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

Drag01:23

Drag

369
Drag is a resistive force opposing an object’s motion through a fluid, resulting from surface pressure and shear forces. It comprises two components: a perpendicular one from pressure and a tangential one from shear stress. Accurate drag calculations use pressure and wall shear stress distributions, often determined through Computational Fluid Dynamics (CFD) or wind tunnel testing. The drag coefficient, a dimensionless measure, depends on factors like shape, Reynolds number, Mach number,...
369
General External Flow Characteristics01:26

General External Flow Characteristics

513
The study of external flow is essential for creating structures and objects that interact efficiently and safely with moving fluids, such as air or water. When a body is immersed in a flowing fluid, it experiences two primary forces: drag, which opposes motion along the flow direction, and lift, which acts perpendicular to the flow. The shape, size, and orientation of the object influence these forces.Streamlined and Blunt Bodies in External FlowObjects in fluid flow are classified as...
513
Drag Force and Terminal Speed01:18

Drag Force and Terminal Speed

3.3K
An interesting force in everyday life is the force of drag on an object when it is moving in a fluid. Like friction, the drag force always opposes the motion of an object. Unlike simple friction, the drag force is proportional to some function of the velocity of the object in that fluid. This functionality is complicated and depends upon the shape of the object, its size, its velocity, and the fluid it is in. For most large objects, such as cyclists, cars, and baseballs, that are not moving too...
3.3K
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

350
Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
350
Lift01:23

Lift

462
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...
462
Design of Transmission Shafts01:16

Design of Transmission Shafts

731
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...
731

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

Hydrodynamic Performance Enhancement of Torpedo-Shaped Underwater Gliders Using Numerical Techniques.

F1000Research·2025
Same author

Aerodynamic performance enhancement of centrifugal compressor using numerical techniques.

F1000Research·2025
関連記事をすべて見る

関連する実験動画

Updated: Jan 13, 2026

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches
10:58

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches

Published on: July 22, 2025

596

商用車のCFDベース設計最適化による空力抵抗低減

Madhav S Prabhu1, Sudheendra Prabhu K1, Amar A Murthy2

  • 1Department of Aeronautical & Automobile Engineering, Manipal Institute of Technology (MIT), Manipal Academy of Higher Education (MAHE), Manipal, Udupi, Karnataka, 576104, India.

F1000Research
|January 12, 2026
PubMed
まとめ

トラックの空力特性の改善は、燃料消費量を大幅に削減できます。この研究では、商用車モデルを最適化し、設計変更により空力抵抗を18%削減しました。

キーワード:
空力特性CFD抗力流れ制御技術最適化トラック

さらに関連する動画

Curtain Flow Column: Optimization of Efficiency and Sensitivity
06:44

Curtain Flow Column: Optimization of Efficiency and Sensitivity

Published on: June 12, 2016

6.9K
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

1.5K

関連する実験動画

Last Updated: Jan 13, 2026

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches
10:58

Parametric Optimization Design Method for Friction Plates of Hydro-Viscous Clutches

Published on: July 22, 2025

596
Curtain Flow Column: Optimization of Efficiency and Sensitivity
06:44

Curtain Flow Column: Optimization of Efficiency and Sensitivity

Published on: June 12, 2016

6.9K
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

1.5K

科学分野:

  • 工学
  • 流体力学
  • 自動車設計

背景:

  • 商用車、特にトラックの空力特性は複雑であり、乗用車と比較して見過ごされがちです。
  • トラックは、そのブロークンボディ形状により大きな抗力を受け、年間の燃料消費量に影響を与えます。
  • 多くのトラックには、抗力蓄積につながるフロントウィンドデフレクターのような空力機能が欠けています。

研究 の 目的:

  • 設計最適化による商用車の抗力低減。
  • 計算流体力学（CFD）を用いたトラックの空力効率の向上。
  • 商用車の抗力低減技術に関する洞察の提供。

主な方法:

  • 既存の抗力低減戦略を理解するために、体系的な文献レビューを実施しました。
  • 縮小スケールのトラックモデルに対し、ANSYS Fluentを用いた包括的な3D気流解析を実施しました。
  • ベースラインのトラックモデルに反復的な幾何学的最適化を適用しました。

主要な成果:

  • 様々な乱流モデルを用いた流れ解析を実施し、文献データと比較検証しました。
  • 複数の設計最適化モデルをテストし、ベースラインと比較しました。
  • 効果的な設計変更により、空力抵抗を18%削減しました。

結論:

  • 最適化されたトラックモデルの詳細な空力結果を示します。
  • 調査結果は、エンジニアや研究者が商用車の空力特性を理解するのに役立ちます。
  • この研究は、トラックの空力効率の向上に貢献します。