Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31903
Study of Unsteady Swirling Flow in a Hydrodynamic Vortex Chamber

Authors: Sergey I. Shtork, Aleksey P. Vinokurov, Sergey V. Alekseenko


The paper reports on the results of experimental and numerical study of nonstationary swirling flow in an isothermal model of vortex burner. It has been identified that main source of the instability is related to a precessing vortex core (PVC) phenomenon. The PVC induced flow pulsation characteristics such as precession frequency and its variation as a function of flowrate and swirl number have been explored making use of acoustic probes. Additionally pressure transducers were used to measure the pressure drops on the working chamber and across the vortex flow. The experiments have been included also the mean velocity measurements making use of a laser-Doppler anemometry. The features of instantaneous flowfield generated by the PVC were analyzed employing a commercial CFD code (Star-CCM+) based on Detached Eddy Simulation (DES) approach. Validity of the numerical code has been checked by comparison calculated flowfield data with the obtained experimental results. It has been confirmed particularly that the CFD code applied correctly reproduces the flow features.

Keywords: Acoustic probes, detached eddy simulation (DES), laser-Doppler anemometry (LDA), precessing vortex core (PVC).

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 2134


[1] K. Gupta, D. G. Lilley, N. Syred, Swirl Flows. Abacus Press, 1984.
[2] E. C. Fernandes, M. V. Heitor, S. I. Shtork, "An analysis of unsteady highly turbulent swirling flow in a model vortex combustor," Experiments in Fluids, vol. 40, no. 2, pp. 177-187, Feb. 2006.
[3] N. Syred, "A review of oscillation mechanisms and the role of the precessing vortex core (PVC) in swirl combustion systems," Progress in Energy and Combustion. Science, vol. 32(2), pp. 93-161, Apr. 2006.
[4] S. V. Alekseenko, P. A. Kuibin, V. L. Okulov, Theory of Concentrated Vortices: An Introduction. Springer, 2007.
[5] S. I. Shtork, C. E. Cala, E. C. Fernandes, "Experimental characterization of rotating flow field in a model vortex burner," Experimental Thermal and Fluid Science, vol. 31, pp. 779-788, July 2007.
[6] F. Martinelli, F. Cozzi, A. Coghe, "Phase-locked analysis of velocity fluctuation in a turbulent free swirling jet after vortex breakdown," Experiments in Fluids, vol. 53, pp. 437-449, Aug. 2012.
[7] P. R. Spalart, "Detached Eddy Simulation," Annual Review of Fluid Mechanics, vol. 41, pp. 181-202, Jan. 2009.
[8] J. Paik, F. Sotiropoulos, "Numerical simulation of strongly swirling turbulent flows through an abrupt expansion," International Journal of Heat and Fluid Flow, vol. 31, pp. 390-400, June 2010.
[9] J. Jeong, F. Hussain, "On the identification of a vortex," Journal of Fluid Mechanics, vol. 285, pp. 69-94, Feb. 1995.