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CUA / Mechanical Engineering / ME 331 / What is the substance that deforms when acted on by sharing the stress

What is the substance that deforms when acted on by sharing the stress

What is the substance that deforms when acted on by sharing the stress

Description

magnitude


What is the substance that deforms when acted on by sharing the stress of any magnitude?



Fluid Mechanics Exam #1 Study Guide (A review of topics covered in class.)

• A fluid is a substance that deforms continuously when acted on by a shearing stress of any

(Shearing Stress: coĀ conte]) continuum - something that can be infinitely divisible * State Condition of a system as defined by at


What is the meaning of continuum?



its properties (p t), CP,D), (T, ) ) Process = change of state Steady state independent of time (constant w/ time) material properties: dennity, specific nomine, viscosity We also discuss several other topics like Who makes sure law enforcement is doing their job correctly and honestly?

thermo

y

P propevta

/


What are the properties of fluid?



Finid

Propertie

Density: poña centras ( Specific volume: De

• Specific weight : 7-89 [69/m252][] o compressibility: measure change of pressure to acheive If you want to learn more check out How do you introduce a senior leader?
If you want to learn more check out What is the study of flight dynamics called?

BE change in volume

- dp in terms Rindy moculus: Eva (dyr) of density

for ideal gas isothermal process: P and Er

are directly prop. isentropic process Ev=kp

- * langer initial pressme.

makes it harder to compress

further

(Fluid properties cont.) o Viscosity characterizes the way fluid flows

1 Zz M.

graelient of velouty dynamic

along normal direction of flow

"viscosity If you want to learn more check out What is the dimensional approach to classification?

WA

Gradient = change in spacial

r dimension

X

- After tast

conette Flow. To - After test zamy z ar t= -u du

de

retour

Newtonian

Fluid

LM=const.

Non-Newtonian Fluid

shear thinning → shear this kening

Bignham pastic

)

Zamduli

Rate of

Shearing

strain

• Surface

Tension

:

The

surface behawes like a fabric

in tension

Wetting liquid Non-wetting liquid Don't forget about the age old question of What is meant by bystander apathy?

Capillary Action

cohesive forces between fluid is weaker than fluid-solid

opposite

Repulsion

and

kise

ma

h = 2040

Putut >

• Vapor pressure : Boiling occurs when liquid

- reaches vapor pressure Pressure P= lim (EF). ŕ

Ano A PAMF - [ Pau 2 / PASS Gage Pressure Page = PABS - Paim E

Equation for pressure field y) 21 8v=may

Assuming x) - ar sv=max YT0 2) - JP SU=maz + mg Don't forget about the age old question of What is the process that detects stimuli from the environment?

1 - Jp - 8k zpå

Hydrostatic equation

Pressure Distribution: F = -8 hc A ñ

9. – Ч. се 4 Жер – Х. Buoyant Force Archimedes' Principle

FB: 8 V Body theory: Frody Yo = 8 Uprism E - Vfinid yw stability for fully snomerged bodies: centroid above CG = Stable

partially submerged bodies can be either

depending on geometry

1

0

below

C G => unstable

Pressure Variation in a Fluid with Rigid-Body Motion

UNUN

for free surface => a

= lr + left)

value For

of (az eg) Hydrostatic equation code Rotational Motion

Centripetal

acceleration

ayz - vw2

Free T Z z rzw 02 + const.

. const. surface

Shape ! * pcr,z): dp prwdr - 8 dz

p increases with 'r

-

Tp + 8z

- prw

=const. I

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