HGE Flashcards
SPECIFIC GRAVITY SG
p / pwater
gamma / gammawater
GAGE PRESSURE Pgage
gamma * h
ABSOLUTE PRESSURE Pabs
Pgage + Patm
Patm
101.325kPa
1atm
10.1 tons/m^2
760 mm Hg
MASS DENSITY p
WEIGHT DENSITY gamma
m / vol
W / vol
SG Oil
SG Mercury
SG Glycerin
SG Saltwater
.8
13.6
2.4
1.03
HYDROSTATIC FORCE HORIZ Fhx
HYDROSTATIC FORCE VERTI Fhy
gamma liquid * hbar * A
gamma liquid * volumeabove
ECCENTRICITY e
Icg / (Aybar)
Icgsintheta / (Ahbar)
(gammaIcg*sintheta) / Fh
Aspandrel
Asector
1/3 * bh
1/2 * r^2*theta
BUOYANT FORCE BF
gamma liquid * Voldisplaced
BF = W for floating
W > BF for sinking
acts at geometric centroid
MOVING LIQUIDS tan theta
a/g
yrise = ydepression if no spill
ROTATING VESSELS y
y/2 > hair initial
y/2 < hair initial
w^2*r^2 / 2g
spill
no spill
Vol paraboloid
r^2ypi / 2
SQUARE PROPERTY OF PARABOLA SPP
x1^2 / y1 = x2^2 / y2
DISCHARGE Q
MASS DISCHARGE Qmass
WEIGHT DISCHARGE Qweight
AVelocity
pAVelocity
pgAVelocity
ENERGY EQUATION
E1-hf=E2
v1^2/2g + P1/gamma + z1 - hf = v2^2/2g + P2/gamma + z2
At stagnation point in pitot ___ = ___
No ___ in venturis, pitot, piezo
V=0
elevation head
Head is
height of liquid above orifice
1m^3
1000 Liters
MANNINGS VELOCITY V
1/n * R^2/3 * S^.5 for metric
1.49/n for imperial
MANNING hf
10.29n^2LQ^2 / D^16/3
HAZEN WILLIAMS hf
10.67LQ^1.85 / (C^1.85 * D^4.87)
DARCY WEISBACH hf
0.0826fLQ^2 / D^5 for metric only
or fLV^2 / 2gD for imperial and metric
SLOPE OF EGL
hloss / L
HYDRAULIC RADIUS R
Aflow/Pwetted
POWER P
Q gamma hloss
Pextracted
Padded
Pinput
Poutput
Series Pipes have equal __ and sum of __
discharge, headlosses
Parallel Pipes have equal __, Qa = ___ and have same ___
headlosses, Qb+Qc, input and output
MES RECTANGLE
MES TRIANGLE
MES TRAPEZOID
MES CIRCLE
b=2d
b=2d, 90 degree angle inside
b=b=b, 120 inside angle 1 side
0.94d
FROUDE NUMBER Fn
<1
>1
=1
SQRT (Q^2T/ (A^3g))
sub
super
critical
SPECIFIC ENERGY Espec, has no ______
V^2/2g + d, pressure head
CRITICAL DEPTH dcrit
2/3 Emin