2.8. Convert \(f(T, V)\) to \(f(T,P)\)

This module will convert a function \(f\) of volume (\(V\)) and temperature (\(T\)), e.g., convert \(G(T, V)\) to the function of temperature and pressure, i.e., to \(G(T, P)\).

qha.v2p.v2p(func_of_t_v, p_of_t_v, desired_pressures)

Obtain \(f(T, P)\) given \(f(T, V)\) and \(P(T, V)\) by doing a fourth-order Lagrangian interpolation.

Parameters

• func_of_t_v (array(float64, 2d, A)) – Any function \(f\) on \((T, V)\) grid, which has shape: (number of temperature, number of volumes).

• p_of_t_v (array(float64, 2d, A)) – Pressures on \((T, V)\) grid, which has shape: (number of temperature, number of volumes).

• desired_pressures (array(float64, 1d, A)) – A vector of pressures which user wants to apply.

Return type

array(float64, 2d, A)

Returns

The interpolated function \(f\) on \((T, P)\) grid.