8. Pressure Field when Fluid is at Rest
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.
Enroll to start learning
You've not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Sections
Navigate through the learning materials and practice exercises.
-
8.1.6Hydrostatic Equations
This section discusses the hydrostatic equations relevant to understanding...
What we have learnt
- Pressure in fluids acts normal to the surface in a fluid at rest.
- Hydrostatic pressure changes linearly with depth in a fluid column.
- Capillary action results from the balance between surface tension and weight of the fluid.
Key Concepts
- -- Pressure Field
- A spatial distribution of pressure values within a fluid determined by various forces acting on the fluid.
- -- Hydrostatic Pressure
- The pressure exerted by a fluid due to its weight when the fluid is at rest, varying linearly with depth.
- -- Gauge Pressure
- Pressure measured relative to local atmospheric pressure; positive when above atmospheric pressure and negative (vacuum) when below.
- -- Capillarity
- The ability of a liquid to flow in narrow spaces without external forces, influenced by surface tension and adhesion to surfaces.
- -- Control Volume
- A specified region within space through which fluid flows for analyzing fluid motion, forces, and pressure distributions.
Additional Learning Materials
Supplementary resources to enhance your learning experience.