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相关概念视频

Typical Model Studies01:30

Typical Model Studies

159
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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Application of Pascal's Law01:03

Application of Pascal's Law

7.8K
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
7.8K
Design Example: Creating a Hydraulic Model of a Dam Spillway01:21

Design Example: Creating a Hydraulic Model of a Dam Spillway

83
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.
83
Design Example: Deciding Thickness of Lubricating Fluid in a Shaft01:23

Design Example: Deciding Thickness of Lubricating Fluid in a Shaft

62
Effective lubrication between a rotating shaft and its bearing housing is essential in rotating machinery to minimize friction, wear, and energy loss. With carefully controlled thickness and viscosity, the lubricant layer prevents metal-to-metal contact, ensuring smooth operation.
To calculate the required thickness of the lubricant layer, the tangential velocity at the shaft's surface must first be determined. This velocity is calculated by converting the rotational speed to angular...
62
Fluid Pressure over Curved Plate of Constant Width01:12

Fluid Pressure over Curved Plate of Constant Width

1.1K
When a curved plate of constant width is submerged in a liquid, the pressure acting normal to the plate varies continuously both in magnitude and direction. Calculating the magnitude and location of the resultant force at a point is often challenging for such cases. One of the methods to determine the resultant force and its location involves separately calculating the horizontal and vertical components of the resultant force. This complex calculation can be simplified by representing the...
1.1K
Fluid Pressure01:14

Fluid Pressure

546
In mechanical engineering, fluid pressure plays a critical role in designing systems that utilize liquid flow, such as hydraulic systems, pumps, and valves. When designing these systems, engineers must ensure they can withstand the forces created by fluid pressure to avoid damage or failure.
According to Pascal's law, a fluid at rest will generate equal pressure in all directions. This pressure is measured as a force per unit area, and its magnitude depends on the fluid's specific...
546

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相关实验视频

Updated: May 12, 2025

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump
09:04

A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

Published on: June 1, 2022

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一个原型的流体结构合计算 自动启动-车辆系统.

Ying-Yu Ji1, Hai-Bin Lin2, Yu-Liang Zhang3

  • 1College of Mechanical Engineering, Quzhou University, Quzhou, 324000, China.

Scientific reports
|May 6, 2025
PubMed
概括

这项研究分析了自启动的压力波动及其对移动车架的影响. 较低的流速导致更大的框架应力和位移,随着流速的增加而减少.

关键词:
流体结构合器的流体结构.数字模拟 数字模拟压力波动的波动 压力波动这是一辆车.自动启动自动启动

更多相关视频

Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
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Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators

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Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator

Published on: October 28, 2022

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相关实验视频

Last Updated: May 12, 2025

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A Modeling and Simulation Method for Preliminary Design of an Electro-Variable Displacement Pump

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Modeling and Experimental Analysis of the Single-Shaft Coaxial Motor-Pump Assembly in Electrohydrostatic Actuators
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Design and Application of a Fault Detection Method Based on Adaptive Filters and Rotational Speed Estimation for an Electro-Hydrostatic Actuator
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科学领域:

  • 流体动力学 流体动力学
  • 机械工程 机械工程 机械工程
  • 对振动进行分析.

背景情况:

  • 移动车依赖于自启动,其内部压力波动可能会影响结构完整性.
  • 了解这些波动对于优化的性能和确保车架的寿命至关重要.

研究的目的:

  • 为了研究移动车中使用的自动启动的内部压力波动特性.
  • 分析这些压力波动在各种操作条件下对车框架的影响.

主要方法:

  • 针对移动车的自动启动进行了性能测试.
  • 使用FLUENT软件进行内部流量计算和压力波动分析.
  • 进行了流体结构合模拟,以研究框架位移和应力分布.

主要成果:

  • 在额定流量条件下,驱动器入口流量场在额定流量条件下是稳定的.
  • 在低流速下观察到显著的框架位移和应力.
  • 增加流速导致最大框架位移和应力逐渐减少.

结论:

  • 自动启动的性能与移动车的框架结构动力学有关.
  • 操作条件对内部压力和框架应力都有很大的影响.
  • 优化流速可以减轻车架上的结构应力.