Jove
Visualize
お問い合わせ
JoVE
x logofacebook logolinkedin logoyoutube logo
JoVEについて
概要リーダーシップブログJoVEヘルプセンター
著者向け
出版プロセス編集委員会範囲と方針査読よくある質問投稿
図書館員向け
推薦の声購読アクセスリソース図書館諮問委員会よくある質問
研究
JoVE JournalMethods CollectionsJoVE Encyclopedia of Experimentsアーカイブ
教育
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab Manual教員リソースセンター教員サイト
利用規約
プライバシーポリシー
ポリシー

関連する概念動画

Irrotational Flow01:28

Irrotational Flow

Irrotational flow is characterized by fluid motion where particles do not rotate around their axes, resulting in zero vorticity. For a flow to be irrotational, the curl of the velocity field must be zero. This imposes specific conditions on velocity gradients. For instance, to maintain zero rotation about the z-axis, the gradient condition:
Turbulent Flow01:24

Turbulent Flow

Turbulent flow is characterized by unpredictable fluctuations in velocity and pressure, which result in a chaotic fluid movement distinct from the orderly patterns of laminar flow. While laminar flow is governed by smooth, parallel layers with minimal mixing, turbulent flow exhibits highly irregular, three-dimensional patterns. This behavior arises due to instabilities in the fluid's velocity profile, and amplifies as the flow velocity increases. Minor disturbances, known as turbulent spots,...
Couette Flow01:22

Couette Flow

Couette flow represents the flow of fluid between two parallel plates, with one plate fixed and the other moving with a constant velocity. This configuration allows for a simplified analysis using the Navier-Stokes equations, which govern fluid motion under conditions of viscosity and incompressibility. For Couette flow, the assumptions include a steady, laminar, incompressible flow with a zero-pressure gradient in the flow direction. This flow type is beneficial for understanding shear-driven...
Steady, Laminar Flow Between Parallel Plates01:17

Steady, Laminar Flow Between Parallel Plates

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.
Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

Fluid dynamics is the study of fluids in motion. Velocity vectors are often used to illustrate fluid motion in applications like meteorology. For example, wind—the fluid motion of air in the atmosphere—can be represented by vectors indicating the speed and direction of the wind at any given point on a map. Another method for representing fluid motion is a streamline. A streamline represents the path of a small volume of fluid as it flows. When the flow pattern changes with time, the streamlines...
First Law: Particles in Two-dimensional Equilibrium01:18

First Law: Particles in Two-dimensional Equilibrium

Recall that a particle in equilibrium is one for which the external forces are balanced. Static equilibrium involves objects at rest, and dynamic equilibrium involves objects in motion without acceleration; but it is important to remember that these conditions are relative. For instance, an object may be at rest when viewed from one frame of reference, but that same object would appear to be in motion when viewed by someone moving at a constant velocity.
Newton's first law tells us about the...

こちらも読む

関連記事

共著者、ジャーナル、引用グラフによってこの研究に関連する記事。

並び替え
Same author

Sparsity-based single-shot subwavelength coherent diffractive imaging.

Nature materials·2012
Same author

Large-scale magnetic field generation by randomly forced shearing waves.

Physical review letters·2012
Same author

Currents connecting communities: nearshore community similarity and ocean circulation.

Ecology·2011
Same author

Detection of Treponema pallidum, Haemophilus ducreyi, and Herpes Simplex Virus by Multiplex PCR.

Methods in molecular medicine·2011
Same author

Climate change and the integrity of science.

Science (New York, N.Y.)·2010
Same author

Generation of magnetic field by combined action of turbulence and shear.

Physical review letters·2008

関連する実験動画

Updated: Jul 11, 2026

Magnetically Induced Rotating Rayleigh-Taylor Instability
06:42

Magnetically Induced Rotating Rayleigh-Taylor Instability

Published on: March 3, 2017

アニゾトロピーと一貫した渦の構造は,惑星の乱れの中で存在する.

J C McWilliams, J B Weiss, I Yavneh

    Science (New York, N.Y.)
    |April 15, 1994
    PubMed
    まとめ

    流体ダイナミクスの高解像度シミュレーションは,同otropyの予測に挑戦します. 代わりに,惑星規模の流れは,一貫した渦に自己組織化し,不動の状態へと導きます.

    科学分野:

    • 流体力学 流体力学
    • 地質物理学 地質物理学とは地質物理学です.
    • 大気科学 大気科学
    • 海洋学 海洋学とは

    背景:

    • 惑星規模の流体力学は,地球の大気と海洋を理解するために極めて重要です.
    • 理論的予測は,そのような流れが同otropy を示すべきであることを示唆しています.
    • 以前のモデルでは,複雑な流体相互作用を単純化することが多かった.

    研究 の 目的:

    • 高解像度の数値シミュレーションを使用して,非強制的な,惑星規模の流体フローのダイナミクスを調査する.
    • これらのシステムにおける同otropyの長年の理論的予測をテストするために.
    • 大規模な流体の流れにおける自己組織化メカニズムを理解する.

    主な方法:

    • 高解像度の数値シミュレーションを用いた.
    • ブッシネスク流体に対して準地質学的な方程式を用いた.
    • 均等に回転し,安定した層状の環境をシミュレートした.

    主要な成果:

    • 予測されたイソトロピーの有意な不一致が観察されました.
    • 流れの自己組織化を特定し,コヘラント渦の大きな集団にしました.

    さらに関連する動画

    Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
    11:00

    Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

    Published on: July 19, 2016

    Preparation of Free-Surface Hyperbolic Water Vortices
    04:35

    Preparation of Free-Surface Hyperbolic Water Vortices

    Published on: July 28, 2023

    関連する実験動画

    Last Updated: Jul 11, 2026

    Magnetically Induced Rotating Rayleigh-Taylor Instability
    06:42

    Magnetically Induced Rotating Rayleigh-Taylor Instability

    Published on: March 3, 2017

    Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section
    11:00

    Experimental Investigation of Secondary Flow Structures Downstream of a Model Type IV Stent Failure in a 180° Curved Artery Test Section

    Published on: July 19, 2016

    Preparation of Free-Surface Hyperbolic Water Vortices
    04:35

    Preparation of Free-Surface Hyperbolic Water Vortices

    Published on: July 28, 2023

  • 混沌とした渦の相互作用が流れの進化を支配することを示した.

    • 結論:

    • 惑星規模の流体力学における同otropyの仮定は,挑戦されています.
    • 一貫した渦のダイナミクスは,地質学的流れの自己組織化において重要な役割を果たします.
    • これらの流れは,渦の相互作用によって駆動され,騒ぎのない最終状態へと進化します.