def __init__(self, Model, settings):

        KratosMultiphysics.Process.__init__(self)

        default_parameters = KratosMultiphysics.Parameters("""
        {
            "model_part_name"                        : "default_model_part_name",
            "perform_corrections"                    : true,
            "correction_frequency_in_time_steps"     : 20,
            "write_to_log_file"                      : true,
            "log_file_name"                          : "mass_conservation.log"
        }  """)

        settings.ValidateAndAssignDefaults(default_parameters)

        self._fluid_model_part = Model[settings["model_part_name"].GetString()]
        self._write_to_log = settings["write_to_log_file"].GetBool()
        self._my_log_file = settings["log_file_name"].GetString()

        self._is_printing_rank = (
            self._fluid_model_part.GetCommunicator().MyPID() == 0)
        self.mass_conservation_check_process = KratosFluid.MassConservationCheckProcess(
            self._fluid_model_part, settings)

        if self._is_printing_rank:
            KratosMultiphysics.Logger.PrintInfo(
                "ApplyMassConservationCheckProcess", "Construction finished.")
    def __init__(self, Model, settings):

        KratosMultiphysics.Process.__init__(self)

        default_parameters = KratosMultiphysics.Parameters("""
        {
            "model_part_name"                        : "default_model_part_name",
            "mass_computation_frequency"             : 20,
            "compare_to_initial_values"              : true,
            "write_to_log_file"                      : true
        }  """)

        settings.ValidateAndAssignDefaults(default_parameters)

        self.fluid_model_part = Model[settings["model_part_name"].GetString()]
        self.write_to_log = settings["write_to_log_file"].GetBool()
        self.mass_conservation_check_process = KratosFluid.MassConservationCheckProcess(
            self.fluid_model_part, settings)

        # writing first line in file
        if (self.write_to_log):
            with open("ApplyMassConservationCheckProcess.log", "w") as logFile:
                logFile.write("positiveVolume" + "\t" + "negativeVolume" +
                              "\n")