Researcher in HydroFlex: Increasing the Value of Hydropower through Increased Flexibility

Trondheim, Norway
31 Jan 2018
End of advertisement period
02 Mar 2018
IV- 71/18
Contract Type
Full Time

Faculty of Engineering 
Department of Energy and Process Engineering 


A three-year position as a researcher is available at the Department of Energy and Process Engineering, NTNU. The research will be conducted as a part of the HydroFlex-project which is a Research and Innovation action in Horizon2020. The research will be conducted in collaboration with HydroFlex-partners and the Norwegian Centre for Hydropower Technology (HydroCen). HydroFlex has 16 partners spread over 5 countries in Europe. The researcher will be responsible for the work package which has the objective to develop a variable speed Francis turbine that accommodates high ramping rates and 30 start-stops per day without significantly affecting the operating lifetime and efficiency.

A fundamental change for Francis turbine has been introduced by the variable speed operation through the converter. In addition, this turbine need to handle a lot more start stops and power ramping through its lifetime. Such operation will require the turbine to operate in unfavourable condition leading to high fatigue loads. In addition, the variable speed operation give large variation of the flow induced pressure fluctuation that results in a high risk for resonance in the turbine. To ensure that a Francis turbine can operate like this requires innovative actions.

The HydroFlex turbine design will be based on new design tools that ensure reliable operation. The Francis turbine will consist of the same parts as before, but the design process will have be more complex and CPU-demanding. A basic requirement of the development of new turbine technology is to understand the relation between the energy system parameters, number of start-stops, latency and ramping rate, and the design constraints expressed as mechanical fatigue loads. To improve the reliability and availability of Francis turbines, validated computational and experimental tools addressing the new operating conditions needs to be developed.


  • Applicants must hold a PhD (or equivalent) degree in engineering science or physics, including relevant courses in fluid mechanics above the introductory level. 
  • The applicant must have at-least three years of research experience after PhD as well as well-demonstrated record of research via publications in high impact journals. 
  • The candidate should have knowledge of variable speed turbine operation and measurements. 
  • The candidate should also be familiar numerical analysis of turbomachinery, hydro turbine design and model testing of Francis turbines. 
  • Excellent English skills, spoken and written, are required. 
  • In addition, some knowledge of a Scandinavian language is preferred. 
  • The position requires a high level of personal responsibility and initiative.

Excellent English skills, spoken and written, are required. Applicants from non-English-speaking countries outside Europe must document English skills by an approved test. Approved tests are TOEFL, IELTS, Cambridge Certificate in Advanced English (CAE) or Cambridge Certificate of Proficiency in English (CPE).


Researchers are remunerated in code 1109, and are normally remunerated at gross from NOK 486 100 – 643 900 per annum before tax. 

There will be a 2% deduction to the Norwegian Public Service Pension Fund from gross wage. The appointment of the researcher will be made according to Norwegian guidelines for universities and university colleges and to the general regulations regarding university employees.

For further information, please contact Professor Ole Gunnar Dahlhaug   

The researcher’s office will be located in the Waterpower laboratory at NTNU Trondheim.

The engagement is to be made in accordance with the regulations in force concerning State Employees and Civil Servants. The positions adhere to the Norwegian Government's policy of balanced ethnicity, age and gender. Persons with immigrant background are encouraged to apply. NTNU´s objective is to increase the number of females in scientific positions. Female applicants are therefore encouraged to apply.

The application

The application must contain information of educational background and work experience. Certified copies of academic diplomas and certificates, copies of transcripts and two reference letters should be enclosed. Applications with CV, grade transcripts and other enclosures should be submitted via this webpage at  

Mark the application with IV-71/18.

Application deadline is 15th February 2018

According to the new Freedom of Information Act, information concerning the applicant may be made public even if the applicant has requested not to be included in the list of applicants. 


  • Deadline Thursday, February 15, 2018
  • Employer NTNU - Norwegian University of Science and Technology
  • Website
  • Municipality Trondheim
  • Place of service Department of energy and process engineering
  • Jobbnorge ID 147469
  • Internal ID 2018/3777
  • Scope Fulltime
  • Duration Temporary


  • Applications on this job are registered in an electronic form on
  • You must complete: Standard CV
  • Please refer to where you first saw this job advertised!