Description
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
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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
thermo
y
P propevta
/
Finid
Propertie
Density: poña centras ( Specific volume: De
• Specific weight : 789 [69/m252][] o compressibility: measure change of pressure to acheive Don't forget about the age old question of What is the angle of attack for zero lift?
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. If you want to learn more check out What does dsm stand for classification?
graelient of velouty dynamic
along normal direction of flow
"viscosity
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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.
NonNewtonian Fluid
shear thinning → shear this kening
Bignham pastic
)
Zamduli
Rate of
Shearing
strain
• Surface
Tension
:
The Don't forget about the age old question of What is the process that detects stimuli from the environment?
surface behawes like a fabric
in tension
Wetting liquid Nonwetting liquid
Capillary Action
cohesive forces between fluid is weaker than fluidsolid
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
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 RigidBody 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