Nikola Kafedzhiyski

Joined SIT AB to perform Master’s Thesis project on the topic of “Geometrical Variation Effects on the Aeromechanical Behaviour of a Large Aspect Ratio Shrouded Turbine Blade”. The general idea behind the project is to perform a parametric study of the blade chord and area distribution aeromechanic response, while trying to keep the stage aerodynamics unaffected.The main goal of the project is to generate future knowledge on the topic that can be later on used by the Dynamics Department for future designs.

Developed a fatigue life calculation tool serving the current model of Ph.D. candidate Monika Topel and presented in her licentiate thesis “Steam Turbine Thermal Modelling for Improved Transient Operation”. The idea behind the tool is to serve the development of solar powered steam turbines providing quick fatigue life calculation at different start-up and shutdown modes. This research project is based on a Siemens Steam Turbine from Siemens Industrial Turbomachinery AB, Finspång, Sweden

Assistant to the Project Manager on various retrofit and overhaul projects on steam turbines, compressors, expanders and pumps. Later on switched to the Vibration Monitoring Division, supporting the team in the implementation of Vibration Monitoring Systems in different projects.

Specialisation in Structural Vibrations and Fatigue Including Courses in Turbomachinery; Advanced Mechanical Vibrations; Finite Element Method; Computational Fluid Dynamics; Unsteady Aerodynamics; Aeromechanics; Random Vibrations; Health Monitoring; Structural Fatigue

Mechanics; Materials Science; Computing; Strength of Materials; Measurements and Instrumentation; Mechanical Design; Fluid Mechanics; CAD; Measurement Systems; Control Theory; Heat Transfer; Vibration and Dynamics; FEM