Jove
Visualize
联系我们

相关概念视频

Typical Model Studies01:30

Typical Model Studies

337
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
337
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

121
Scaled hydraulic models of dam spillways provide a practical way to replicate and study the intricate flow dynamics of these structures. Often built to a 1:15 ratio, these models allow for observing critical water behavior, such as velocity distribution, flow patterns, and energy dissipation.
121
Modeling and Similitude01:12

Modeling and Similitude

245
Scaled modeling is a fundamental technique in engineering, enabling the study of large and complex systems by creating smaller, manageable replicas that recreate critical characteristics of the original. In hydrology and civil infrastructure, for example, scaled models of dams help analyze water flow, turbulence, and pressure. This method allows for accurate predictions of real-world behavior within a controlled environment, significantly reducing the cost and time involved in full-scale...
245
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

127
Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.
127
Rapidly Varying Flow01:24

Rapidly Varying Flow

49
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
49
Plane Potential Flows01:23

Plane Potential Flows

363
Plane potential flows simplify fluid motion by assuming the fluid to be irrotational and incompressible. These characteristics allow these flows to be described by a velocity potential function, ϕ, representing the flow speed in a given direction, and a stream function, ψ, that visualizes the flow path, both governed by Laplace's equation. These parameters help in estimating flow patterns, velocity distributions, and pressure fields around various hydraulic structures.
Uniform...
363

您也可能阅读

相关文章

通过共同作者、期刊和引用图与本文相关的文章。

排序
Same author

Optimisation of an nIR-Emitting Benzoporphyrin Pressure-Sensitive Paint Formulation.

Sensors (Basel, Switzerland)·2025
Same author

Adsorption properties of molecularly imprinted polymers designed for removal of smoke taint compounds from wine.

Food research international (Ottawa, Ont.)·2025
Same author

Wind Energy Harvesting with Vertically Aligned Piezoelectric Inverted Flags.

Sensors (Basel, Switzerland)·2023
Same author

Progress towards a Miniaturised PIV System.

Sensors (Basel, Switzerland)·2022
Same author

Non-Newtonian Droplet Generation in a Cross-Junction Microfluidic Channel.

Polymers·2021
Same author

A dynamics and stability framework for avian jumping take-off.

Royal Society open science·2018
JoVE
x logofacebook logolinkedin logoyoutube logo
关于 JoVE
概览领导团队博客JoVE 帮助中心
作者
出版流程编辑委员会范围与政策同行评审常见问题投稿
图书馆员
用户评价订阅访问资源图书馆顾问委员会常见问题
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experiments存档
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教师资源中心教师网站
使用条款与条件
隐私政策
政策

相关实验视频

Updated: May 31, 2025

Design and Optimization Strategies of a High-Performance Vented Box
14:23

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

1.1K

模拟围绕有限矩形镜的流量:网格,模型和子网格长度尺度的影响.

Xutong Zhang1, Maxime Savoie1, Mark K Quinn1

  • 1Department of Mechanical and Aerospace Engineering, The University of Manchester, Manchester M1 3PL, UK.

Entropy (Basel, Switzerland)
|January 24, 2025
PubMed
概括

这项研究比较了流在矩形镜周围的流模型. 延迟分离模拟 (DDES) 显示,在网格精细化方面,准确性提高了,超过了雷诺兹-平均纳维尔-斯托克斯 (RANS) 模型.

关键词:
这些都是DDES DDES.在RANS RANS中使用.外部空气动力学灰色区域是一个灰色区域.混合动力拉斯莱斯拉斯拉斯网格的精细化 网格的精细化小网子的长度尺度是一个小网子.

更多相关视频

In Vitro Model Integrating Substrate Stiffness and Flow to Study Endothelial Cell Responses
08:53

In Vitro Model Integrating Substrate Stiffness and Flow to Study Endothelial Cell Responses

Published on: July 19, 2024

427
Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
13:07

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

3.8K

相关实验视频

Last Updated: May 31, 2025

Design and Optimization Strategies of a High-Performance Vented Box
14:23

Design and Optimization Strategies of a High-Performance Vented Box

Published on: June 9, 2023

1.1K
In Vitro Model Integrating Substrate Stiffness and Flow to Study Endothelial Cell Responses
08:53

In Vitro Model Integrating Substrate Stiffness and Flow to Study Endothelial Cell Responses

Published on: July 19, 2024

427
Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
13:07

Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression

Published on: January 15, 2022

3.8K

科学领域:

  • 计算流体动力学 (CFD) 是一种计算流体动力学.
  • 流体力学 流体力学 流体力学
  • 流建模 流建模

背景情况:

  • 精确模拟悬崖周围的流场在工程中至关重要.
  • 雷诺兹-平均纳维尔-斯托克 (RANS) 和像延迟分离模拟 (DDES) 这样的尺度解析模拟是常见的方法.
  • 了解网格分辨率和流模型参数的影响对于可靠的预测至关重要.

研究的目的:

  • 调查流建模,网格分辨率和子网长度尺度对围绕有限矩形镜的流场预测的影响.
  • 评估各种雷诺兹-平均纳维尔-斯托克斯 (RANS) 和延迟分离模拟 (DDES) 方法的性能.
  • 评估不同子网长度尺度的有效性,包括剪切层适应 (SLA) 尺度.

主要方法:

  • 使用粒子图像速度计 (PIV) 进行实验调查.
  • 计算流体动力学 (CFD) 模拟使用十种不同的流模型 (RANS和DDES).
  • 六个网格分辨率和子网格长度尺度的系统变化.

主要成果:

  • 与RANS模型不同的是,DDES模拟显示,随着网状精细化,预测准确度不断提高.
  • 切削层适应的 (SLA) 子网长度尺度 (ΔSLA) 始终优于基于单元体积的尺度,特别是在中等分辨率下.
  • 流量分离和重新连接对网状网状精细化比唤醒分辨率更敏感.

结论:

  • 与RANS相比,DDES为分离的流量提供了优越的预测能力,特别是在适当的网格精细化下.
  • 建议使用SLA子网长度尺度来提高DDES的准确性,特别是在资源有限的工业环境中.
  • 泰勒微尺度可以作为在DDES模拟中用于网格大小测量的有用工具.