The Application of Numerical Modeling in Fluid Dynamics

A special issue of Water (ISSN 2073-4441). This special issue belongs to the section "Hydraulics and Hydrodynamics".

Deadline for manuscript submissions: closed (20 April 2024) | Viewed by 678

Special Issue Editor

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei, China
Interests: nonlinear seepage law; fluid–solid turbulence; fracture deformation; rough surface; newtonian fluids

Special Issue Information

Dear Colleagues,

The water-passing capacity of rock fractures is much stronger than that of rock matrices, making various major projects inseparable from the help of fractures, such as the development of shale gas, the exploitation of geothermal energy, and the treatment and disposal of nuclear waste. Seepage in rock fractures is the main cause of disasters in nature (landslides and collapses) and engineering (water inrush from foundation pits, slope instability, and cavern collapse). However, the anisotropy of fracture surface morphology and fracture deformation under the action of in situ stress make water flow in rock fractures complex.

This Special Issue mainly focuses on seepage in rock fractures. It primarily focuses on numerical simulation methods in the rock fractures; numerical simulation: physical phenomena that are difficult to observe by experimental means; and theoretical formula: scientific laws under specific conditions that can provide practice guidance. We also welcome papers focused on new computational simulation methods for various fluid dynamics; fluid–solid interaction simulation; macroscopic law or mesoscopic essence; mass transfer or heat transfer; saturated flow or unsaturated flow; single-phase flow or multi-phase flow; and a single fracture, bifurcated fractures, crossed fractures, or fracture network.

Dr. Haichun Ma
Guest Editor

Manuscript Submission Information

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Keywords

  • simulation methods
  • rock fractures
  • seepage
  • nonlinear
  • fluid–solid interaction

Published Papers (1 paper)

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Research

16 pages, 11484 KiB  
Article
Analysis of Two-Dimensional Hydraulic Characteristics of Vertical-Slot, Double-Pool Fishway Based on Fluent
by Shengzhe Qi, Chenghua Fu and Meiling Xie
Water 2024, 16(12), 1695; https://doi.org/10.3390/w16121695 - 14 Jun 2024
Viewed by 399
Abstract
Research shows that the novel vertical-slot, double-pool fishway can reduce the flow velocity at the vertical slots of the fishway, enhance the efficiency of the water flow in the chambers, and increase the fish passage area and migratory corridor for fish. Utilizing Fluent, [...] Read more.
Research shows that the novel vertical-slot, double-pool fishway can reduce the flow velocity at the vertical slots of the fishway, enhance the efficiency of the water flow in the chambers, and increase the fish passage area and migratory corridor for fish. Utilizing Fluent, two-dimensional and three-dimensional models of the novel fishway were established, and numerical simulation analysis was conducted on their hydraulic characteristics. The results indicate that the flow velocity at the cross-section of the middle vertical slot in the fishway pool decreases horizontally from left to right and increases vertically from top to bottom, with similar water flow distribution patterns on different vertical lines. The flow conditions and hydraulic characteristics of the surface, middle, and bottom layers in the pool are similar, mainly characterized by planar, two-dimensional flow. The error between the trajectory of the water flow in the main flow area and the maximum velocity value is within 10%. The novel vertical-slot, double-pool fishway retains the planar binary characteristics of traditional vertical-slot fishways. The results of the two-dimensional numerical simulation can be analogized to the vertical uniformization of the three-dimensional numerical simulation, providing support for the study of its two-dimensional numerical simulation of hydraulic characteristics and presenting a theoretical basis for the structural design and construction of fishways. Full article
(This article belongs to the Special Issue The Application of Numerical Modeling in Fluid Dynamics)
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