Katedra energetických strojů a zařízení / Department of Power System Engineering


Recent Submissions

Duda, Daniel , Abrhám, Vladimír , Uruba, Václav , Yanovych, Vitalii
Turbulent jet stability increased by ribs inside the nozzle – Stereo PIV measurement one diameter past the nozzle

We observe that decreasing the inner nozzle surface by adding longitudinal ribs increases the jet stability in terms of the amount of turbulent kinetic energy in the near shear layer. We try to explain our observation as a stabilization effect of secondary flow vortices emergi...

Yanovych, Vitalii , Duda, Daniel , Uruba, Václav , Kosiak, Pavlo
The structure of turbulent flow behind the NACA 0012 airfoil at high angles of attack and low Reynolds number

This paper shows the results of a study of the turbulent structure behind the NACA 0012 airfoil. During the experiment, the flow velocity was 20 m·s−1. That corresponds the Reynolds number 1.3·105. The point behind the trailing edge was chosen for experimental studies. Measurements...

Richter, Lukáš , Rendlová, Zdeňka , Plánička, Stanislav , Seeger, Jan , Taschek, Marco , Volf, Michal , Pelikán, Martin , Linhart, Vít
Experimental and numerical analysis of an oil-flooded air screw expander

This article describes the results of a project whose task is to research and develop a screw expander through the inversion of a screw compressor. The article summarizes aspects of the construction of an experimental device that works with an oil-flooded air screw expander. T...

Yanovych, Vitalii , Duda, Daniel
Using ARAMIS system for measurement of structural stability of running wind tunnel

Wind tunnels are popularly used to study various aerodynamic phenomena. Their design significantly influences the quality of the created airflow. During the flow generation, the construction parts of the wind tunnel to get deformed due to pressure variations. This phenomenon significantly co...

Duda, Daniel , Yanovych, Vitalii , Uruba, Václav , Němec, Martin , Žitek, Pavel
Vortices inside a single-stage axial air turbine captured by Particle Image Velocimetry

Particle Image Velocimetry (PIV) is an experimental method of fluid research resulting into a spatially resolved two-dimensional velocity field. We measured the velocity inside a single-stage axial test turbine at the Czech Aerospace Research Centre. We studied the axial × tangential plane&#...