Slice at an axial position (x-coordinate)

Cut at an axial position

Parameters

  • base: Base

    The base must contain:

    • the mesh coordinates x, y, and z

    • the solution

    • ‘hb_computation’ as an Base.attrs (if HB/TSM type).

  • vectors: tuple/list(tuple(str)), default= []

    Component names of vectors that need to be rotated. It is assumed that these are given in the cartesian coordinate system.

  • nb_duplication: int, default= ‘in_attr’

    number of duplications to apply after doing the axial cut if duplicate is True. If set to ‘in_attr’, then it is computed from ‘nb_blade’ in Instant.attrs.

  • duplicate: bool, default= False

    Duplication of the axial cut. Chorochronic if HB/TSM type.

  • family_name: str

    The name of the family from which the percent will be computed and on which the cut is computed.

  • percent: float, default= None

    The percentage relative to the family to determine the absolute position value of the cut.

  • position: float, default= None

    The absolute position value relative to the family where the cut must be made.

Main functions

class antares.treatment.turbomachine.TreatmentSliceX.TreatmentSliceX
execute()

Execute the treatment.

This method performs a cut at an axial position. Either the value of the axial position is given, or it is computed knowing the family name and the percentage. The latter are used to determine the absolute position of the cut.

Then, you can make a simple duplication or a chorochronic duplication of this cut.

Warning

The axial coordinate should be named ‘x’.

Returns

Return type

None or Base

Example

import os

if not os.path.isdir('OUTPUT'):
    os.makedirs('OUTPUT')

import numpy as np

from antares import Reader, Treatment, Writer

#

# Data can be downloaded from
# https://cerfacs.fr/antares/downloads/application1_tutorial_data.tgz

r = Reader('bin_tp')
r['filename'] = os.path.join('..', 'data', 'ROTOR37', 'ELSA_CASE', 'MESH',
                             'mesh_<zone>.dat')
r['zone_prefix'] = 'Block'
r['topology_file'] = os.path.join('..', 'data', 'ROTOR37', 'ELSA_CASE',
                                  'script_topo.py')
r['shared'] = True
base = r.read()
print(base.families)

r = Reader('bin_tp')
r['base'] = base
r['filename'] = os.path.join('..', 'data', 'ROTOR37', 'ELSA_CASE', 'FLOW',
                             'flow_<zone>.dat')
r['zone_prefix'] = 'Block'
r['location'] = 'cell'
r.read()

base.set_computer_model('internal')

# Needed for turbomachinery dedicated treatments
base.cell_to_node()
base = base.get_location('node')
print(base.families)

base.compute('psta')
base.compute('Pi')
base.compute('theta')
P0_INF = 1.9
base.compute('MachIs = (((%f/psta)**((gamma-1)/gamma)-1.) * (2./(gamma-1.))  )**0.5' % P0_INF)

res_dir = os.path.join('OUTPUT', 'SLICEX')
if not os.path.isdir(res_dir):
    os.makedirs(res_dir)

t = Treatment('slicex')
t['base'] = base
t['family_name'] = 'BLADE'

writer = Writer('bin_tp')

NUM = 9
x = np.linspace(-12.5, 12.5, NUM)
for i in range(0, NUM):
    print('cut at x = {}'.format(x[i]))

    t['position'] = x[i]
    base = t.execute()

    writer['filename'] = os.path.join(res_dir, 'slicex_%i.plt' % x[i])
    writer['base'] = base
    writer.dump()