Formula Symbols - O
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Formula Symbols
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O
| Symbol | Greek Symbol | Definition | English | Metric | SI | Value |
|---|---|---|---|---|---|---|
| \(\rho_o\) | rho | object density | \(\large{\frac{lbm}{ft^3}}\) | \(\large{\frac{kg}{m^3}}\) | \(kg-m^{-3}\) | - |
| \(ON\) | - | octane number | dimensionless | - | ||
| \(x\) | - | offset distance | \(ft\) | \(m\) | \(m\) | - |
| \(T\) | - | offset motion | - | - | - | - |
| \(R\) | - | ohm | - | - | - | - |
| \(Oh\) | - | Ohnesorge number | dimensionless | - | ||
| \(\Omega\) | omega | ohm | - | - | - | - |
| - | - | Ohm's law | - | - | - | - |
| \(1D\) | - | one-dimension | - | - | - | - |
| \(L\), \(\;l_i\) | - | orbital angular momentum | - | - | - | - |
| \(n\) | - | order of reflexion | - | - | - | - |
| \(A_o\) | - | orifice area | \(in^2\) | \(mm^2\) | \(mm^2\) | - |
| \(h\) | - | orifice center of head | \(in\) | \(mm\) | \(mm\) | - |
| \(K\) | - | orifice constant | \(gpm-\sqrt{psi}\) | \(\large{\frac{L}{s \sqrt{kPa}}}\) | - | - |
| \(C_d\) | - | orifice discharge coefficient | dimensionless | - | ||
| \(Q\) | - | orifice flow rate | \(\large{\frac{ft^3}{sec}}\) | \(\large{\frac{m^3}{s}}\) | \(m^3-s^{-1}\) | - |
| \(G\) | - | orifice gravitational constant | \(\large{\frac{lbf-ft^2}{lbm^2}}\) | \(\large{\frac{N - m^2}{kg^2}}\) | \(N-m^2-kg^{-2}\) | - |
| \(l_o\) | - | origional length | \(ft\) or \(m\) | \(in\) or \(mm\) | \(in\) or \(mm\) | - |
| \(f_o\) | - | orthogonal force | \(lbf\) | \(N\) | \(kg-m-s^{-2}\) | - |
| \(\pi \) | pi | osmotic pressure | \(\large{\frac{lbf}{ft^2}}\) | \(Pa\) | \(kg-m^{-1}-s^{-2}\) | - |
| \(p_o\) | - | outlet pressure | \(\large{\frac{lbf}{in^2}}\) | \(Pa\) | \(kg-m^{-1}-s^{-2}\) | - |
| \(E_o\) | - | output energy | \(lbf-ft\) | \(J\) | \(kg-m^2-s^{-2}\) | - |
| \(W_o\) | - | output work | \(lbf-ft\) | \(J\) | \(kg-m^2-s^{-2}\) | - |
| \(OD\) | - | outside diameter | \(in\) | \(mm\) | \(mm\) | - |
| \(OD\) | - | outside diameter of pipe | \(in\) | \(mm\) | \(mm\) | - |
| \(U\) | - | overall coefficient of heat transfer | - | - | - | - |
| \(\eta_0\) | eta | overall efficiency | dimensionless | - | ||
| \(U\) | - | overall heat transfer coefficient | \(\large{\frac{Btu}{hr-ft^2-F}}\) | \(\large{\frac{W}{m^2-K}}\) | \(W-m^{-2}-K^{-1}\) | - |
| Symbol | Greek Symbol | Definition | English | Metric | Value | |
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