10. Viscous Fluid Flow (Contd.)
The chapter explores the concepts surrounding viscous fluid flow, specifically focusing on the Navier–Stokes equations and their applications. It clarifies the distinction between thermodynamic and mechanical pressures while discussing conditions under which they align. Furthermore, the narrative details simplifications for incompressible flow and the derivation of the Euler equation from the Navier–Stokes equations, culminating in the introduction of Bernoulli's equation for steady incompressible flow.
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Sections
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What we have learnt
- The Navier–Stokes equations describe general motion in viscous fluids.
- Mechanical pressure differs from thermodynamic pressure, except under certain conditions.
- Incompressible flow leads to simpler forms of the Navier–Stokes equations and results in Euler's equation.
Key Concepts
- -- Navier–Stokes Equations
- A set of equations describing the motion of viscous fluid substances.
- -- Mechanical Pressure
- A pressure derived from the sum of normal stresses in a fluid, generally different from thermodynamic pressure.
- -- Incompressible Flow
- A flow where the fluid density remains constant, leading to divergence of velocity being zero.
- -- Euler Equation
- An equation derived from Navier–Stokes equations under the assumption of inviscid flow, representing motion in ideal fluids.
- -- Bernoulli's Equation
- An equation representing the conservation of energy in a flowing fluid, applicable to steady incompressible flow.
Additional Learning Materials
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