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相关概念视频

General External Flow Characteristics01:26

General External Flow Characteristics

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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...
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Control Volume and System Representations01:16

Control Volume and System Representations

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Two key frameworks are employed to analyze mass, energy, and momentum transfer: the control volume approach and the system approach. These frameworks offer different perspectives, depending on whether the focus is on a specific region in space (control volume approach) or a defined mass of fluid (system approach).
The control volume approach considers a stationary region in space through which fluid flows. This region is bounded by a control surface.  For instance, in the case of water...
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Laminar Flow01:27

Laminar Flow

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Laminar flow represents a smooth, orderly fluid motion where particles move along parallel paths, resulting in minimal mixing between layers. Streamlined particle paths characterize this flow regime and occur under conditions where viscous forces dominate over inertial forces. The distinction between laminar, transitional, and turbulent flow is primarily determined by the Reynolds number, a dimensionless quantity calculated as:
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Laminar and Turbulent Flow01:07

Laminar and Turbulent Flow

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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...
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Typical Model Studies01:30

Typical Model Studies

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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.
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Steady, Laminar Flow in Circular Tubes01:23

Steady, Laminar Flow in Circular Tubes

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Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely axial,...
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相关实验视频

Updated: Feb 27, 2026

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature
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关于控制流量,流体结构相互作用和热传输的生物灵感策略.

Farid Ahmed1, Leonardo P Chamorro2,3,4,5

  • 1Department of Nuclear, Plasma & Radiological Engineering, University of Illinois Urbana-Champaign, Urbana, IL 61801, USA.

Biomimetics (Basel, Switzerland)
|February 26, 2026
PubMed
概括
此摘要是机器生成的。

生物灵感工程利用大自然设计的流体力学,结构动力学和热传输. 这次审查统一了流量控制,流体结构相互作用和热传输,揭示了高级应用的共享机制.

关键词:
生物启发工程是生物启发的工程.生物仿真学的生物仿真学.降低阻力减轻阻力减轻阻力能源采集 能源采集控制流量的流量控制器.流体结构的相互作用.换相换热传递的热传递方式

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科学领域:

  • *生物启发工程及其在流体力学,结构动力学和热传输中的应用.
  • * 综合流量控制,流体结构相互作用和相变热传递的跨学科审查.
  • * 专注于推动生物系统多功能性能的潜在物理机制.

背景情况:

  • *自然进化为解决复杂的工程挑战提供了精致的原则.
  • * 传统的方法通常独立处理空气动力学,水力动力学和热系统.
  • * 需要一个统一的框架,在各种应用中利用生物灵感策略.

研究的目的:

  • *为生物灵感热流体系统的最新进展提供机制驱动的审查.
  • *强调共同的物理原理,将流量控制,流体结构相互作用和热传递联系起来.
  • * 确定将生物战略转化为工程解决方案的挑战和机会.

主要方法:

  • *对最近的科学文献进行批判性叙事审查.
  • * 整合了跨三个互补领域的进展:流量控制,流体结构相互作用和相变热传递.
  • *强调潜在的物理机制,而不是对生物类型进行分类.

主要成果:

  • * 识别共享的物理原理:多尺度几何,毛细管/运输,符合规定的流量调整.
  • *展示这些原则如何在生物启发系统中实现多功能性能.
  • * 综合洞察力,揭示了热流体系统的统一概念框架.

结论:

  • * 生物启发工程为航空航天,能源和热管理提供了强大的多功能解决方案.
  • * 持续存在的挑战包括扩展,耐用性和模拟合的流体热结构相互作用.
  • *未来的机遇在于混合设计,数据驱动优化,多尺度建模和先进制造.