Phd Position in Flow-induced-vibrations in Heat Exchanger Finned Tube Bundles

Gløshaugen, Norway
13 Feb 2019
End of advertisement period
05 Mar 2019
Contract Type
Full Time

About the position

We have a vacancy for a PhD Candidate at Department of Structural Engineering

Sintef Energy and the Norwegian University of Science and Technology (NTNU) are collaborating with a number of industry partners to validate methodology for design of more compact, lightweight and robust steam-based bottoming cycles that will promote their implementation across all areas and stages of offshore oil and gas production. This will increase energy efficiency and reduce fuel consumption and CO2 emissions by up to 30%.

Reducing the weight of the fin tube bundles in the heat exchanger might make the bundles more sensitive with respect to flow-induced vibrations. The vibrations are caused by the interaction between the exhaust gas and the tube bundle. The individual tubes may vibrate due to the turbulence in the incoming flow, due to vortex shedding or due to fluid elastic instability phenomena where all the pipes interact and creates a synchronous motion of the entire tube bundle.

The position reports to supervisor Professor Ole Øiseth.

Job description

  • Review of existing relevant literature on flow induced vibration of finned tube bundles. 
  • Design of an experimental setup for wind tunnel testing to study vortex induced vibration and fluid elastic instability.
  • Wind tunnel testing to study the performance of the tube bundle and to study the influence of turbulence.
  • Use of photogrammetry to measure vibrations of the tubes in the wind tunnel experiments.
  • Processing the measurement by applying advanced signal processing and system identification.
  • Preparation of papers for academic journals.

Qualification requirements

The PhD-position's main objective is to qualify for work in research positions. The qualification requirement is completion of a master’s degree or second degree (equivalent to 120 credits) with a strong academic background in Structural Engineering or equivalent education with a grade of B or better in terms of NTNU’s grading scale. Applicants with no letter grades from previous studies must have an equally good academic foundation. Applicants who are unable to meet these criteria may be considered only if they can document that they are particularly suitable candidates for education leading to a PhD degree.

The appointment is to be made in accordance with the regulations in force concerning State Employees and Civil Servants and national guidelines for appointment as PhD, postdoctor and research assistant

Other qualifications

  • suitable background (master’s degree or equivalent) would be within structural engineering, wind engineering, structural dynamics, aerodynamics or hydrodynamics.
  • experience in experimental research and to develop advanced numerical models within the scope of the project
  • good written and oral English and Norwegian language skills

Personal characteristics

  • motivated and ambitious
  • proficiency to carry out goal-oriented work
  • good cooperation abilities
  • excellent communication skills in scientific writing and oral presentation are needed.

In the evaluation of which candidate is best qualified, emphasis will be placed on education, experience and personal suitability, as well as motivation, in terms of the qualification requirements specified in the advertisement

We offer

Salary and conditions

PhD candidates are remunerated in code 1017, and are normally remunerated at gross from NOK 449 400 before tax per year. From the salary, 2 % is deducted as a contribution to the Norwegian Public Service Pension Fund.

The period of employment is 3 years. Appointment to a PhD position requires admission to the PhD programme in Engineering. 

As a PhD candidate, you undertake to participate in an organized PhD programme during the employment period. A condition of appointment is that you are in fact qualified for admission to the PhD programme within three months.

Appointment takes place on the terms that apply to State employees at any time, and after the appointment you must assume that there may be changes in the area of work.

General information

Working at NTNU

A good work environment is characterized by diversity. We encourage qualified candidates to apply, regardless of their gender, functional capacity or cultural background. Under the Freedom of Information Act (offentleglova), information about the applicant may be made public even if the applicant has requested not to have their name entered on the list of applicants.

Questions about the position can be directed to Professor Ole Øiseth, phone number 73591493, e-mail

About the application:

Publications and other academic works that the applicant would like to be considered in the evaluation must accompany the application. Joint works will be considered. If it is difficult to identify the individual applicant's contribution to joint works, the applicant must include a brief description of his or her contribution.

Please submit your application electronically via with your CV, diplomas and certificates. Applicants invited for interview must include certified copies of transcripts and reference letters.

Please refer to the application number IV-70/19 when applying.

Application deadline: 05.03.19

NTNU - knowledge for a better world

The Norwegian University of Science and Technology (NTNU) creates knowledge for a better world and solutions that can change everyday life.

Department of Structural Engineering

We teach mechanical engineering, engineering and ICT, and civil and environmental engineering. The Department conducts internationally leading research and participates in several large national research projects. The Department of Structural Engineering is one of eight departments in the Faculty of Engineering.

Deadline 05.03.19
Employer NTNU - Norwegian University of Science and Technology
Municipality Trondheim
Scope Fulltime
Duration Temporary
Place of service Gløshaugen