Unsteady Numerical Simulation of Hot Streak/Blades Interaction and Film Cooling |
| |
Authors: | Weilin Yi Lucheng Ji Yunhan Xiao |
| |
Affiliation: | Research Center for Energy and Power, Chinese Academy of Sciences, Beijing, China |
| |
Abstract: | Deeply research on management and application of hot streak is an important way to breakthrough technique obstacle of aero
engine hot components. Numerical method is a useful instrument to investigate the correlative problems. Firstly the paper
developed independently three dimensional unsteady parallel computational code-MpiTurbo based on Fortran 90 and MPI at Linux
operating system. Then unsteady numerical simulation was carried out to investigate impacts of the factors, which included
circumferential locations of hot streak and clocking positions of blade rows, on the thermal environment of a 1+1 counter-rotating
turbine. The results clearly indicated that clocking positions of hot streak/blade row and blade row/blade row had great influence
on the time-averaged temperature distribution of the third blade row. Therefore, it can be effective for improving thermal
environment of turbine to optimize blade parameters and clocking positions. Lastly film cooling layout was designed by the
repetitious steady simulation based on source term method. And the flow structure detail was given by the unsteady simulation. |
| |
Keywords: | hot streak turbine parallel computation film cooling |
本文献已被 CNKI 维普 SpringerLink 等数据库收录! |