TY - GEN
T1 - Transient simulation for the gas ingestion through turbine’s rim seal
AU - Hu, Jianping
AU - Liu, Zhenxia
AU - Zhu, Pengfei
N1 - Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2019.
PY - 2019
Y1 - 2019
N2 - As the turbine front temperature of the modern aero-engine gets higher and higher, the problem of gas ingestion and the related rim sealing is becoming more and more serious. In this paper, the unsteady numerical simulation of the rim seal model with cavity is carried out, based on the gas ingestion experiment rig of Bath University. Firstly, the CFD results is compared with the experiments to valid the accuracy. The comparison for the pressure distribution shows that the simulation agrees well with the experiments. But the results for the sealing efficiency have some relatively errors. Secondly, the change process for some parameters about the ingestion is discussed. The simulation shows the pressure distribution of main flow is the decisive factor, and the interaction between the blades and the vanes affects the pressure distribution. Thirdly, the effect of the interaction between blade and vanes is provided a close analysis. Interestingly, the periodicity of the sealing efficiency is not consistent with that of the rotating blades. Also, the effect of the axial spacing is obtained through reducing the spacing by twenty percent. The decrease of axial spacing between vane and blade will cause the increase of the peak value of the pressure in the high pressure region.
AB - As the turbine front temperature of the modern aero-engine gets higher and higher, the problem of gas ingestion and the related rim sealing is becoming more and more serious. In this paper, the unsteady numerical simulation of the rim seal model with cavity is carried out, based on the gas ingestion experiment rig of Bath University. Firstly, the CFD results is compared with the experiments to valid the accuracy. The comparison for the pressure distribution shows that the simulation agrees well with the experiments. But the results for the sealing efficiency have some relatively errors. Secondly, the change process for some parameters about the ingestion is discussed. The simulation shows the pressure distribution of main flow is the decisive factor, and the interaction between the blades and the vanes affects the pressure distribution. Thirdly, the effect of the interaction between blade and vanes is provided a close analysis. Interestingly, the periodicity of the sealing efficiency is not consistent with that of the rotating blades. Also, the effect of the axial spacing is obtained through reducing the spacing by twenty percent. The decrease of axial spacing between vane and blade will cause the increase of the peak value of the pressure in the high pressure region.
KW - Gas ingestion
KW - Interaction between blades and vanes
KW - Rim seal
KW - Unsteady simulation
UR - http://www.scopus.com/inward/record.url?scp=85070775295&partnerID=8YFLogxK
U2 - 10.1007/978-981-13-3305-7_152
DO - 10.1007/978-981-13-3305-7_152
M3 - 会议稿件
AN - SCOPUS:85070775295
SN - 9789811333040
T3 - Lecture Notes in Electrical Engineering
SP - 1880
EP - 1887
BT - The Proceedings of the Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
A2 - Zhang, Xinguo
PB - Springer Verlag
T2 - Asia-Pacific International Symposium on Aerospace Technology, APISAT 2018
Y2 - 16 October 2018 through 18 October 2018
ER -