Formula Symbols - S

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

SymbolGreek SymbolDefinitionUSMetric
\(S\) - sag \(ft\) \(m\)
\(e_s\) - saturated vapor pressure - -
\(Sc\) - Schmidt number dimensionless number dimensionless number
\(v_s\) - seepage velocity - -
\(H\) - shape factor dimensionless number dimensionless number
\(G\) - shear modulus \(lbf/in^2\) \(Pa\)
\(\gamma \) gamma shear strain \(rad\) \(rad\)
\(\tau \) tau shear stress \(lbf/ft^2\) \(Pa\)
\(Sh\) - Sherwood number dimensionless number dimensionless number
\(\mu \) mu simple viscosity \(lbf-sec/ft^2\) \(Pa\cdot s\)
\(G\) - slipping - -
\(m\) - slope \(ft\) \(m\)
\(S\) - Sommerfield number dimensionless number dimensionless number
\(a\) - sound \(ft/sec\) \(m/s\)
\(h\) - specific enthalpy \(Btu/lbm\) \(kJ/kg\)
\(R\) - specific gas constant \(ft-lbf/lbm-^\circ R\) \(kJ/kg \cdot K\)
\(SG\) - specific gravity dimensionless number dimensionless number
\(c\) - specific heat \(Btu/lbm-^\circ F\) \(kJ/kg \cdot ^\circ C\)
\(Q\) - specific heat capacity \(Btu/lbm-^\circ F\) \(kJ/kg \cdot ^\circ C\)
\(C_p\) - specific heat constant pressure - -
\(C_v\) - specific heat constant volume - -
\(I_{sp}\) - specific impulse \(sec\) \(s\)
\(u\) - specific internal energy \(Btu/lbm\) \(kJ/kg\)
\( \upsilon \) upsilon specific volume \(ft^3/lbm\) \(m^3/kg\)
\(\gamma \) gamma specific weight \(lbf/ft^3\) -
\(n\) - speed \(ft/sec\) \(m/s\)
\(v\) - speed \(ft/sec\) \(m/s\)
\(a\) - speed of sound \(ft/sec\) \(m/s\)
\(k_s\) - spring constant \(lbf/ft\) \(N/m\)
\(d_s\) - spring displacement - -
\(F_s\) - spring force - -
\(St\) - Stanton number dimensionless number dimensionless number
\(SE\) - static efficiency - -
\(f_s\) - static friction - -
\(\mu_s\) mu static friction coefficient dimensionless number dimensionless number
\(SP\) - static pressure \(in\;wg\) \(Pa\)
\(\Psi \) Psi steam function - -
\(\Phi \) Phi steam potential - -
\(Ste\) - Stefan number dimensionless number dimensionless number
\(\sigma\) sigma Stefan-Boltzmann constant - -
\(St\) - Stokes' Law - -
\(\epsilon \) epsilon strain \(in/in\) \(m/mdeg\)
\(\sigma\) sigma stress \(in/in\) \(m/mdeg\)
\(S\) sigma stress \(in/in\) \(m/mdeg\)
\(L\) - stroke \(ft\) \(m\)
\(L\) - stroke length \(ft\) \(m\)
\(S\) - strength \(lbf/in^2\) \(Pa\)
\(Sr\) - Strouhal number dimensionless number dimensionless number
\(N\) - Stuart number dimensionless number dimensionless number
\(\sigma \) sigma surface tension \(lbf/ft\) \(N/m\)