cfdpost 0.2.1

# cfdpost

CFD post procedures.

## # post

Frequently used CFD post procedures.

### [ post_foil_cfl3d ]

post_foil_cfl3d(path, j0, j1, nHi=40, fname=’feature2d.txt’)

Read in CFL3D foil result and extract flow features.

path: folder that contains the output files j0: j index of the lower surface TE j1: j index of the upper surface TE nHi: maximum number of mesh points in k direction for boundary layer fname: output file name. If None, then no output tecplot: if True, then convert cfl3d.prt to surface.dat

Single C-block cfl3d.prt index

i : 1 - 1 symmetry plane j : 1 - nj far field of lower surface TE to far field of upper surface TE k : 1 - nk surface to far field

### [ feature_xfoil ]

feature_xfoil(cst_u, cst_l, t, Minf, Re, AoA, n_crit=0.1, fname=’feature-xfoil.txt’)

Evaluate by xfoil and extract features.

cst-u, cst-l: list of upper/lower CST coefficients of the airfoil. t: airfoil thickness or None Minf: free stream Mach number for wall Mach number calculation Re, AoA (deg): flight condition (s), float or list, for Xfoil n_crit: critical amplification ratio for transition in xfoil fname: output file name. If None, then no output

Dependencies:

cst_modeling pip install cst-modeling3d xfoil pip install xfoil

XFoil:

Re: Reynolds number in case the simulation is for a viscous flow.

In case not informed, the code will assume inviscid.

Minf: Mach number in case the simulation has to take in account compressibility

effects through the Prandtl-Glauert correlation. If not informed, the code will not use the correction. For logical reasons, if Mach is informed, a Reynolds number different from zero must also be informed.

### [ feature_TSFoil ]

Evaluate by TSFOIL2 and extract features.

cst-u, cst-l: list of upper/lower CST coefficients of the airfoil t: airfoil thickness or None Minf, Re, AoA (deg): flight condition (s), float or list fname: output file name. If None, then no output

Dependencies:

cst_modeling pip install cst-modeling3d pyTSFoil pip install pyTSFoil

## # cfdresult

Read in CFD results.

### cfl3d

Read in CFL3D results.

## # feature2d

Extract 2D flow features.

### FeatureSec

Extract flow features of airfoils or wing sections.

### FeatureXfoil

Extract features from Xfoil (low speed) results.

### FeatureTSFoil

Extract features from pyTSFoil (transonic speed) results.