This keyword data block is used to define a new solution by mixing previously defined solutions. This keyword simply sums moles of elements to define a new solution that can be used in subsequent simulations; unlike MIX , it does not cause any speciation or reaction calculation.
Line 0: MIX_SOLUTION 2 Mixing SOLUTION 5, 6, and 7.
Line 1a: 5 1.1
Line 1b: 6 0.5
Line 1c: 7 0.3
Line 0: MIX_SOLUTION [number] [description]
MIX_SOLUTION is the keyword for the data block.
number--A positive number designates the new solution user number. Default is 1.
description--Optional comment that describes the mixture.
Line 1: solution number, mixing fraction
solution number--User number of a solution definition.
mixing fraction--Decimal number that is multiplied times the moles of each element in the specified solution definition; the mixture is the sum of each element times its mixing fraction. Mixing fractions may be greater than 1.0.
In mixing, the amount of each element is multiplied by its mixing fraction and a new solution is calculated by summing over all of the fractional solution definitions. In the Example data block, if the moles of Ca in equilibrium phases 5, 6, and 7 were 0.1, 0.2, and 0.3, the moles of Ca in the mixture would be 0.1x1.1+0.2x0.5+0.3x0.3 = 0.3. MIX_SOLUTION is followed only by COPY , DUMP , and DELETE in the sequence of operations of a simulation.
MIX , MIX_EQUILIBRIUM_PHASES , MIX_EXCHANGE , MIX_GAS_PHASE , MIX_KINETICS , MIX_SOLID_SOLUTION , and MIX_SURFACE .