Formula Symbols - V
Nomenclature and Symbols Glossary
Algebra Symbols, Angle and Line Symbols, ASCII Characters, Basic Math Symbols, Bracket Symbols, Equivalence Symbols, Geometry Symbols, Greek Alphabet, HTML Colors, Miscellaneous Symbols, Roman Numerals, Set Symbols, Square Root Symbols
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
V
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
|---|---|---|---|---|---|---|
| \(p_v\) | - | vacuum pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(\varepsilon_0\) | varepsilon | vacuum electric permittivity | - | \(\large{\frac{F}{m}}\) | \(F - m^{-1}\) | \(8.854\;187\;8128\;(13)\;x\;10^{-12}\) \(\large{\frac{F}{m}}\) |
| \(\mu_0\) | mu | vacuum magnetic permeability | - | \(\large{\frac{N}{A^2}}\) | \(N - A^{-2}\) | \(1.256\;637\;0614\;x\;10^{-6}\) \(\large{\frac{N}{A^2}}\) |
| \(Va\) | - | Vadasz number | dimensionless | - | ||
| \(C_v\), \(\;K_v\) | - | valve flow coefficient Cv / Kv | dimensionless | - | ||
| \(C_v\), \(\;K_v\) | - | valve flow coefficient for liquid | dimensionless | - | ||
| \(Q\) | - | valve flow rate for liquid | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) | \(m^3 - s^{-1}\) | - |
| \(P_1\) | - | valve inlet pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(P_2\) | - | valve outlet pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(\Delta P\) | - | valve pressure differential for liquid | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(F_o\) | - | valve style modifier | dimensionless | - | ||
| \(C_v\) | - | valve sizing coefficient | - | - | - | - |
| \(Re_v\) | - | valve Reynolds number | dimensionless | - | ||
| - | - | Van der Waals equation | - | - | - | - |
| \(G_{vd}\) | - | vapor density of gas | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) | \(kg - m^{-3}\) | - |
| \(p_v\) | - | vapor pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(p_s\) | - | vapor pressure of the solution | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(p_s^0\) | - | vapor pressure of pure solution | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(x\) | - | vapor quality | dimensionless | - | ||
| \(EHP_v\) | - | vehical engine horsepower | \(\large{ \frac{lbf-ft}{sec} }\) | \(\large{ \frac{J}{s} }\) | \(J-s^{-1}\) | - |
| \(v\) | - | velocity | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(v_{cm}\) | - | velocity center of mass | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(C_v\) | - | velocity coefficient | - | - | - | - |
| - | velocity differential | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - | |
| \(\nu\) | nu | velocity gradient | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(h_v\) | - | velocity head | \(ft\) | \(m\) | \(m\) | - |
| \(c_l\) | - | velocity of longitudinal waves | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(P\) | - | velocity power | \(\large{\frac{lbf-ft}{sec}}\) | \(W\) | \(kg-m^2-s^{-3}\) | - |
| \(c\) | - | velocity of sound | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(c_t\) | - | velocity of transverse waves | - | - | - | - |
| \(v_s\) | - | velocity of steam | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(v_w\) | - | velocity of water | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(\Delta v\) |
- | velocity differential | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(\nu\) | nu | velocity gradient | \(\large{\frac{ft}{sec}}\) | \(\large{\frac{m}{s}}\) | \(m - s^{-1}\) | - |
| \(VP\) | - | velocity pressure | \(\large{\frac{in}{wg}}\) | \(Pa\) | \(kg- m^{-1}-s^{-2}\) | - |
| \(P\), \(\;P_v\) | - | velocity power | \(\large{\frac{lbf-ft}{sec}}\) | \(W\) | \(kg - m^2 - s^{-3}\) | - |
| \(p_{vc}\) | - | vena contracta | \(in\) | \(mm\) | \(mm\) | - |
| \(Q\) | - | venturi meter flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) | \(m^3 - s^{-1}\) | - |
| \(Q\) | - | venturi tube flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) | \(m^3 - s^{-1}\) | - |
| \(y\) | - | vertical distance | \(ft\) | \(m\) | \(m\) | - |
| \(EHP\) | - | vertical engine horsepower | \(\large{ \frac{lbf-ft}{sec} }\) | \(\large{ \frac{J}{s} }\) | \(J - s^{-1}\) | - |
| \(y\) | - | vertical position | \(ft\) | \(m\) | \(mm\) | - |
| \(R\) | - | vertical reaction load at bearing point | \(lbf\) | \(N\) | \(kg - m - s^{-2}\) | - |
| \(V\) | - | vertical shear force | \(lbf\) | \(N\) | \(kg - m - s^{-2}\) | - |
| \(v\) | - | vibrational | - | - | - | - |
| \(\eta\), \(\;\mu\) | eta, mu | viscosity | \(\large{\frac{lbf - sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(\eta\) | eta | viscosity coefficient | \(\large{\frac{lbf - sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(\Delta \eta\), \(\;\eta_d\) | eta | viscosity differential | \(\large{\frac{lbf - sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(VI\) | - | viscosity index | - | - | - | - |
| \(\mu\) | mu | viscosity of a mixture | \(\large{\frac{lbf-sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(\mu_s\) | mu | viscosity of a slurry | \(\large{\frac{lbf-sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(\eta_s\), \(\;\mu_s\) | eta, mu | viscosity of a solution used | \(\large{\frac{lbf - sec}{ft^2}}\) | \(Pa-s\) | \(kg - m^{-1} - s^{-1}\) | - |
| \(\eta\) | eta | viscous force | - | - | - | - |
| \(C\) | - | viscous damping coefficient (linear) | \(\large{\frac{lbf - sec}{ft}}\) | \(\large{\frac{N-s}{m}}\) | \(N-s- m^{-1}\) | - |
| \(C\) | - | viscous damping coefficient (quadratic) | \(\large{\frac{lbf - sec^2}{ft^2}}\) | \(\large{\frac{N-s^2}{m^2}}\) | \(N-s^2- m^{-2}\) | - |
| \(e\) | - | void ratio | dimensionless | - | ||
| \(V\) | - | volt | \(V\) | \(\large{\frac{kg-m^2}{s^{3}-A}}\) | \(kg - m^2 - s^{-3} - A^{-1}\) | - |
| \(V\) | - | voltage (electric) | \(V\) | \(\large{\frac{kg-m^2}{s^{3}-A}}\) | \(kg - m^2 - s^{-3} - A^{-1}\) | - |
| \(VCR\) | - | voltage coefficient of resistance | \(\large{\frac{V}{I}}\) | \(\large{\Omega}\) | \(kg-m^2-s^{-3}-A^{-2}\) | - |
| \(V_o\) | - | voltage diverter | \(V\) | \(\large{\frac{kg-m^2}{s^{3}-A}}\) | \(kg - m^2 - s^{-3} - A^{-1}\) | - |
| \(VD\) | - | voltage drop | \(V\) | \(\large{\frac{kg-m^2}{s^{3}-A}}\) | \(kg - m^2 - s^{-3} - A^{-1}\) | - |
| \(VR\) | - | voltage ratio | dimensionless | - | ||
| \(V\), \(\;\upsilon\) | upsilon | volume | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(V_a\) | - | volume of air | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(V_d\), \(\;\Delta V\) | Delta | volume differential | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(\phi\) | phi | volume fraction | - | - | - | - |
| \(M\), \(\;\vec{M}\) | - | volume magnetization | \(\large{\frac{A}{ft}}\) | \(\large{\frac{A}{m}}\) | \(A - m^{-1}\) | - |
| \(V_s\) | - | volume of solid soil | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(\theta\) | theta | volume strain | - | - | - | - |
| \(V_t\) | - | volume total | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(V_v\) | - | volume of voids | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(V_w\) | - | volume of water | \(ft^3\) or \(in^3\) | \(m^3\) or \(mm^3\) | \(m^3\) or \(mm^3\) | - |
| \(K\) | - | volumetric air/fuel ratio | dimensionless | - | ||
| \(\beta\) | beta | volumetric coefficient of expansion | \(\large{\frac{1}{R}}\) | \(\large{\frac{1}{K}}\) | \(1 - K^{-1}\) | - |
| \(Y\) | - | volumetric density | \(\large{ \frac{lbm}{ft^3} }\) | \(\large{ \frac{kg}{m^3} }\) | \(kg - m^{-3}\) | - |
| \(\eta_v\) | eta | volumetric efficiency | dimensionless | - | ||
| \(Q\), \(\;V \), \(\;\dot {V}\) | - | volumetric flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) | \(m^3 - s^{-1}\) | - |
| \(B\) | - | volumetric fraction | dimensionless | - | ||
| \(\Delta V\) | - | volumetric thermal expansion | \(\large{ \frac{in^3}{in^3\;F} }\) | \(\large{ \frac{mm^3}{mm^3-C} }\) | \(mm^3 - mm^{-3} - C^{-1}\) | - |
| \(\alpha_v\) | alpha | volumetric thermal expansion coefficient | \(\large{ \frac{in^3}{in^3\;F} }\) | \(\large{ \frac{mm^3}{mm^3-C} }\) | \(mm^3 - mm^{-3} - C^{-1}\) | - |
| \(\theta\) | theta | volumetric water content | \(ft^3\) | \(m^3\) | \(m^3\) | - |
| \(k\) | - | von Karman constant | dimensionless constant | universal used 0.40 (between 0.35 and 0.42) | ||
| \(R_k\) | - | von Klitzing constant | \(\Omega\) | \(\Omega\) | \(kg - m^2 - s^-3 - A^-2\) | \(25\;812.807\;4434...\) \(\Omega\) |
| Symbol | Greek Symbol | Definition | English | Metric | Value | |
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
