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Chapter 18

Finite Control Volume Analysis

有限 Cotrol 体积中的质量守恒
有限 Cotrol 体积中的质量守恒
The continuity equation is derived from the principle that the mass within a system remains constant. To analyze fluid movement, we observe the mass ...
在固定、不变形的控制体积中保持质量守恒
在固定、不变形的控制体积中保持质量守恒
The principle of conservation of mass states that, within a fixed control volume, any change in mass over time must be balanced by the flow of mass across ...
在移动、不变形的控制体积中保持质量守恒
在移动、不变形的控制体积中保持质量守恒
The conservation of mass is crucial in understanding the water flow in a rotating sprinkler system used for agricultural irrigation. The sprinkler ...
控制体积中的线性动量
控制体积中的线性动量
Newton's second law for a fluid system states that the rate of change of linear momentum in a flow with respect to time is equal to the sum of the ...
线性动量方程的应用
线性动量方程的应用
Water is flowing through a horizontal, U-shaped pipe bend. The cross-sectional area of the flow is 0.01 square meters, and the magnitude of the flow ...
动量矩方程
动量矩方程
The moment-of-momentum equation analyzes the torque produced by the rotating blades of a wind turbine. The moment-of-momentum equation is found by ...
控制体积中的能量守恒
控制体积中的能量守恒
The first law of thermodynamics states that the rate of change of total stored energy in a system equals the net rate of heat and work transferred into a ...
能量方程的应用
能量方程的应用
If the flow rate of a centrifugal pump that applies a pressure of 7500 joules per second to lift water from a reservoir at a lower level to a reservoir at ...
设计示例:水闸中的力
设计示例:水闸中的力
A sluice gate is a vertical barrier that controls water flow in a channel. To calculate the forces acting on a sluice gate, consider water flowing under ...
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