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Fluid Mechanics Flashcards

(11 cards)

0
Q

Temperature has what relationship with viscosity?

A

Negative or inverse

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1
Q

Density

A

Mass per unit volume

Mass / Volume

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2
Q

Upthrust is equal to

A

The weight of the fluid displaced.

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3
Q

Upthrust =

A

Fluid volume x Fluid density x Gravitational field strength

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4
Q

Laminar flow

A

No mixing of layers
No changes in velocity
Parallel layers

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5
Q

Turbulent flow

A

Mixing of layers
Abrupt changes in velocity
Direction changes by more than 90 deg
Eddies are formed

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6
Q

Viscous drag always acts…

A

In the opposite direction of movement.

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7
Q

Viscous drag =

Of a sphere

A

6pi x Viscosity x Radius x Terminal velocity

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8
Q

Equation of falling sphere

A

Sphere weight = Upthrust + VD

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9
Q

Equation of rising sphere

A

Sphere weight + VD = Upthrust

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10
Q

Weight =

A

Volume x Density x Gravitational field strength

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