92 lines
3.8 KiB
Python
92 lines
3.8 KiB
Python
# ***************************************************************************
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# * Copyright (c) 2021 Bernd Hahnebach <bernd@bimstatik.org> *
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# * *
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# * This file is part of the FreeCAD CAx development system. *
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# * *
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# * This program is free software; you can redistribute it and/or modify *
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# * it under the terms of the GNU Lesser General Public License (LGPL) *
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# * as published by the Free Software Foundation; either version 2 of *
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# * the License, or (at your option) any later version. *
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# * for detail see the LICENCE text file. *
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# * *
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# * This program is distributed in the hope that it will be useful, *
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# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
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# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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# * GNU Library General Public License for more details. *
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# * *
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# * You should have received a copy of the GNU Library General Public *
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# * License along with this program; if not, write to the Free Software *
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# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
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# * USA *
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# * *
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# ***************************************************************************
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__title__ = "FreeCAD FEM calculix constraint heatflux"
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__author__ = "Bernd Hahnebach"
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__url__ = "https://www.freecad.org"
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def get_analysis_types():
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return ["thermomech"]
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def get_sets_name():
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return "constraints_heatflux_element_face_heatflux"
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def get_before_write_meshdata_constraint():
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return ""
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def get_after_write_meshdata_constraint():
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return ""
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def write_meshdata_constraint(f, femobj, heatflux_obj, ccxwriter):
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# floats read from ccx should use {:.13G}, see comment in writer module
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if heatflux_obj.ConstraintType == "Convection":
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heatflux_key_word = "FILM"
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heatflux_facetype = "F"
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heatflux_facesubtype = ""
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heatflux_values = "{:.13G},{:.13G}".format(
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heatflux_obj.AmbientTemp.getValueAs("K").Value,
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heatflux_obj.FilmCoef.getValueAs("t/s^3/K").Value,
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)
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elif heatflux_obj.ConstraintType == "Radiation":
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heatflux_facetype = "R"
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if heatflux_obj.CavityRadiation:
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heatflux_key_word = f"RADIATE, CAVITY={heatflux_obj.CavityName}"
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heatflux_facesubtype = "CR"
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else:
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heatflux_key_word = "RADIATE"
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heatflux_facesubtype = ""
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heatflux_values = "{:.13G},{:.13G}".format(
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heatflux_obj.AmbientTemp.getValueAs("K").Value, heatflux_obj.Emissivity
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)
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elif heatflux_obj.ConstraintType == "DFlux":
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heatflux_key_word = "DFLUX"
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heatflux_facetype = "S"
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heatflux_facesubtype = ""
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heatflux_values = "{:.13G}".format(heatflux_obj.DFlux.getValueAs("t/s^3").Value)
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else:
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return
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if heatflux_obj.EnableAmplitude:
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heatflux_amplitude = f", AMPLITUDE={heatflux_obj.Name}"
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else:
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heatflux_amplitude = ""
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f.write(f"*{heatflux_key_word}{heatflux_amplitude}\n")
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for ref_shape in femobj["HeatFluxFaceTable"]:
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elem_string = ref_shape[0]
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face_table = ref_shape[1]
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f.write(f"** Heat flux on face {elem_string}\n")
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for i in face_table:
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# OvG: Only write out the VolumeIDs linked to a particular face
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f.write(f"{i[0]},{heatflux_facetype}{i[1]}{heatflux_facesubtype},{heatflux_values}\n")
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