.ClaRa_Obsolete.Components.Furnace.BaseClasses.CombustionChamberBase.Geometry .ClaRa_Obsolete.Components.Furnace.BaseClasses.CombustionChamberBase.Geometry1st: choose geometry definition | 2nd: edit corresponding record
model Geometry = ClaRa.Basics.ControlVolumes.Fundamentals.Geometry.HollowBlock;