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Formula Symbols - H

Written by Jerry Ratzlaff on . Posted in Nomenclature & Symbols for Engineering, Mathematics, and Science

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H

SymbolGreek SymbolDefinitionUSMetricValue
\(Hg\) - Hagen number dimensionless dimensionless -
\(T_{\frac{1}{2}}\), \(\;\tau_{\frac{1}{2}}\) tau half life - -  -
\(A_h\), \(\;R_h\) - Hall coefficient - -  -
\(H\) - Hamiltonian function - -  -
\(Ha\) - Hartmann number dimensionless dimensionless  -
\(E_h\) - Hartree energy constant constant \(4.359\;744\;722\;2071\;x\;10^{-18}\;J\)
\(Ha\) - Hatta number dimensionless dimensionless  -
\(P_h\) - Havnes number dimensionless dimensionless  -
\(C\) - Hazen-Williams coefficient - -  -
\(C\) - Hazen-Williams friction coefficient - -  -
\(hc\) - hc constant constant  -
\(h\) - head \(ft\) \(m\)  -
\(h_f\) - head fractional resistance - -  -
\(HGV\) - head gasket volume \(in^3\) \(cc^3\)  -
\(h_l\) - head loss \(ft\) \(m\)  -
\(h_f\) - head loss due to ftiction \(ft\) \(m\)  -
\(q\) - heat \(ft-lbf\) \(J\)  -
\(q\) - heat \(Btu\) \(kJ\)  -
\(q\) - heat \(HP-hr\) \(MJ\)  -
 \(\partial\)  partial heat as a path function - -  -
\(C\), \(\;c_p\) - heat capacity \(Btu\;/\; ^\circ F\) \(kJ\;/\;K\)  -
\(C_p\) - heat capacity at constant pressure \(Btu\;/\; ^\circ F\) \(kJ\;/\;K\) -
\(\gamma\), \(\;\kappa\), \(\;k\) gamma, kappa heat capacity ratio dimensionless dimensionless  -
\(Q_c\) - heat conduction \(Btu\;/\; hr-ft^2- ^\circ F\) \(W\;/\;m^2-K\)  -
\(\lambda\) lambda heat conductivity - - -
\(C_p\) - heat constant pressure - -  -
\(C_v\) - heat constant volume - -  -
\(q\) - heat content - -  -
\(Q\) - heat convection - -  -
\(\Delta Q\) - heat differential \(^\circ F\) \(^\circ C\)  -
\(\kappa\) kappa heat diffusivity - - -
\(Q\), \(\;q\) - heat enargy \(ft-lbf\) \(J\)  -
\(Q\), \(\;Q_f\), \(\;\Phi\) Phi heat flow rate \(Btu\;/\; hr-ft^2- ^\circ F\) \(W\;/\;m^2-K\)  -
\(Q"\) - heat flux - -  -
\(HGV\) - heat gasket volume \(in^3\) \(cc^3\)  -
\(G\) - heat generation rate \(Btu\;/\;hr-ft^3\) \(W\;/\;m^3\)  -
\(H_i\)   heat input required \(Btu\) \(kg\)  -
\(q\) - heat loss \(Btu\;/\;lbm\) \(kJ\;/\;kg\)  -
\(K\) - heat loss coefficient of a device dimensionless dimensionless  -
\(q\) - heat per unit mass \(Btu\;/\;lbm\) \(kJ\;/\;kg\)  -
\(Q\), \(\;\phi\) phi heat radiation - -  -
\(Q\) - heat transfer \(Btu\;/\;hr\) \(W\)  -
\(Q_c\) - heat transfer by conduction - -  -
\(Q_c\) - heat transfer by convection - -  -
\(Q_r\) - heat transfer by radiation - -  -
\(h\), \(\;h_c\) - heat transfer coefficient \(Btu\;/\;hr-ft^2-^\circ F\) \(W\;/\;m^2 - K\)  -
\(Q_t\) - heat transfer rate \(Btu\;/\;hr-ft^2-^\circ F\) \(W\;/\;m^2 - K\)  -
\(Q\) - heat transfer to a system - -  -
\(H_v\) - heat of vaporization \(Btu\;/\;lbm\) \(kJ\;/\;kg\) -
\(HV\) - heating value \(Btu\;/\;lbm\) \(kJ\;/\;kg\)  -
\(h\) - height \(in \;or\; ft\) \(mm \;or\; m\)  -
\(He\) - Hedstrom number dimensionless dimensionless -
\(h\) - height of fluid column \(in \;or\; ft\) \(mm \;or\; m\)  -
\(A\) - Helmholtz function - -  -
\(He\) - Helmholtz number dimensionless dimensionless  -
\(k_H\) - Henry's law constant - -  -
\(HHV\) - higher heating value \(Btu\;/\;lbm\) \(kJ\;/\;kg\)  -
\(T_h\)   higher temperature \(Btu\;/\;lbm\) \(kJ\;/\;kg\)  -
\(n\), \(\;n_n\) - hole number density - -  -
\(H\) - horizontal cable force \(lbf\) \(N\)  -
\(x\) - horizontal distance \(ft\) \(m\)  -
\(x\) - horizontal position \(ft\) \(m\)  -
\(H\) - horizontal reaction load at bearing load \(lbf\) \(N\)  -
\(HP\), \(\;hp\) - horsepower - -  -
\(HP\), \(\;hp\) - horsepower (air) \(ft-lbf\;/\;s\) -  -
\(HP\), \(\;hp(S)\) - horsepower (boiler) \(Btu\;/\;h\) -  -
\(HP\), \(\;hp(E)\) - horsepower (electric) \(W\) -  -
\(HP\), \(\;hp(I)\) - horsepower (mechanical) \(ft-lbf\;/\;min\) \(kgf-m\;/\;s\)  -
\(HP\), \(\;hp(M)\) - horsepower (metric) - \(kgf-m\;/\;s\)  -
\(He\) - Henry's law constant \(l\;/\;atm\) \(l\;/\;atm\)  -
\(HWD\) - hot well depression \(^\circ F\) \(^\circ C\)  -
\(H_0\) - Hubble constant constant constant  \(2.27\;Es^{-1}\)
\(\omega\) omega humidity ratio \(lbm\;/\;lbm\) \(kg\;/\;kg\)  -
\(k\) - hydraulic conductivity \(ft\;/\;sec\) \(m\;/\;sec\)  -
\(d_h\) - hydraulic diameter \(ft\) \(m\)  -
\(i\) - hydraulic gradient dimensionless dimensionless  -
\(r_h\) - hydraulic radius \(ft\) \(m\)  -
\(S\)   hydraulic slope \(ft\) \(m\)  -
\(H\) - hydrogen density \(lb\;/\;ft^3\) \(kg\;/\;m^3\)  -
\(H\) - hydrogen gas - -  -
\(HP\) - hydrostatic pressure \(lb\;/\;in^2 \;or\; psi\) \(Pa\)  -
\(HDS\) - hydrostatic stress \(lb\;/\;in^2 \;or\; psi\) \(Pa\)  -
\(F\) - hyperfine - -  -
\(\Delta \nu_cs\)  \nu hyperfine transition frequency of 133Cs constant constant \(9\;192\;631\;770\;Hz\)
Symbol Greek Symbol Drfinition US Metric Value

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