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Numerical investigation of profile losses in the nozzle vane cascades at different relative pitches

Slitenko A., Gurinov A.

Prace Naukowe Politechniki Warszawskiej. Konferencje

2003

z. 23

337--343

Investigation of the flow and aerodynamic losses in the turbine blade cascade with profile N4U1 is carried out. There was shown that change of relative pitch in the blade cascade sufficiently influences on distribution of Mach number in the blade channel and on local velocities along blade profile. The relative pitch also influences on flow parameter distribution after blade cascade and on profile loss coefficient. For studied turbine cascades the optimal value of the relative pitch is determined. At this pitch the minimum profile losses exist in the blade cascade.

Improvement of gas turbine unit decrease of cooling air expense

Slitenko A., Rassohin E.

Prace Naukowe Politechniki Warszawskiej. Konferencje

2003

z. 23

345--351

The analysis of influence of cooling air expense on gas turbine unit efficiency is executed. The method and computer program for calculation of gas characteristics in the turbine stages are created. This method takes into account the issue of cooling air into turbine flow path. Three basic ways of cooling air decrease are studied. The calculation research of aerodynamic losses in the blade cascades, efficiency and power of gas turbine unit (GTU) is carried out for each of these ways.

Experimental investigation of three- dimensional flow characteristics in turbine blade cascade

Slitenko A.

Prace Naukowe Politechniki Warszawskiej. Mechanika

1999

z. 181

242-249

Eksperimental investigation of the flow characteristics in three-dimensional boundary layers in the large scale turbine blade cascade was carried out. The visualization of current was fulfilled for preliminary analysis of the flow structure on the endwall of blade channel. Then the distribution of velocity components and flow angles in three-dimensional boundary layers was measured in detail. On basis of the investigation results the generalized equations for calculation of boundary layer characteristics were created.