Formula Symbols - F

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

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

F

SymbolGreek SymbolDefinitionEnglishMetricSIValue
\(K\) - factor - - - -
\(FS\), \(\;FOS\) - factor of safety dimensionless  -
\(F\), \(\;T_F\) - Fahrenheit \(F\) -  - -
\(\eta_f\) eta fan efficiency dimensionless -
\(FHP\), \(\;HP_f\) - fan horsepower \(\large{\frac{lbf-ft}{sec}}\) \(\large{\frac{Btu}{s}}\) \(Btu-s^{-1}\)  -
\(n\) - fan speed \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(f\) - Fanning friction factor dimensionless  -
\(Fa\) - Faraday constant - \(\large{\frac{C}{mol}}\) \(C-mol^{-1}\)  \(96\;485.332\;12...\) \(\large{\frac{C}{mol^{-1}}}\)
- - Faraday's law of induction - - - -
\(k_f\) - Fermi angular wavevector - - -  -
\(G_f\) - Fermi coupling constant \(\large{\frac{lbf-ft}{ft^3}}\) \(\large{\frac{J}{m^3}}\) \(J-m^{-3}\) \(1.435\;x\;10^{-36}\) \(J-m^{-3}\)
\(E_f\) - Fermi energy \(lbf-ft\) \(J\) \(kg-m^2-s^{-2}\)  -
\(f_f\) - Fermi force \(lbf\) \(N\) \(kg-m-s^{-2}\) -
\(p_f\) - Fermi momentum \(\large{\frac{lbm-ft}{sec}}\) \(\large{\frac{kg-m}{s}}\) \(kg-m-s^{-1}\) -
\(r_f\) - Fermi repulsion - - - -
\(v_f\) - Fermi velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\) -
\(h\) - film coefficient \(\large{\frac{Btu}{ft^2-hr-F}}\) \(\large{\frac{W}{m^2-K}}\) \(W-m^{-2}-K^{-1}\)  -
\(h\) - film thickness \(in\) \(mm\) \(mm\)   -
\(a_f\) - final acceleration \(\large{\frac{ft}{sec^2}}\) \(\large{\frac{m}{s^2}}\) \(m-s^{-2}\)  -
\(\omega_f\) omega final angular velocity \(\large{\frac{rad}{sec}}\) \(\large{\frac{rad}{s}}\) \(rad-s^{-1}\)  -
\(l_f\) - final length \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\)   -
\(x_f\) - final position \(ft\) or \(in\) \(m\) or \(mm\) \(m\) or \(mm\)   -
\(T_f\) - final temperature \(F\) \(C\) \(x+273.15\;K\)  -
\(t_f\) - final time \(sec\) \(s\) \(s\)   -
\(v_f\) - final velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(V_f\) - final volume \(ft^3\) or \(in^3\) \(m^3\) or \(mm^3\)  \(m^3\) or \(mm^3\)  -
\(\alpha\) alpha fine structure constant dimensionless constant \(7.297\;352\;5693\;x\;10^{-3}\)
\(\Delta U\) - first law of thermodynamics  - - - -
\(Q\) - first moment of area \(in^4\) \(mm^4\) \(mm^4\)  -
\(c_1\) - first radiation constant - \(\large{\frac{W}{m^2}}\) \(W-m^{-2}\)  \(3.741\;771\;852...\;x\;10^{-16}\) \(\large{\frac{W}{m^2}}\)
\(t_f\) - flange thickness \(in\) \(mm\) \(mm\)   
\(FS\) - flash steam \(\large{\frac{lbf}{in^2}}\) \(\large{\frac{kg}{mm^2}}\) \(kg-mm^{-2}\)   -
\(T\) - flight time \(hr\) \(hr\) -  -
\(q\) - flow \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(C_v\), \(\;K_v\) - flow coefficient dimensionless  -
\(Q\) - flow rate \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q\) - flow rate capacity \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_a\) - flow rate of air \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_s\) - flow rate of steam \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q_w\) - flow rate of water \(\large{\frac{ft^3}{sec}}\) \(\large{\frac{m^3}{s}}\) \(m^3-s^{-1}\)  -
\(Q\), \(\;V\) - flow velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(P_c\) - fluid critical pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   -
\(\rho_f\) rho fluid density \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\) \(kg-m^{-3}\)  -
\(p\) - fluid pressure at depth \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(h\) - fluid head \(ft\) \(m\) \(m\)  -
\(\Delta E\) - fluid mehanical energy loss \(lbf-ft\) \(J\) \(kg-m^2-s^{-2}\)   -
\(p\) - fluid pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(p\) - fluid pressure at depth \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   
\(\xi\) xi fluid resistance coefficient dimensionless  -
\(P_v\) - fluid vapor pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)   -
\(v\) - fluid velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(\Delta v_f\) - fluid velocity change \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\( F\) - force \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F_d\), \(\;\Delta F\) delta force differential \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F\) - force exerted by contracting or stretching a material \(lbf\) \(N\)  \(kg-m-s^{-2}\) -
\(F_a\) - force of air resistance or drag \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(P\) - force of impression \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(F\) - formality - - -  -
\(FW\) - formula weight \(lbf\) \(N\) \(kg-m-s^{-2}\)   -
\(Fo\) - Fourier number dimensionless  -
\(g\) - Fourier's law - - - -
\(x\) - fraction - - -  -
\(M\) - fraction moisture dimensionless -
\(d_{\infty}\)  - free steam density \(\large{\frac{lbm}{ft^3}}\) \(\large{\frac{kg}{m^3}}\)  \(kg-m^{-3}\)  -
\(\rho_{\infty}\) rho  free steam pressure \(\large{\frac{lbf}{in^2}}\) \(Pa\) \(kg-m^{-1}-s^{-2}\)  -
\(v_{\infty}\)  - free steam velocity \(\large{\frac{ft}{sec}}\) \(\large{\frac{m}{s}}\) \(m-s^{-1}\)  -
\(F\) - Fresnel number dimensionless  -
\(f\), \(\;\nu\) nu frequency \(Hz\) \(Hz\)  \(s^{-1}\)   -
\(Q\) - fresh air introduction rate - - - -
\(f\) - friction \(lbf\) \(N\) \(kg-m-s^{-2}\)  -
\(\mu\) mu friction coefficient dimensionless  -
\(h_fd\)   friction discharge head \(ft\) \(m\) \(m\)  -
\(f\) - friction factor dimensionless  -
\(F_f\) - friction force - - -  -
\( FHP\) - friction horsepower \(hp\) \(hp\) \(watt\)  -
\(FL\) - friction loss \(lbf\) \(N\) \(kg-m-s^{-2}\) -
\(\xi\), \(\;C\) xi friction loss coefficient dimensionless -
\( FP\) - friction pressure - - -  -
\(f\) - fraction split dimensionless -
\(h_{fs}\)   friction suction head - - -  -
\(RA\) - fractional reduction in area \(ft^2\) or \(in^2\) \(m^2\) or \(mm^2\)  \(m^2\) or \(mm^2\)  -
\(F\) - Fresnel number dimensionless  -
\(Fo\) - Fourier number dimensionless  -
\(Fr\) - Froude number dimensionless  -
\(FAR\) - fuel-air ratio - - -  -
\(s'\) - fuel economy \(\large{\frac{mi}{gal}}\) \(\large{\frac{km}{L}}\) \(km-L^{-1}\)  -
\(m_f\) - fuel mixture - - -  -
\(FU\) - fuel utilization - - -  -
\(f\) - function - - -  -
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

 

Piping Designer Logo Slide 1