Causes and Solution of Aperiodicity of Supersonic Flow Field Downstream of a Profile Cascade

  • Martin Luxa
  • Jaroslav Synac
  • Pavel Safarik
  • David Simurda
Keywords: turbine cascade, exit flow periodicity, transonic flow, porous tailboard, limit load

Abstract

The paper deals with problems of transonic flow field periodicity downstream of a profile cascade with finite number of blades. The origin of phenomena generating this aperiodicity in transonic wind tunnel is described. The solution of this problem by means of adjustable perforated tailboard is documented by results of optical measurements (interferometry, schlieren methods) on a turbine profile cascade consisting of six blades only. The conditions of formation of limit load regime are described.

Author Biographies

Martin Luxa

Institute of Thermomechanics ASCR, v.v.i., Prague, Czech Republic

Jaroslav Synac

R&D dept., Skoda Power, Pilsen, Czech Republic

Pavel Safarik

Czech Technical University in Prague, Prague, Czech Republic

David Simurda

Institute of Thermomechanics ASCR, v.v.i., Prague, Czech Republic

Published
2012-12-31
How to Cite
Luxa, M., Synac, J., Safarik, P., & Simurda, D. (2012). Causes and Solution of Aperiodicity of Supersonic Flow Field Downstream of a Profile Cascade. Communications - Scientific Letters of the University of Zilina, 14(4A), 23-28. Retrieved from http://journals.uniza.sk/index.php/communications/article/view/787
Issue
Vol 14 No 4A (2012)
Section
Articles