Open AccessApplication of numerical modelling for determining the optimal position of the suction slot in the steam turbine vane cascade
Author(s) -
В. Г. Грибин,
А. А. Тищенко,
Роман Алексеев,
I. Yu. Gavrilov,
В. В. Попов,
В. А. Тищенко
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1683/2/022067
Subject(s) - cascade , mechanics , suction , mach number , turbine , steam turbine , position (finance) , materials science , flow (mathematics) , turbine blade , mechanical engineering , physics , engineering , finance , chemical engineering , economics
The numerical investigations of liquid film development in the last stages of steam turbines were performed. This data was used to suggest the position of the suction slot used to evacuate the liquid phase from the turbine flow path. The object of study is a periphery 2D section of vanes cascade. The movement of coarse droplets in the blade passage was simulated. Their collision with the blade surfaces results in the appearance of additional sources of mass and momentum for liquid film. The influence of theoretical Mach number on the features of liquid film formation was studied. The distributions of main characteristics, reflecting the formation of the film, have been obtained. They were used to analyse the liquid phase flow along the surfaces and to point out base recommendations about the location of the suction slot.