Changelog & Release Notes

Upgrading

To upgrade to the latest version of flowdyn use pip:

pip install flowdyn --upgrade

You can determine your currently installed version using this command:

pip show flowdyn

Versions

1.3.1 (2022-03-03)

new features

• integration.restart function similar to integration.solve without initialization
• solution lists fieldlist has new .extend() function
• new xtcontour and xtcontourfplots from fieldlist

changed

• monitors outputs are removed when using integration.solve

fixed

• add support of python 3.10
• fix outputs if (tsave) times before first solution time

1.3.0 (2021-11-05)

new features

• Finite Volume method on 2D cartesian grids
• 'extrapol2d1' and 'extrapol2dk' linear extrapolation (1st to 3rd order)
• geometric symmetry or periodic conditions, or model based
• euler 2d model on cartesian grids
• 'hlle' and 'centered' flux
• set of 2d variables
• 'insup', 'insub', 'ousub', 'outsub' conditions
• new subsonic inlet/oulet boundary condition for euler1d model
• insub_cbc with stagnation parameters but more stable
• outsub_rh able to trigger shock wave even in supersonic flow
• field.semilogy('name') for semi-logarithmic plots
• specific fieldlist object output from integration
• monitoring features:
• new monitor data_average
• monitor type handled via monitor name or type
• monitor class provides plotting functions

1.2.0 (2021-06-05)

new features

• shallow water model modelphy.shallowwater
• new subsonic outlet boundary condition for euler1d model
• outsub_prim as a legacy primitive variables set, same as outsub
• outsub_qtot computed with p parameter and ptot and rttot extrapolation
• outsub_nrcbc for non-reflective characteristics conditions
• new option to timemodel.solve: stop parameter with dictionary tottime or maxit
• new monitoring feature to timemodel.solve

fixed

• bad initialization of cpu time computation in show_perf() for successive integration
• fix solution.nozzle for fully supersonic cases

1.1.2 (2021-04-17)

changed

• add asound variable to euler model

fixed

• fix MUSCL vanleer limiter (defective since 1.1.0)

1.1.1 (2021-04-06)

fixed

• bug fix in 1d euler supersonic inlet condition

1.1.0 (2021-03-10)

new features

• Runge-Kutta methods rk2_heunand 'rk3_heun from Heun
• low storage Runge-Kutta (LSRK) methods from Hu and Hussaini
• LSRK implementation of Bogey and Bailly lsrk25bband `lsrk26bb``

changed

• analytical 1D solution for nozzle flows in solution.euler_nozzle
• improve test coverage
• optimize some mesh computation
• allow additional sources in (source based) nozzle euler model
• euler1d and nozzle models have new massflow output variable

fixed

• avoid warnings with vanalbada and vanleer limiters when uniform flows

1.0.1 (2021-01-29)

fixed

• fix computation of modelphy.euler supersonic inlet condition

1.0.0 (2021-01-27)

• models: convection, Burgers, Euler and derived (nozzle)
• Finite Volume method for 1d mesh
• numerical methods: linear 1st to 3rd order extrapolation ; MUSCL method and associated limiters
• integrators: explicit, Runge-Kutta, implicit