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This chapter covers the analysis of pressure fields in fluids at rest, examining the relationship between pressure, body forces like gravity, and the effects of hydrostatic equilibrium. It discusses the distinctions between gauge pressure and absolute pressure while introducing concepts such as hydrostatic pressure distribution and capillarity effects. The foundations laid here are crucial for understanding fluid behavior in both static and dynamic conditions.
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8.5.2
Control Volume In Capillary Problems
This section examines the principles of pressure distribution in fluids at rest within control volumes, specifically addressing the roles of shear stress, body forces, and the significance of gauge and vacuum pressure in various fluid dynamics scenarios.
References
ch4 part b.pdfClass Notes
Memorization
What we have learnt
Final Test
Revision Tests
Term: Pressure Field
Definition: A spatial distribution of pressure values within a fluid determined by various forces acting on the fluid.
Term: Hydrostatic Pressure
Definition: The pressure exerted by a fluid due to its weight when the fluid is at rest, varying linearly with depth.
Term: Gauge Pressure
Definition: Pressure measured relative to local atmospheric pressure; positive when above atmospheric pressure and negative (vacuum) when below.
Term: Capillarity
Definition: The ability of a liquid to flow in narrow spaces without external forces, influenced by surface tension and adhesion to surfaces.
Term: Control Volume
Definition: A specified region within space through which fluid flows for analyzing fluid motion, forces, and pressure distributions.