Performance Evaluation of Labyrinth Seals

Pai, Raghuvir B and Shenoy, Satish B and Kini, Vijaya M (2016) Performance Evaluation of Labyrinth Seals. In: EDF Pprime Workshop 'Wear and Life Time of Seals', 06/10/2016, Universite De Poitiers,Poitiers, France.

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Labyrinth seals are widely used in various turbomachinery applications, which help in minimizing the internal leakages. During the passage of lubricant oil into the rotor shaft labyrinth seals, dynamic forces will be generated which will cause unstable vibration of the rotating shaft. Precise values of rotordynamic forces are necessary to predict the stabilitybehavior of rotorbearing system. This research was focussed on determining the rotordynamic forces and dynamic coefficients generated in gas labyrinth seals by performing CFD analysis. The modelling of labyrinth seal geometry is carried out in GAMBIT software. From the CFD analysis of the model, the dynamic characteristics of labyrinth seal will be evaluated for different speeds. The initial thrust will be on a rotor shaft labyrinth seal assuming an inlet swirl velocity of zero. The results of CFD analysis are compiled for different operating conditions.The obtained values are later compared with the results of bulk flow programs, and haveshown reasonable agreement. The data obtained from the analysis can be used to include the dynamical aspects in the design and implementation of labyrinth seals.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Labyrinth seals, CFD, Rotordynamic forces, Instability, Stiffness.
Subjects: Engineering > MIT Manipal > Aeronautical and Automobile
Engineering > MIT Manipal > Mechanical and Manufacturing
Depositing User: MIT Library
Date Deposited: 07 Jan 2017 13:49
Last Modified: 07 Jan 2017 13:49

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