Abstract
Compliant foil gas seal is one of the advanced cylindrical gas seal technologies and can be commonly used in the secondary flow system of an aero-engine. It can enhance the dynamic stability of the aero-engine by meeting the steady requirements of the aero-engine seal system. To evaluate the performance of compliant foil gas seal, the steady performance of the gas seal is firstly analyzed to predict the sealing efficiency and obtain the pressure distribution of the gas seal in the compressible flow field. Then, the effects of the operating parameters on the rotordynamic coefficients are analyzed using the finite differential method. It can be used to predict the operation performance of the aero-engine and prepare for the optimization and test rig of compliant foil gas seal on the T-shaped groove.
Highlights
The deformation generated by heat and vibration in the small seal gaps may lead to seal system instability and failure [1,2]
The numerical evaluation of the compliant foil gas seal is analyzed in this paper, and it is beneficial to predict the performance of the compliant foil gas seal in a complex environment by meeting the steady requirements of the gas seal
Coefficients for gas seals have been used in face gas seal, smoothing, and spiral cylindrical gasgas seals for coefficients for gas seals have been used in face gas seal, smoothing, and spiral cylindrical seals aero-engines, including
Summary
The deformation generated by heat and vibration in the small seal gaps may lead to seal system instability and failure [1,2]. To resolve the challenges and increase the control efficiency of the power system response, the cylindrical structure of the gas seal was designed to avoid seal system failure and improve efficiency with its compliant structure [3,4]. It can be used to reduce leakage in extremely small gaps of the secondary flow system of the areo-engine, including in compressors, turbine, and even other turbomachinery [6,7]. The compliant foil gas seal can increase the seal efficiency and reliability of the aero-engine, and its main role is flexible ability in dynamic deformation [6]. Nordmann and Dietzen [10]
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