pygasflow v1.3.0

What's Changed

• Added global option pygasflow.defaults.solver_to_dict in order to force all solvers to return a dictionary of results if it's set to True.

• Added new functions:

  • gas_solver
  • ideal_gas_solver
  • sonic_condition
  • normal_shockwave_solver
  • oblique_shockwave_solver as an alias to the old name shockwave_solver. This new name makes it impossible to confuse it with other shockwave solvers.

• Added a new sub-module, pygasflow.interactive, which provides a web-based GUI (graphical user interface) to many of the functionalities of the module, implemented with holoviz panel. The GUI allows:

  • for an easier and non-programmatic way of getting quick results.
  • to easily explore different configurations.
  • reliability: over the years there have been many web-based compressible flow GUIs on the internet. However, they are not guaranteed to exists forever. On the other hand, this sub-module is part of pygasflow, and it will always be readily available should the user needs it.

• Added a new sub-module, pygasflow.interactive.diagram, which provides functionalities to quickly creates diagram related to compressible flows, like isentropic diagram, Fanno diagram, oblique shock diagram, shock polar diagram, etc.

• Added PressureDeflectionLocus and PressureDeflectionDiagram to easily create pressure-deflection diagrams and compute related quantities.

• Improved reliability of sonic_point_oblique_shock and sonic_point_conical_shock.

• Fixed bug with oblique_shockwave_solver and propagation of the specific heats ratio when the flow deflection angle and the shock wave angle were provided as input arguments.

• Fixed bug with m_from_critical_temperature_ratio and propagation of the specific heats ratio.

• Fixed bug with mach_from_theta_beta, which computed a wrong Mach number for the special case beta=90, theta=0.

• Fixed bug with some functions that computed wrong results when integer numbers were provided as arguments.

• Fixed bug with shock_polar and propagation of a parameter to other functions.

• Fixed functions that raised RuntimeWarning: divide by zero encountered in divide.

• Fixed bug with data not being loaded by the module.

• DEPRECATIONS: here is a list of newly introduced deprecations. See this documentation page to understand the motivations.

  • The following is a list of parameter names used by oblique_shockwave_solver and conical_shockwave_solver which are now deprecated:

    • "m1" indicated the upstream Mach number. "mu" should be used instead.
    • "mn1" indicated the upstream normal Mach number. "mnu" should be used instead.
    • "m2" indicated the downstream Mach number. "md" should be used instead.
    • "mn2" indicated the downstream normal Mach number. "mnd" should be used instead.
    • "m" indicated the upstream Mach number of a conical shock wave.
      "mu" should be used instead.

    These changes also applies to the dictionary of results, if the solver was executed with the keyword argument to_dict=True.

  • beta_theta_max_for_unit_mach_downstream has been deprecated in favor of sonic_point_oblique_shock.

  • beta_from_mach_max_theta has been deprecated in favor of detachment_point_oblique_shock.

  • beta_theta_c_for_unit_mach_downstream has been deprecated in favor of sonic_point_conical_shock.

• BREAKING:

  • Removed classes Ideal_Gas and Flow_State from pygasflow.utils.common as no longer useful to the module.
  • Refactoring of pygasflow.nozzles and pygasflow.solver.de_laval in order to use the holoviz param module, which allows for a more robust code base while also providing the foundation for interactive applications. In particular, De_Laval_Solver, CD_Conical_Nozzle, CD_TOP_Nozzle, CD_Min_Length_Nozzle are no longer compatible with previous versions of the module.

pygasflow v1.3.0rc1

added python 3.13 to tests

pygasflow v1.2.2

removing python 3.13 as cantera is still no ready

pygasflow v1.2.1

What's Changed

• Fix import for aerothermodynamics sub-module.
• Updated doctest outputs to the format used by NumPy >= 2.0.0.

pygasflow v1.2.0

What's Changed

• Added oblique_mach_downstream to pygasflow.shockwave. Thank you Dr. Chad File for this contribution.
• Added support for Numpy >= 2.0.0. Thank you David Chartrand for this contribution.
• Fixed conda packaging.

pygasflow v1.1.1

What's Changed

Included build for Python 3.11.

pygasflow v1.1.0

What's Changed

• Added aliases to solvers:

  • ise for isentropic_solver.
  • fan for fanno_solver.
  • ray for rayleigh_solver.
  • ss for shockwave_solver.
  • css for conical_shockwave_solver.

• Added Aerothermodynamic module (pygasflow.atd):

  • correlations to compute boundary layer thickness, heat flux, wall shear stress.
  • functions to compute the pressure distribution and aerodynamic characteristics with the Newtonian (and modified Newtonian) flow theory.

pygasflow v1.0.6

What's Changed

• added to_dict keyword argument to solvers.
• Improved doctests
• Added latex equations to ReadTheDocs documentation
• Added examples to ReadTheDocs documentation
• Added linkcode resolve to documentation

pygasflow v1.0.5

What's Changed

• Updated README
• Released conda and pypi packages

pygasflow v1.0.2

What's Changed

• Added Sphinx Documentation and doctests.
• Added plot method to nozzles.
• Improved Tests.