.ClaRa.Components.Furnace.BaseClasses.CombustionChamberBase.ParticleMigration .ClaRa.Components.Furnace.BaseClasses.CombustionChamberBase.ParticleMigrationmodel ParticleMigration = ClaRa.Components.Furnace.GeneralTransportPhenomena.ParticleMigration.MeanMigrationSpeed;