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  • Big Ideas: Fluid Dynamics - Differential Form of Momentum Conservation

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Author: Rajesh Bhaskaran, Cornell University

1. Introduction
2. Differential Form of Mass Conservation
3. Differential Form of Momentum Conservation
4. Integral Form of Conservation Equations

Pressure Force

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The net pressure force on an infinitesimal fluid particle in the y direction is proportional to:

Answer: 

Viscous Forces

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Select true or false.

The net viscous force on the infinitesimal fluid particle in the y direction is proportional to  Answer: true

Viscous Forces for Newtonian Fluid

Acceleration

Governing Equations in Differential Form

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Select the option that best describes the physical meaning of the following term in the momentum equation:
Answer: Acceleration of an infinitesimal particle in the y direction due to motion in the y direction.


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