Formula Symbols - W
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Formula Symbols
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W
Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
---|---|---|---|---|---|---|
\(\frac{m_w}{m_z}\) | - | 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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