Experimental research on coarse water formation in steam condensing flow on a transition through the shock wave

21st Fluid Mechanics Conference

物理学;力学

Dykas, S.^1 ; Majkut, M.^1 ; Strozik, M.^1 ; Smolka, K.^1

Silesian University of Technology, Institute of Power Engineering and Turbomachinery, Konarskiego 18, 44-100 Gliwice, Poland^1

关键词: Condensation phenomenon;    Experimental research;    High back pressure;    Laval nozzles;    Liquid Phase;    Nozzle wall;    Water formation;    Wet steam;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/530/1/012023/pdf
DOI  :  10.1088/1742-6596/530/1/012023

学科分类：力学，机械学

来源: IOP

【 摘 要 】

In this work the condensation phenomena in steam turbine were discussed. The motivation for presented research was an interaction of liquid phase with shock waves existing in the transonic flow. The paper presents the experimental results of the steam condensing transonic flow in Laval nozzles. For the tests the geometries of the half arc nozzles were used. The behaviour of shock waves in the wet steam region was investigated. Due to the high back pressure, in the divergent part of the nozzle the shock wave was induced and interacting with the nozzle walls caused instability in the flow.