Abstract
Research on Effects of Incidence to Turbine Guide Cascade Aerodynamic Performance
Highlights
The steam turbine is a rotatory power machinery that can convert the energy of the steam into mechanical work
When steam turbine set runs, the changes of incidence angle could cause the change of the flow loss in the cascade passages
The incidence angle affected the distribution of static surface pressure less within most of the scope of pressure surface and suction surface than other location
Summary
The steam turbine is a rotatory power machinery that can convert the energy of the steam into mechanical work. Because of the less amount of work in the case of negative incidence angle, transverse pressure gradient was not large, and the secondary flow loss decreased. The results of numerical situation showed that the −20° incidence angle could weaken pressure loss within a narrow range, and the 20° incidence angle increases pressure loss In this simulation work, the flow media is a single-phase, isothermal, and compressible flow of gas inside the steam turbine passage. 7-9 show the static pressure coefficient distribution curves in the profile under different incidence angles, and it chose three distribution curves of static pressure coefficient which are blade root (10 percent of relatively high location), central blade (50 percent of relatively high location) and blade tip (90 percent of relatively high location) It was shown that when the incidence angle was negative, the flowing loss was the smallest, the 0° incidence angle was the middle, and the positive incidence angle was the biggest
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
