aerosandbox.aerodynamics.aero_2D.mses#

Module Contents#

Classes#

MSES

An interface to MSES, MSET, and MPLOT, a 2D airfoil analysis system developed by Mark Drela at MIT.

Attributes#

ms

class aerosandbox.aerodynamics.aero_2D.mses.MSES(airfoil, n_crit=9.0, xtr_upper=1.0, xtr_lower=1.0, max_iter=100, mset_command='mset', mses_command='mses', mplot_command='mplot', use_xvfb=None, xvfb_command='xvfb-run -a', verbosity=1, timeout_mset=10, timeout_mses=60, timeout_mplot=10, working_directory=None, behavior_after_unconverged_run='reinitialize', mset_alpha=0, mset_n=141, mset_e=0.4, mset_io=37, mset_x=0.85, mses_mcrit=0.99, mses_mucon=-1.0)[source]#

Bases: aerosandbox.common.ExplicitAnalysis

An interface to MSES, MSET, and MPLOT, a 2D airfoil analysis system developed by Mark Drela at MIT.

Requires compiled binaries for all the programs to be on your computer; MSES is available here: https://web.mit.edu/drela/Public/web/mses/ Academics can get a copy by emailing the MIT Tech. Licensing Office; MIT affiliates can find a copy on Athena.

It is recommended (but not required) that you add MSES, MSET, and MPLOT to your system PATH environment variable such that they can be called with the commands mses, mset, and mplot. If this is not the case, you need to specify the path to these executables using the command arguments of the constructor.

Note that MSES, MSET, and MPLOT by default open up X11 windows on your computer. If you prefer that this doesn’t happen (for extra speed), or if you cannot have this happen (e.g., you are computing in an environment without proper X11 support, like Windows Subsystem for Linux), you should use XVFB. https://en.wikipedia.org/wiki/Xvfb

XVFB is a virtual “display” server that can receive X11 output and safely dump it. (If you don’t use XVFB and you don’t have proper X11 support on your computer, this AeroSandbox MSES module will simply error out during the MSET call - probably not what you want.)

To install XVFB on a Linux machine, use:

`bash sudo apt-get install xvfb `

Then, when instantiating this MSES instance in AeroSandbox, pass the use_xvfb flag to be True. Default behavior here is that this class will look for the XVFB executable, xvfb-run, on your machine. If it finds it, it will run with XVFB enabled. If it does not, it will run without XVFB.

Usage example:

>>> ms = MSES(
>>>     airfoil=Airfoil("naca2412").repanel(n_points_per_side=100),
>>>     Re=1e6,
>>>     mach=0.2,
>>> )
>>>
>>> result_at_single_alpha = ms.alpha(5)
>>> #result_at_several_CLs = ms.cl([0.5, 0.7, 0.8, 0.9])
>>> result_at_multiple_alphas = ms.alpha([3, 5, 60]) # Note: if a result does not converge (such as the 60 degree case here), it will not be included in the results.
Parameters:

  • airfoil (aerosandbox.geometry.Airfoil) –

  • n_crit (float) –

  • xtr_upper (float) –

  • xtr_lower (float) –

  • max_iter (int) –

  • mset_command (str) –

  • mses_command (str) –

  • mplot_command (str) –

  • use_xvfb (bool) –

  • xvfb_command (str) –

  • verbosity (int) –

  • timeout_mset (Union[float, int, None]) –

  • timeout_mses (Union[float, int, None]) –

  • timeout_mplot (Union[float, int, None]) –

  • working_directory (str) –

  • behavior_after_unconverged_run (str) –

  • mset_alpha (float) –

  • mset_n (int) –

  • mset_e (float) –

  • mset_io (int) –

  • mset_x (float) –

  • mses_mcrit (float) –

  • mses_mucon (float) –

run(alpha=0.0, Re=0.0, mach=0.01)[source]#
Parameters:

  • alpha (Union[float, aerosandbox.numpy.ndarray, List]) –

  • Re (Union[float, aerosandbox.numpy.ndarray, List]) –

  • mach (Union[float, aerosandbox.numpy.ndarray, List]) –

aerosandbox.aerodynamics.aero_2D.mses.ms[source]#