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
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?
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?
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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
(Fluid properties cont.) o Viscosity characterizes the way fluid flows
1 Zz M.
graelient of velouty dynamic
along normal direction of flow
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Gradient = change in spacial
- After tast
conette Flow. To - After test zamy z ar t= -u du
shear thinning → shear this kening
surface behawes like a fabric
Wetting liquid Non-wetting liquid Don't forget about the age old question of What is meant by bystander apathy?
cohesive forces between fluid is weaker than fluid-solid
h = 2040
• 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
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
C G => unstable
Pressure Variation in a Fluid with Rigid-Body Motion
for free surface => a
= lr + left)
of (az eg) Hydrostatic equation code Rotational Motion
ayz - vw2
Free T Z z rzw 02 + const.
. const. surface
Shape ! * pcr,z): dp prwdr - 8 dz
p increases with 'r
Tp + 8z