- Rapport
- Kärnkraft
Analysis of the Influence Coefficient Matrix for On-site Balancing of Flexible Rotors
If a digital twin could be created and the influence coefficients calculated, the rotor string could instead be modeled, and compensation weights calculated.
Here Professor Rainer Nordmann from Technical University Darmstadt and senior researchers Eric Knopf, Thomas Krueger and Bastien Abrate from GE Power have created a digital twin of the Ringhals turbine train unit TG 32. The modeled influence coefficients have been compared to previously measured influence coefficients.
The project shows that it is not an easy task to calculate the influence coefficients solely based on knowledge on the different components in the rotor string. Information of the stiffness and structural behavior of the entire structure with pedestals, floor etc. is also required.
Rapporter och publikationer
Här listas rapporter och resultatblad från programmet.
- Rapport
Blade Vibrations in Turbines
The main purpose of this Energiforsk project Blade Vibrations in Turbines is to present a clear physical description, how blade vibrations are generated and by which system parameters they are influenced.
|2025:1037Rainer Nordmann, Technical University Darmstadt
- Rapport
Cavitation induced vibrations in orifice plates and a partially closed valve
This study aims to experimentally investigate flow-induced vibrations and cavitation in single-hole and multi-hole orifices and a partially closed Stafsjö valve. The goal is to provide experimental data for validating Computational Fluid Dynamics (CFD) models.
|2025:1105Kristian Angele
- Rapport
Development of a Digital Twin for Torsional Vibrations of Turbogenerators, 2025:1084
This report outlines a Digital Twin designed to monitor and evaluate these torsional vibrations, employing theoretical modeling, numerical analysis, and experimental methods for successful simulation and validation.
|2025:1084Sven Herold, Hendrik Holzmann, Rainer Nordmann, Fraunhofer Institute Lbf Darmstadt
- Rapport
DIAM – A Matrix Tool for pump vibrations
In this research project a DIAM-Matrix tool together with a flow chart has been developed for the problem of pump vibrations.
|2024-1051RAINER NORMANN TU DARMSTADT