Funding for this research was provided by:
Forschungsvereinigung Antriebstechnik (FVA 779)
Technische Universität München
Article History
Received: 26 March 2021
Accepted: 17 June 2021
First Online: 9 July 2021
Conflict of interest
: N. Sagraloff, T. Tobie and K. Stahl declare that they have no competing interests.