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IAC

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Purpose

Gasoline blending interaction coefficients

Synopsis

IAC(X, V1, ..., Vn, C1 2, C1 3, ..., C1 n, C2 3, ..., C2 n, ..., Cn-1 n)

Arguments

X	Total quantity.
Vi	Quantities of components 1 to n.
Cij	Interaction coefficient between component i and component j (i < j).

Example

Typically X and V_i will be variables (although the V_i could be provided in an XV), and the interaction coefficients C_ij are given in an XV. Given the following matrix items:

Column: TotalGas
Columns: Comp1, Comp2, Comp3, Comp4
XV    : XVIA: = = 2.2
              = = 1.1
              = = 0
              = = -1
              = = 0
              = = 2

then the following formula calculates the interaction adjustment for the blend:

= IAC ( TotalGas , Comp1 , Comp2 , Comp3 , Comp4 , XVIA )

Further information

IAC is always differentiated using numerical methods.

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