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Fluid Machinery > FLUID PROPERTIES > Flashcards

FLUID PROPERTIES Flashcards

1
Q

liquid or gas substance capable of flowing

A

FLUID

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2
Q

possess particles that easily move and change their relative position without a separation of the mass, and they offer practically no resistance to change in form

A

FLUID

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3
Q

fluids that have little resistance to change either in form or volume and occupy all the space in which it is contained

A

GASES

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4
Q

fluids that offer great resistance to change in volume and occupy a definite portion in which it is contained

A

LIQUIDS

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5
Q

fluids that have no viscosity, are incompressible, no resistance to shear, no eddy currents, and no friction between moving surfaces

A

IDEAL FLUIDS

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6
Q

fluids that are compressible, have non-uniform velocity distributions, and have friction and turbulence in flow

A

REAL FLUIDS

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7
Q

viscous real fluids and whose shear stresses are a linear function of the fluid strain

A

NEWTONIAN FLUIDS

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8
Q

real fluids like pastes, gels, electrolyte solutions, slurries, and etc

A

NON-NEWTONIAN FLUIDS

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9
Q

mass per unit volume of a substance

A

DENSITY

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10
Q

weight per volume of a substance

A

SPECIFIC WEIGHT

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11
Q

quantitive measure of the amount of matter in a given body

A

MASS

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12
Q

known as Relative Density

A

SPECIFIC GRAVITY

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13
Q

ratio of the density or specific weight of a substance to the density or specific weight of some other standard substance

A

SPECIFIC GRAVITY

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14
Q

volume per unit mass of a substance

A

SPECIFIC VOLUME

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15
Q

reciprocal of mass density

A

SPECIFIC VOLUME

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16
Q

fluid’s resistance to flow or the property of the fluid to resist shear deformation

A

VISCOSITY

17
Q

a fluid that has no viscosity and incompressible

A

PERFECT FLUID

18
Q

ratio of the dynamic viscosity of the fluid to the mass density

A

KINEMATIC VISCOSITY

19
Q

effect of cohesion between particles of the liquid at its free surface

A

SURFACE TENSION

20
Q

behavior of liquid in a thin-bore tube

A

CAPILLARITY

21
Q

rise and fall of liquid in a capillary tube

A

CAPILLARY ACTION

22
Q

cause by surface tension between the liquid and a vertical solid

A

CAPILLARITY

23
Q

attractive force between molecules of different substances

A

ADHESION

24
Q

attractive force between molecules of the same substance

A

COHESION

25
Q

curve surface of liquid in a capillary tube

A

MENISCUS

26
Q

pressure exerted by the atmosphere on every surface with which it comes in contact

A

BAROMETRIC PRESSURE

27
Q

pressure measured by barometer

A

ATMOSPHERIC PRESSURE

28
Q

constants of atmospheric pressure

A

1 atm = 101.325 kPa = 14.7 psi = 760mmHg

29
Q

pressure measured above absolute zero

A

ABSOLUTE PRESSURE

30
Q

formula for absolute pressure

A

Pabs = Pgage + Patm

31
Q

pressure measured by means of gages above or below atmospheric level

A

GAGE PRESSURE

32
Q

measure of the resistance of a fluid to shear or angular deformation

A

ABSOLUTE OR DYNAMIC VISCOSITY

33
Q

property of the liquid due to both cohesion and adhesion

A

CAPILLARITY

34
Q

pressure exerted by the vapor as evaporation of the liquid takes place within a closed space

A

VAPOR PRESSURE

35
Q

dimensionless number which is the ratio of the forces of inertia to viscous forces of fluids

A

REYNOLD’S NUMBER

36
Q

type of fluid flow in which the fluid travels smoothly or in regular paths

A

LAMINAR FLOW

37
Q

type of fluid flow in which the fluid undergoes irregular fluctuations, or mixing, in contrast to laminar flow

A

TURBULENT FLOW

38
Q

mixture of laminar and turbulent flow, with turbulence in the center of the pipe, and laminar flow near the edges

A

TRANSITIONAL FLOW

39
Q

differences of Reynold’s Number according to types of flow

A

LAMINAR - RE < or = to 2000
TURBULENT - RE > 4000
TRANAITIONAL - 2000 < RE < or = to 4000

Fluid Machinery (5 decks)

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