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Formula Symbols - H

Mathematics and Management Rules and Symbols

"H" Formula Symbols

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

SymbolGreek SymbolDefinitionEnglishMetricSIValue
Hg - Hagen number dimensionless dimensionless dimensionless -
Δp - Hagen–Poiseuille lbfin2 Pa kgm1s2 -
T12, τ12 tau half life - - -  -
Ah, Rh - Hall coefficient - - -  -
H - Hamiltonian function - - -  -
Ha  - Hartmann number dimensionless dimensionless dimensionless -
Eh  - Hartree energy  lbfft J kgm2s2 4.3597447222071(85)x1018 J
Ha  - Hatta number dimensionless dimensionless dimensionless -
Ph  - Havnes number dimensionless dimensionless dimensionless -
C - Hazen-Williams coefficient dimensionless dimensionless dimensionless -
Q - Hazen-Williams flow rate ft3sec m3s m3s1 -
pd - Hazen-Williams flow through a pressurized pipe lbfin2 Pa kgm1s2 -
v - Hazen-Williams flow through a open channel ftsec ms ms1  -
hf - Hazen-Williams head loss due to friction ft m m -
m  - Hazen-Williams hydraulic grade ft m m -
rh  - Hazen-Williams hydraulic radius in mm mm  -
v  - Hazen-Williams mean flow velocity ftsec ms ms1  -
d  - Hazen-Williams pipe inside diameter in mm mm  -
hc - hc constant -
h - head ft m m -
 hf - head friction loss in fittings and valves   dimensionless  dimensionless dimensionless -
hf - head fractional resistance - - - -
HGV - head gasket volume in3  mm3  mm3  HGV-
hl - head loss ft m m -
hf - head loss due to ftiction ft m m -
p - head pressure lbfin2 Pa kgm1s2 -
 v - head velocity ftsec  ms ms1 -
hdv - head velocity discharge ft m m -
hsv - head velocity suction ft m m -
Q - heat Btulbm kJkg kJkg1 -
   partial heat as a path function - - - -
C, cp - heat capacity BtuF kJK kJK1   -
Cp - heat capacity at constant pressure BtuF kJK kJK1   -
Cv - heat capacity at constant volume BtuF kJK kJK1   -
γ, κ, k gamma, kappa heat capacity ratio dimensionless dimensionless dimensionless -
Qc - heat conduction Btuhr W kgm2s3 -
λ lambda heat conductivity - - - -
Cp - heat constant pressure - - - -
Cv - heat constant volume - - - -
q - heat content Btulbm Jkg Jkg1 -
Q - heat convection - - - -
ΔQ - heat differential Btulbm Jkg Jkg1  -
κ kappa heat diffusivity ft2sec m2s m2s1  -
Q, q - heat energy - - - -
Q, Qf, Φ Phi heat flow rate Btuhr W kgm2s3 -
Q" - heat flux \large{\frac{Btu}{hr-ft^2}}  \large{\frac{W}{m^2}} W-m^{-2} -
q - heat loss F C x+273.15\;K -
K - heat loss coefficient of a device dimensionless dimensionless dimensionless -
d - heat penetration in mm mm -
Q, \;\phi phi heat radiation - - - -
HRR - heat release rate \large{\frac{Btu}{ft^2-hr}} \large{\frac{W}{m^2}} W-m^{-2} -
Q - heat transfer \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
Q_c - heat transfer by conduction \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
R_t - heat transfer by conduction resistance through a cylindrical wall \large{\frac{hr-F}{Btu}} \large{\frac{K}{W}}  K-W^{-1} -
 Q_c  - heat transfer by conduction through a cylindrical wall \large{\frac{Btu}{hr}}  W kg-m^2-s^{-3}  -
 Q_c - heat transfer by conduction through a plane wall \large{\frac{Btu}{hr}}  W kg-m^2-s^{-3} -
Q_c - heat transfer by convection \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
Q_r - heat transfer by radiation \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
h, \;h_c - heat transfer coefficient \large{\frac{Btu}{hr-ft^2-F}}  \large{\frac{W}{m^2-K}} W-m^{-2} -K^{-1} -
h_{wall} - heat transfer coefficient of a pipe wall \large{\frac{Btu}{hr-ft^2-F}}  \large{\frac{W}{m^2-K}} W-m^{-2} -K^{-1} -
Q_t - heat transfer rate \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
Q - heat transfer to a system \large{\frac{Btu}{hr}} W kg-m^2-s^{-3} -
H_v - heat of vaporization \large{\frac{Btu}{lbm}} \large{\frac{J}{kg}} J-kg^{-1} -
HV - heating value \large{\frac{Btu}{lbm}} \large{\frac{kJ}{kg}} J-kg^{-1} -
h - height ft or in m or mm m or mm -
h_1 - height of drivers' eyes above the roadway surface ft m m -
h_2 - height of object above the roadway surface ft m m -
He - Hedstrom number dimensionless dimensionless dimensionless -
h - height of fluid column ft or in m or mm m or mm -
A - Helmholtz function - - - -
He - Helmholtz number dimensionless dimensionless dimensionless -
C - Henry's law \large{\frac{mol}{gal}} \large{\frac{mol}{L}} mol-L^{-1} -
H_s - Henry's law constant (solubility) - \large{\frac{mol}{m^3-Pa}} mol-m^{-3}-Pa^{-1} -
H_v - Henry's law constant (volatility) - \large{\frac{m^3-Pa}{mol}} m^3-Pa-mol^{-1} -
HHV - higher heating value \large{\frac{MMBtu}{lbm}} \large{\frac{W}{m^2}}  W-m^{-2} -
\sigma_h sigma hoop stress \large{\frac{lbf}{in^2}} Pa kg-m^{-1}-s^{-2} -
H - horizontal cable force lbf N kg - m - s^{-2} -
x - horizontal distance ft m m -
x - horizontal distance from reaction to point on beam in mm mm -
x - horizontal position ft m m -
R - horizontal range of a projectile ft m m -
H - horizontal reaction load at bearing load lbf N kg - m - s^{-2} -
HP, \;hp - horsepower \large{\frac{lbf-ft}{sec}} \large{\frac{J}{s}} J-s^{-1} -
HWD - hot well depression - - - -
H_0 - Hubble constant - \large{\frac{1}{s}}  1-s^{-1} 2.25\;x\;10^{-18} \large{\frac{1}{s}}
\omega omega humidity ratio \large{\frac{lbm}{lbm}} \large{\frac{kg}{kg}} kg-kg^{-1} -
k - hydraulic conductivity \large{\frac{ft}{day}} \large{\frac{m}{day}} m-day^{-1} -
h_d - hydraulic depth ft m m -
d_h - hydraulic diameter ft m m -
d_h  - hydraulic diameter of a duct, pipe or tube in  mm  mm  -
d_h  - hydraulic diameter of a rectangular tube  ft  m  m -
d_h   - hydraulic diameter of a right triangle  ft  m  m  -
 d_h - hydraulic diameter of a square tube  in  mm  mm  -
 d_h - hydraulic diameter of a tube within a tube  in  mm  mm -
d_h   - hydraulic diameter of an ellipse  in  mm  mm -
d_h  - hydraulic diameter of an isosceles triangle  ft  m  m  -

n_h

  hydraulic efficiency dimensionless dimensionless dimensionless  -
E_h - hydraulic energy lbf-ft J kg - m^2 - s^{-2} -
i - hydraulic gradient dimensionless dimensionless dimensionless -
 Q - hydraulic gradient flow rate \large{\frac{ft^3}{sec}} \large{\frac{m^3}{s}}  m^3-s^{-1} -
h - hydraulic head ft  m m  
HHP, \;HP_h - hydraulic horsepower \large{\frac{lbf-ft}{sec}} \large{\frac{J}{s}} J-s^{-1} -
P_h - hydraulic power \large{\frac{lbm-ft^2}{sec}} \large{\frac{kg-m^2}{s}}  kg-m^2-s^{-1} -
n_h - hydraulic pump efficiency dimensionless dimensionless dimensionless -
r_h - hydraulic radius ft m m -
r_h  - hydraulic radius of a partially full pipe (less than half full) in mm  mm -
r_h   - hydraulic radius of a partially full pipe (more than half full) in mm mm -
r_h  - hydraulic radius of a pipe in mm mm -
r_h   - hydraulic radius of a rectangular channel ft  m m -
 r_h - hydraulic radius of a trapezoidal channel (equal side slopes) ft m m -
r_h  - hydraulic radius of a rapezoidal channel (unequal side slopes) ft m m -
r_h   - hydraulic radius of a triangular channel ft m  m -
S - hydraulic slope ft m m -
H - hydrogen density \large{\frac{lbm}{ft^3}} \large{\frac{kg}{m^3}}  kg-m^{-3} -
H - hydrogen gas - - - -
HP - hydrostatic pressure \large{\frac{lbf}{in^2}} Pa kg- m^{-1}-s^{-2} -
HDS - hydrostatic stress \large{\frac{lbf}{in^2}} Pa kg- m^{-1}-s^{-2} -
-  - hydrostatic weighting  -  - -  -
\Delta \nu_{cs}  \nu hyperfine transition frequency of 133Cs Hz Hz   s^{-1}  9\;192\;631\;770 Hz
Symbol Greek Symbol Drfinition English Metric  SI Value

 

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