Low Leakage Designs for Rotor Teeth and Honeycomb Lands in Labyrinth Seals

Autor:	Douglas Ramerth, Dhinagaran Ramachandran, Hasham H. Chougule
Rok vydání:	2008
Předmět:	Honeycomb structure Engineering business.industry Hexagonal crystal system Low leakage Structural engineering Computational fluid dynamics business Labyrinth seal Flow field Radial clearance Leakage (electronics)
Zdroj:	Volume 4: Heat Transfer, Parts A and B.
DOI:	10.1115/gt2008-51024
Popis:	Design improvements on labyrinth seal teeth and a honeycomb land are examined by three-dimensional CFD numerical modeling of the flow field. The only objective is reduction of the total leakage through the new seal. CFD assumptions and analysis was validated by comparison with leakage data from labyrinth seal experiments conducted by Stocker [1]. The baseline chosen for comparison of sealing effectiveness is a conventional low clearance straight-through labyrinth seal with four teeth and a honeycomb land of symmetrical hexagonal cells. The proposed new seal has a staggered honeycomb land and straight teeth with an inclined notch. CFD predicts ∼17% reduction in seal leakage at a radial clearance of 0.005 inch (0.122mm) due to higher wall friction and flow turbulence.Copyright © 2008 by ASME
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f11f21652e48790be6992db296704aca https://doi.org/10.1115/gt2008-51024 Zobrazit plný text záznamu