Fluids and Fluid Systems Flashcards Preview

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Flashcards in Fluids and Fluid Systems Deck (9)
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1
Q

What is Viscosity?

A

Fluid resistance to flow

2
Q

What is the dynamic and kinematic viscosity? Units?

A

Dynamic=Forcedistance/AreaV (Poise,0.1 Pa.s)

Kinematic=dynamic/density (Stakes, 1 cm^2/s)

3
Q

What is Vapour pressure?

A

Defines volatility. The pressure created when a liquid partially evaporates in a container that expands. In Pa.

4
Q

What is the Flash point?

A

The lowest temp. under specific conditions when a fluid evaporates enough to flash/burn if a flame to ignites

5
Q

What is the auto-ignition point?

A

The lowest temp. when a flame is generated in presence of air, with no external ignition

6
Q

What is Compressibility?

A

The property of a fluid to change volume when subjected to changing pressure

7
Q

What is Beta and its units?

A

Bulk modulus. The ratio between pressure change and the relative volume of the fluid. In Pa.

8
Q

What is the effective bulk modulus?

A

Brainscape is shit at formulae. Need to look up myself

9
Q

Define Pascals principle

A

Pressure transmitted over the entire volume of a fluid, if it is static conditions