Fitness of a chromo is the sum of the squares of the error of the correlation

Return a string from the backend for the mixture/fluid - backend dependent - could be CAS #, name, etc.

Returns a list of names of classes that should not be treated like the normal fluids.

Get the mass fractions of the fluid

Get a conversion factor from mass to molar if needed

Makes any array 1-dimensional and implicitly checks the length.

write the member variables that you want to pack Resize all the matrices

Set one of the matrices in this class

Set the array of coefficients.

Set the reducing temperature to be used

Solve a trial phase's density at fixed (T, p) for its current composition, WARM-STARTED from the previous root (rho_warm). The stability TPD trajecto

A convenience function that return true if a string begins with the given other string

Take all the vectors that are in the class and unpack them from the vectors map

In the secant function, a 1-D Newton-Raphson solver is implemented. An initial guess for the solution is provided. @param f A pointer to an instance

In this formulation of the Multi-Dimensional Newton-Raphson solver the Jacobian matrix is known. Therefore, the dx vector can be obtained from J(x)dx

Freezing temperature as a function of pressure and composition.

Calculates a property from a given set of coefficients for a certain temperature. Is used to obtain data to feed to the optim

p0 : Initial pressure [Pa] T0 : Initial temperatrure [K]

Base function to produce exponential with defined coefficients

Generates limits for the saturation line in either T or p determined by 'kind'. If smin or smax are provided, values will be checked a

Actionable recovery steps when the browser session isn't logged in.

Build a CubicSplineCurve through SAT_KNOTS samples of `f(p)` over log-uniform p ∈ [p_min, p_max]. C² continuous everywhere — no piece-boundary deriva

Per-knot D lower-bound: D at (T, p_target) where p_target is a low-pressure isobar. No walk-down needed here — low p is always reachable for the supp

Calculate the cell boundaries for each fluid

Clenshaw recurrence: evaluate sum_{k=0}^{N} c_k T_k(s) at s.

Thermal conductivity as a function of temperature, pressure and composition.

< The maximum value of the dependent variable Check if a value of the dependent variable is within this interval

Count distinct values in a vector under a relative tolerance. Order-preserving: emits the first occurrence each time. Used by Part 1 and Part 2 (to

dxi/da at the physical point a (analytic). LINEAR : dxi/da = 1 / (a_hi - a_lo) = inv_span_t LOG : dxi/da = 1 / (a * (log a_hi - log a_lo)) POW

Return true if the ancillary is enabled (type is not the default value of MELTING_LINE_NOT_SET)