presenting a theoretical basis structural design construction

Language: Английский

Citations

0
Algorithm to Generate Liutex Core Lines Based on Forward Liutex Magnitude Gradient Lines DOI Creative Commons
Yifei Yu, Chaoqun Liu

IntechOpen eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: Dec. 4, 2023

Vortex definition and identification are extremely important for the study of fluid dynamics research. Liutex is a newly proposed concept that correctly represents vortex. vector whose direction local rotation axis magnitude twice angular speed. To identify unique structure vortex, method known as Core Line has been developed, which displays rotational core However, original manual method, not practical real application, an automatic algorithm required usage. Xu et al. by selecting best line from group candidate lines, progress. In this chapter, another perspective to solve problem, new introduced based on forward gradient lines. Since lines have feature they advance maximums, route will still result in line, avoids process find line. This achieved some success Lambda vortex early boundary layer transition.

Language: Английский

Citations

0