Formula Symbols - W

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

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W

SymbolGreek SymbolDefinitionEnglishMetricSIValue
\(\frac{m_w}{m_z}\) - W-to-Z mass ratio dimensionless constant \(0.881\;53\;(17)\)
\(W\) - Wahl correction factor dimensionless -
\(f\) - Wallis parameter dimensionless -
\(w\) - water content dimensionless -
\(\rho_w\) rho water density by temperature \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\) \(kg - m^{-3}\) -
\(Q_w\) - water flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3 - s^{-1}\) -
\(q\) - water flow rate increment \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3 - s^{-1}\) -
\(Q_w\) - water flow rate through a valve \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3 - s^{-1}\) -
\(Q_w\) - water flow rate through an orfice \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3 - s^{-1}\) -
\(Q_w\) - water flow rate through piping \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3 - s^{-1}\) -
\(v\) - water hammer flow velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\) -
\(\Delta v\) - water hammer fluid velocity change \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\) -
\(g\) - water hammer gravitational acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\) \(m - s^{-2}\) -
\(p\) - water hammer inlet pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(p_{spf}\) - water hammer maximum surge pressure for fluid \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(p_{spw}\) - water hammer maximum surge pressure for water \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
- - water hammer maximum surge pressure head \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(p_{inc}\) - water hammer pressure increase \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(\alpha\) alpha water hammer pressure wave velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\)  -
\(\gamma_f\) gamma water hammer unit weight of fluid \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{N}{m^3}}\)  \(N - m^{-3}\) -
\(l\) - water hammer upstream pipe length \(ft\) \(m\) \(m\)  -
\(t\) - water hammer valve closing time \(sec\) \(s\) \(s\)  -
\(WHP\), \(HP_w\) - water horsepower \(\large{\frac{lbf-ft}{sec}}\) \(\large{\frac{J}{s}}\) \(J - s^{-1}\)   -
\(WkW\) - water kilowatts - - - -
\(d\) - water pipe sizing \(in\) \(mm\)  \(mm\) -
\(p_i\) - water pressure loss through piping \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(WS\) - water surface - - - -
\(p\) - water vapor pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg- m^{-1}-s^{-2}\) -
\(v_w\) - water velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\) -
\(v_w\) - water velocity through piping \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\) -
\(P\) - watt (electric)  \(\large{\frac{lbf-ft}{sec}}\) \(W\)  \(kg-m^2-s^{-3}\) -
\(H\) - wave height \(in\) \(mm\) \(mm\)  -
\(\lambda\) lambda wavelength \(in\) \(mm\)  \(mm\) -
\(\lambda_l\) lambda wavelength (longitudinal) \(ft\) \(m\)  \(m\) -
\(v_w\) - wavelength velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\)  -
\(\Psi\) Psi wave function - - - -
\(\sigma^1\) sigma wave number - - - -
\(\sigma\) sigma wave vector - - - -
\(\lambda\) lambda wave velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m - s^{-1}\)  -
\(A_{web}\) - web area in a steel beam equal to the depth x web thickness \(ft^2\) or \(in^2\) \(m^2\) or \(mm^2\) \(m^2\) or \(mm^2\)  -
\(t_w\) - web thickness \(in\) \(mm\)  \(mm\) -
\(We\) - Weber number dimensionless -
\(G\), \(\;P\), \(\;W\) - weight \(lbf\) \(N\)  \(kg - m - s^{-2}\)  -
\(W_{\rho}\) rho weight density \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\) \(kg - m^{-3}\)  -
\(W_a\) - weight of air - - - -
\(W_b\) - weight of body \(lbf\) \(N\)  \(kg - m - s^{-2}\) -
\(W_{rho}\) rho weight density \(\large{\frac{lbf-in}{ft^3}}\) \(\large{\frac{kg-mm}{m^3}}\) \(kg - mm - m^{-3}\) -
\(\gamma\) gamma weight of fluid \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(W\) - weight force \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(W_{im}\) - weight of immersed body \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(W_s\) - weight of soil \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(W_s\) - weight of solid \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(W_w\) - weight of water \(lbf\) \(N\)   \(kg - m - s^{-2}\) -
\(\theta_w\) theda Weinberg angle dimensionless constant  \(0.22290\)
\(Wi\) - Weissenberg number dimensionless -
\(A\) - weld current - -  - -
\(W\) - weld size \(in\) \(mm\) \(mm\)  -
\(s\) - weld speed \(\large{\frac{in}{min}}\) \(\large{\frac{mm}{min}}\)  \(mm - min^{-1}\) -
\(A_{throat}\) - weld, area cross the throat of the weld \(ft^2\) or \(in^2\) \(m^2\) or \(mm^2\) \(m^2\) or \(mm^2\) -
\(\rho_{wb}\) rho wet bulk density of soil \(\large{ \frac{lbm}{ft^3} }\) \(\large{ \frac{kg}{m^3} }\) \(kg - m^{-3}\) -
\(P_w\) - wetted perimeter \(ft\) \(m\)  \(m\) -
\(\zeta\) zeta wet steam dryness fraction dimensionless -
\(h_t\) - wet steam enthalpy \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\) -
\(C_v\) - wet steam flow coefficient dimensionless -
\(\upsilon\) upsilon wet steam specific volume \(\large{\frac{ft^3}{lbm}}\) \(\large{\frac{m^3}{kg}}\) \(m^3 - kg^{-1}\) -
\(M\) - whole number - - - -
\(w\) - width \(ft\) \(m\) \(m\)  -
\(b\)   width, often cross-section \(ft\) or \(in\) \(m\) or \(mm\)  \(m\) or \(mm\) -
\(b_f\) - width of the flange of a steel beam cross-section \(in\) \(mm\)  \(mm\) -
\(T_{wc}\) - wind chill factor dimensionless -
\(E\) - wind energy \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\)  -
\(\alpha\) alpha Womersley number dimensionless -
\(W\) - work \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\) -
\(W\) - work done by gas \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\) -
\(W\) - work done on a system \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\) -
\(W\) - work-energy theorem \(\large{ \frac{ft^3}{sec} }\) \(\large{ \frac{m^3}{s} }\) \(m^3 - s^{-1}\) -
\(\phi\) phi work function - - - -
\(W\) - work per unit mass \(lbf-ft\) \(J\) \(kg - m^2 - s^{-2}\) -
Symbol Greek Symbol Definition English Metric   Value

 

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