The Turbomachinery Group is led by Chirag Trivedi. The group conducts fundamental and applied research on hydro turbines, pump-turbine, pumps and other engineering structures relevant to the renewable and sustainable energy.


Waterpower Laboratory

Turbomachinery Group conducts research in the Waterpower Laboratory at Gløshaugen campus of Norwegian University of Science and Technology (NTNU) in Trondheim. The laboratory is equipped with state-of-the-art test rig of Francis turbine, pump-turbine and Pelton turbine.

Turbomachinery Group conducts research using both experimental and numerical methods. Experimental methods include, pressure, strain, vibration, particle image velocimetry (PIV), laser Doppler velocimetry (LDV) measurements.

Waterpower Laboratory

Pressure and strain

Investigate the static and dynamic loading on the turbine blades.


Investigate the turbulent flow using high-fidelity simulation approach.

Particle image velocimetry

Investigate the vortex pattern and inception of vortical flow.


Investigate the turbine blade response during the resonance.

About the laboratory

One of the university’s oldest laboratories, it was built in 1917 on NTNU’s Gløshaugen campus for research and development of hydro turbines. It has played a leading role in the development of global hydropower. The laboratory offers research for PhD, postdoctoral and international researchers. The laboratory and the research group have also access to the largest supercomputer in Norway to carry out high quality simulations.

Contact us

Waterpower Laboratory

Applied research

Scientific research in our group aimed to develop technological solution for flexible operations of turbines, including high ramping rates, multiple start-stop cycles, steep loading-unloading, spin-no-load and spinning reserve.


Fundamental research

We conduct research on boundary layer to address some of the fundamental questions on blade vibrations and the interaction with the dense fluid under several million Reynolds numbers


Vortex shedding

Our group uses experimental and numerical methods to investigate vortex shedding in the turbine.


Stochastic turbulent structure and stall

We investigate the turbulent structure, specifically at the transient operating conditions of the turbine using LES.


Multiphase flow – cavitation and sediment erosion

We largely use numerical methods to investigate the multiphase flow, cavitation in turbine, sediment handling in intake, etc.

Inception of vortex ring

Turbomachinery Group uses large eddy simulation approach to study the inception of strong passage vortex in the runner


One of the critical aspects of the research group is sustainability and provide technological solution for green energy, even minimize the environmental impact of conducting research.

The group conducts research at several levels, including master’s thesis, PhD thesis, postdoctoral research. The research aimed at developing the next generation of hydro turbine technology that can sustain potential impact of energy flexibility. The research group is involved in several research projects combines fundamental and applied research topics. Fundamental research also involves investigations at microscopic level of boundary layer interface of the resonating blade.


blade profile


Vannkraftlaboratoriet, Alfred Getz’ vei 4, 7034 Trondheim

Norwegian University of Science and Technology (NTNU)