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Fluids
M
V
P-
F Mg
PVG
z
Pgh
-Pascal's Principle
A
A
A
scalar
Surface
area
+Ao
PA-PB
line of action
~center of surface.
F
Vi - Aihi Vo = Aoho
(-
h₂ =
hi
W-Fi hi
Hydrostatic Paradox
lift
P₁ = PB = Pc
4 extra downward force
TB
Hydrostatic Pressure
atmospheric pressure
↓
specific gravity
SG-P
Total
:
pressure
Pa = Po + P₂
- Buoyant Force (Fb)
1%
ing
-- F√(A) ho (A) = Foto
A A
Archimedes' Principle
F₂-mp3-SpV
replaced fluid
Subnered volun
-Fluid at flow steady flow: fix point don't change with time
laminar flow layers do not mix
turbulent flow: transition from laminor turbulent
absolute
•gauge pressure
pressure
Viscosity
-loyer-layer
Norviscous Viscous
-Surface tension
friction
-fluid-wall
Hydrophilic
Hydrophobic
-fluid - object
v
n = FL
V-O
VA
2958F
smaller at high temp
flow in a tube
Adhesion Cohesion Cohesion > Adhesion
Flow rate Q = P₂-P₁
R
Poiseville's Law
F
FYL
varied by temp
Mg
0.
90°
Max
Reynolds number
*
r-
Pghr
(red)
2cose
Lindicate type of flow N/R = PVL (object in fluid)
n
Stroke's law F₁ = 6RnV
P₁
Resistance R= 8hl
G = (P₂-P₁) art
74
841
NR=
2pvr
n
(in tube)
Mg
Flow rate
Q=AV
A₁V₁ = A₂V₂
At
P₁ + P9 Y ₁ + 1½ P v² = P₁₂ + S G Y ₂ + 1 V2 Bernoulli's Equation
Venturi effect
-he