Jove
Visualize
联系我们
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

相关概念视频

Turbulent Flow: Problem Solving01:09

Turbulent Flow: Problem Solving

161
Carbonation is a process used to dissolve carbon dioxide gas in a liquid, commonly used in the production of carbonated beverages. Achieving efficient carbonation requires careful control of temperature, pressure, and flow conditions. By adjusting these parameters, carbonation efficiency can be maximized, producing a higher concentration of CO2 in the liquid.
Temperature is a key factor in CO2 solubility. In this case, the CO2 gas and the liquid are cooled to 20°C. Lower temperatures...
161
Laminar Flow: Problem Solving01:24

Laminar Flow: Problem Solving

222
Laminar flow occurs when a fluid moves smoothly in parallel layers with minimal mixing and turbulence. In fluid mechanics, ensuring laminar flow within a pipe is essential for precise control of flow characteristics, especially in engineering applications. The key factor in determining whether flow remains laminar is the Reynolds number, a dimensionless quantity that depends on the fluid's velocity, density, viscosity, and the pipe's diameter. A Reynolds number of 2100 or lower...
222
Lift01:23

Lift

197
Lift is a fundamental aerodynamic force that acts perpendicular to the direction of airflow. It plays a central role in achieving and sustaining flight and in stabilizing various vehicles. Lift primarily originates from pressure differences created across surfaces, such as an airfoil. A lower pressure region forms above the wing, while a higher pressure region forms below it, generating an upward force. This differential results from the shape and orientation of the airfoil, enabling the wing...
197
Bernoulli's Equation: Problem Solving01:16

Bernoulli's Equation: Problem Solving

1.4K
A Venturi meter is essential for measuring fluid flow rates in pipelines. It utilizes the relationship between fluid velocity and pressure described by Bernoulli's equation. When installed in a sewage system, the Venturi meter accurately determines the wastewater flow rate by measuring pressure differences.
The first step is to compute the cross-sectional areas of the pipe and the Venturi throat to analyze the pressure difference indicated by the pressure gauge. Next, the continuity...
1.4K
Angle of Twist: Problem Solving01:13

Angle of Twist: Problem Solving

352
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the...
352
Bernoulli's Equation for Flow Along a Streamline01:30

Bernoulli's Equation for Flow Along a Streamline

1.0K
Bernoulli's equation relates the energy conservation in a fluid moving along a streamline. The equation applies to incompressible and inviscid fluids under steady flow. For such a flow, Newton's second law is applied to a small fluid element, which experiences forces due to pressure differences, gravity, and velocity variations. The force balance leads to the following form of Bernoulli's equation:
1.0K

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 journal

Effects of audio guided loving kindness meditation on psychological well being and laboratory stress responsiveness in healthy university students.

Scientific reports·2026
Same journal

Adaptive cognitive driven cross modal network for few shot fine grained recognition.

Scientific reports·2026
Same journal

Tegoprazan-based dual therapy versus bismuth-containing quadruple therapy for Helicobacter pylori eradication: a prospective, multicenter, open-label, non-inferiority, randomized controlled trial.

Scientific reports·2026
Same journal

Primary tumor resection prior to peptide receptor radionuclide therapy is associated with improved survival in metastatic gastroenteropancreatic neuroendocrine tumors: a systematic review and meta-analysis.

Scientific reports·2026
Same journal

Sleep duration among medical students and its association with bronchial asthma, anxiety, and depression.

Scientific reports·2026
Same journal

MGMT deficiency augments STING-mediated inflammatory responses accompanied by metabolic alterations in macrophages.

Scientific reports·2026

相关实验视频

Updated: Jul 26, 2025

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

10.8K

一种强化学习方法来优化气翼形状.

Thomas P Dussauge1,2, Woong Je Sung3,4, Olivia J Pinon Fischer3,4

  • 1Aerospace Systems Design Laboratory (ASDL), School of Aerospace Engineering, Georgia Institute of Technology, Atlanta, Georgia, 30332, USA. thomas.d.0702@gmail.com.

Scientific reports
|June 16, 2023
PubMed
概括

深度增强学习 (DRL) 通过将设计视为马尔科夫决策过程,有效地优化气形状. 这种数据驱动的方法可以在更少的代过程中产生高性能气形,超过传统技术的性能.

更多相关视频

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
10:36

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Published on: November 3, 2023

1.6K
Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging
06:20

Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging

Published on: April 28, 2022

2.2K

相关实验视频

Last Updated: Jul 26, 2025

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods
09:17

Experimental Investigation of the Flow Structure over a Delta Wing Via Flow Visualization Methods

Published on: April 23, 2018

10.8K
Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption
10:36

Author Spotlight: Optimization of Airflow Velocities in Battery Cooling Systems for Enhanced Thermal Performance and Reduced Energy Consumption

Published on: November 3, 2023

1.6K
Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging
06:20

Flapping Soft Fin Deformation Modeling using Planar Laser-Induced Fluorescence Imaging

Published on: April 28, 2022

2.2K

科学领域:

  • 航空航天工程 航空航天工程
  • 计算流体动力学的流体动力学.
  • 人工智能的人工智能

背景情况:

  • 空翼形状的优化对于空气动力学设计至关重要,但由于流体力学复杂性和高维设计空间,它面临着挑战.
  • 传统的基于梯度和无梯度的优化方法是数据低效和计算昂贵的,特别是当与计算流体动力学 (CFD) 集成时.
  • 监督学习方法提供了改进,但由于需要用户提供的数据而受到限制.

研究的目的:

  • 调查深度强化学习 (DRL) 方法,以优化气翼形状.
  • 开发一种数据驱动的方法,克服现有的优化技术的局限性.
  • 展示RL在制造高性能气体方面具有的生成能力.

主要方法:

  • 制定了作为马尔科夫决策过程 (MDP) 的气形设计.
  • 开发了一个定制的强化学习 (RL) 环境,用于代的气翼形状修改和空气动力学性能评估.
  • 采用DRL代理来优化空气动力学指标,如升力与阻力比 (L/D),升力系数 (Cl) 和阻力系数 (Cd).

主要成果:

  • DRL代理在有限数量的学习代中成功生成了高性能气形.
  • 学习的决策策略产生了与现有文献中发现的形状非常相似的气形状.
  • 与传统方法相比,该方法在数据效率和计算成本方面取得了显著的改进.

结论:

  • 深度增强学习 (DRL) 是一个相关和有效的方法来优化气翼形状.
  • DRL方法为空气动力学中传统的优化技术提供了一个数据驱动的,生成的替代方案.
  • 这项研究成功地将DRL应用于基于物理的复杂问题,为未来的空气动力学设计应用铺平了道路.