erfc ( x ) = 2 π ∫ x ∞ e − t 2 d t = e − x 2 x π ∑ n = 0 ∞ ( − 1 ) n ( 2 n ) ! n ! ( 2 x ) 2 n {\displaystyle \operatorname {erfc} (x)={\frac {2}{\sqrt {\pi }}}\int _{x}^{\infty }e^{-t^{2}}\,dt={\frac {e^{-x^{2}}}{x{\sqrt {\pi }}}}\sum _{n=0}^{\infty }(-1)^{n}{\frac {(2n)!}{n!(2x)^{2n}}}} SpecificFlux = F l u x × T C F N D P {\displaystyle \operatorname {SpecificFlux} ={\frac {Flux\times TCF}{NDP}}}
Where: TCF = e x {\displaystyle \operatorname {TCF} =e^{x}} x = u ( 1 T + 273 − 1 298 ) {\displaystyle x=u\left({\frac {1}{T+273}}-{\frac {1}{298}}\right)} NDP = Net Driving Pressure x = u ( 1 T + 273 − 1 298 ) {\displaystyle x=u\left({\frac {1}{T+273}}-{\frac {1}{298}}\right)}
