Turbulent Taylor-Couette Torque Measurement EuHIT Funded Project

Team

Christoph Egbers
BTU Cottbus-Senftenberg, Cottbus, Germany
Andreas Froitzheim
BTU Cottbus-Senftenberg, Cottbus, Germany
Sebastian Merbold
Brandenburg University of Technology Cottbus-Senftenberg, Cottbus, Germany
Innocent Mutabazi
LOMC, UMR 6294 CNRS-Université du Havre, Le Havre, France
Jorge Peixinho
CNRS & Université Le Havre Normandie, Le Havre, France

Overview

Research Infrastructure
Cottbus Turbulence Experiment Facilities, Germany
Facilities used
Taylor-Couette-System (CoGeoF3)
Project leader
Borja Martínez Arias
Centre National de la Recherche Scientifique (CNRS), Le Havre, France

Abstract

We propose to investigate experimentally turbulent Taylor-Couette flow in the CoGeoF3 of the Cottbus Turbulence Experiment Facilities for the inner rotating cylinder and radius ratio eta=0.5 and eta=0.71. The torque exerted by the fluid on the inner cylinder walls will be measured. Different number of vortices will be imposed. Correlations between the torque-speed relationship and the number of vortices present in the fluid will be studied as a continuation of the work for ”eta=0.909” made by Martínez-Arias et al. [1]. The scaling of the torque with Reynolds number for each number of vortices will be determined. In addition, we will use lased Doppler anemometry to measure the level of fluctuations of the flow, at a constant Reynolds number, when varying the number of vortices. At the same time, we will perform numerical simulations to also study the level of fluctuations. All these studies should lead us to a better understanding of the physical mechanims that underlie the number of vortices present in Taylor-Couette flow.

References

[1] B.Martínez-Arias, J.Peixinho, O.Crumeyrolle and I.Mutabazi, ”Torque measurements in Newtonian and non-Newtoniann fluids in Couette-Taylor flow”. Oral presentation at 18th International Couette-Taylor Workshop, University of Twente, The Netherlands, 2013.