Chapter 20
Dimensional Analysis, Similitude, and Modeling
尺寸分析
Dimensional analysis helps simplify fluid flow problems by using dimensionless groups, reducing complex variables into simpler terms that are easier to ...
白金汉 Pi 定理
Consider the flow through a pipe, where key variables include the pipe's diameter D, fluid velocity V, density ρ, and viscosity μ.
To ...
确定 Pi 项
To determine Pi terms using the Buckingham Pi theorem, consider the example of analyzing lift force on an airplane wing.
Relevant variables here include ...
流体力学中的无量纲群
The dimensionless groups in fluid mechanics are ratios of physical quantities used to describe and analyze fluid behavior independently of units of ...
实验数据的相关性
A key use of dimensional analysis is to efficiently manage, interpret, and correlate experimental data.
Dimensional analysis alone cannot fully solve a ...
建模和模拟
A scaled model of a dam is tested in a controlled environment to observe how it will manage water flow, turbulence, and pressure.
This setup predicts the ...
典型模型研究
Typical model studies analyze scaled-down systems to predict fluid behavior, focusing on interactions with free surfaces and flow around immersed bodies.
...
设计示例:创建大坝溢洪道的水力模型
A hydraulic model of a dam spillway is often created by scaling down the design, typically to a 1:15 ratio, to replicate key flow characteristics such as ...
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