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AREA 2 > Fluid Mechanics, Heat Transfer And Statistics > Flashcards

Fluid Mechanics, Heat Transfer And Statistics Flashcards

1
Q

Study of liquid at rest

A

Hydrostatic

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2
Q

Quantitative measure of the amount of matter in a given body

A

Mass

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3
Q

Classification of flow in Froude No?

A

Subcritical flow (Fr<1)
Critical Flow (Fr = 1)
Supercritical flow (Fr>1)

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4
Q

Flow classifications in reynolds number

A

Laminar - Re < 500
Turbulent - Re> 1,000
Transition - 500 < Re < 1000

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5
Q

Any substance that deforms continuously so long as shear stress is applied

A

Fluid

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6
Q

Branch of mechanics concerned with the laws controlling the behavior of water and other liquids at rest and in motion

A

Hydraulics

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7
Q

Deals with geometry of motion of liquids without considering the forces causing that motion

A

Hydrokinetics

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8
Q

Atmospheric pressure

A

101 325 Pa
101.325 KPa

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9
Q

A measure of a fluids resistance to shear

A

Dynamic Viscosity, absolute viscosity or viscosity

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10
Q

The volume per unit of mass of fluid inverse of density

A

Specific Volume

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11
Q

The earth’s gravitational pull upon a body

A

Weight

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12
Q

Deals with forces exerted by or upon liquids in motion including relations between velocities and accelerations involved in such fluid motion

A

Hydrodynamics

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13
Q

Reference density of air density

A

1.225 kg/m³

Density of mercy
- 13 600 kg/m³

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14
Q

The ratio of the absolute viscosity to density

A

Kinematic Viscosity

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15
Q

Stefan Boltzmann Formula for Block body radiation

A

Qe = EQAT⁴

where: E=emissivity
Q=Stefan Boltzmann constant
(5.669x10-⁸ W/m²-K⁴)
Absolute Temperature of the
the surface K

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16
Q

Formula of heat transfer by Convection

A

q = h(Thot gas-Tsurface)

where:
h- convective heat transfer coefficient (W/m²-K)
Thot gas- temperature of the hot gas
Tsurface- surface temperature
q- heat flux (W/m²)

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17
Q

Formula of Fourier’s Law of Heat conduction

A

Q = k • A • (T1-T2)/d

Where:
Q- heat transfer rate (W)
k- thermal conductivity of the material (W/m-K)
A- area
T1 and T2- temperature on the two surface
d- thickness of the surface

18
Q

The fraction of irradiation transmitted by the surface

A

Transmissivity

19
Q

May form a lower energy isotope of the same elements or losses enough particles to become a different element altogether

A

Radioactive Decay (RAD)

20
Q

Are packs of electromagnetic radiation which sometimes accompanies alpha or beta particles emission

A

Gamma Rays

21
Q

The radiation flux living a surface from all direction

A

Radiosivity

22
Q

Has a negative charge with very small mass that can be assumed to be zero

A

Beta Particles

23
Q

The radiation flux incident on a surface from all direction

A

Irradiation

24
Q

Is made up of two protons and two neutrons and has a mass of 4 and charge of +2

A

Alpha particles

25
Q

The process at which unstable atoms emits or radiate excess energy in the forms of particles or waves

A

Radioactive Decay

26
Q

Are part of electromagnetic spectrum such as light and x-ray but are of much higher energy and much shorter wavelength

A

Gamma radiation

27
Q

Abody that absorbs all electromagnetic radiation and absorbs all wavelengths such as no reflection occurs

A

Black body or reflect black body

28
Q

The fraction of irradiation absorbed by the surface

A

Absorptivity

29
Q

Stefan Boltzmann Constant

A

5.669x10-⁸ W/m²-K⁴

30
Q

Conversion of Celsius to Kelvin

A

Add 273.15

31
Q

It is sometimes called the mid x point or midpoint is the middle value of the class

A

Class Mark

32
Q

General formula of probability

A

P= no of wanted outcomes/No of possible outcomes

33
Q

It is the measure or estimation of events are likely to happen

A

Probability

34
Q

It is the central value distribution and it divides distribution into two equal parts

A

Median

35
Q

It is the value that occurs most frequently in the distribution or the most common among the observation

A

Mode (Mo)

36
Q

The total number of experimental units or class

A

Population

37
Q

It is the difference between upper and lower boundaries of a class or two successive points

A

Class interval

38
Q

It is the sum of all observations divided by their number

A

Arithmetic mean

39
Q

A property or characteristics of the population

A

Parameter

40
Q

It is the length of an interval which covers the highest and lowest value of the observations

A

Range

41
Q

Failing to reject the null hypothesis when it is actually false

A

Type II

42
Q

Stefan Boltzmann in calculator

A

Shift 7 and input 31

AREA 2 (5 decks)

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