Phase boundaries line on the plane calculation procedures.
| Type | Visibility | Attributes | Name | Initial | |||
|---|---|---|---|---|---|---|---|
| real(kind=pr), | private | :: | Vy |
Incipient phase volume [L/mol] |
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| real(kind=pr), | private | :: | Vz |
Main phase volume [L/mol] |
Critical point
| Type | Visibility | Attributes | Name | Initial | |||
|---|---|---|---|---|---|---|---|
| real(kind=pr), | public | :: | P |
Pressure [bar] |
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| real(kind=pr), | public | :: | alpha |
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Two-phase PX envelope. Phase boundary line of a fluid at constant temperature with variation in composition.
| Type | Visibility | Attributes | Name | Initial | |||
|---|---|---|---|---|---|---|---|
| real(kind=pr), | public, | allocatable | :: | alpha(:) |
Second fluid molar fraction |
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| type(CriticalPoint), | public, | allocatable | :: | cps(:) |
Critical points found along the line. |
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| type(EquilibriumState), | public, | allocatable | :: | points(:) |
Each point through the line. |
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| real(kind=pr), | public, | allocatable | :: | z0(:) |
Original fluid composition |
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| real(kind=pr), | public, | allocatable | :: | z_inj(:) |
Second fluid composition |
PX two-phase envelope calculation procedure.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(ArModel), | intent(in) | :: | model |
Thermodyanmic model |
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| real(kind=pr), | intent(in) | :: | z0(:) |
Vector of molar fractions of the global composition (main phase) |
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| real(kind=pr), | intent(in) | :: | alpha0 |
First point of |
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| real(kind=pr), | intent(in) | :: | z_injection(:) |
Vector of molar fractions of the injection fluid |
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| type(EquilibriumState) | :: | first_point | ||||
| integer, | intent(in), | optional | :: | points |
Maxmimum number of points, defaults to 500 |
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| integer, | intent(in), | optional | :: | iterations |
Point solver maximum iterations, defaults to 100 |
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| real(kind=pr), | intent(in), | optional | :: | delta_0 |
Initial extrapolation |
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| integer, | intent(in), | optional | :: | specified_variable_0 |
Position of specified variable, since the vector of variables is the values for specification will be for the equilibria constants, for and for . |
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| procedure(continuation_solver), | optional | :: | solver |
Specify solver for each point, defaults to a full newton procedure |
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| procedure(continuation_stopper), | optional | :: | stop_conditions |
Function that returns true if the continuation method should stop |
Calculate the fluid composition based on an amount of addition of second fluid.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=pr), | intent(in) | :: | alpha |
Addition percentaje |
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| real(kind=pr), | intent(in) | :: | z_0(:) | |||
| real(kind=pr), | intent(in) | :: | z_inj(:) | |||
| real(kind=pr), | intent(out) | :: | z(size(z_0)) |
New composition |
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| real(kind=pr), | intent(out), | optional | :: | dzda(size(z_0)) |
Derivative wrt |