CFD Simulation of Micro Gas Turbine Recuperator

Chakravarthi, AK and Ramamurthy, S and Selvaraj, C (2006) CFD Simulation of Micro Gas Turbine Recuperator. In: Proceedings of National Conference on CFD,Applications in Power and Industry Sector, November 17-18, 2006, BHEL,Hyderabad. (Submitted)

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    Abstract

    To achieve high thermal efficiencies for micro and mini gas turbines a recupertor is mandatory. the present study investigates the flow and heat transfer characteristics of corrugated duct for the primary surface annular recupertrator applications. Commercial CFD code is used to understand the variation of the overall flow structures and heat transfer parameters inside the corrugated duct. The effects of corrugation angles and flow directions with respect to inlet boundary are examined systematically, and the heat transfer and pressure loss characteristics are investigated. In order to arrive at a suitable mesh size, the grid sensitivity test has been carried out with three different grids. Optimum grid was selected based on convergence criteria, computational time and grid independent results. Finally attempts are made to increase the compactness of the recuperator. Corrugation angle 45 degree gives higher effectiveness when compared with 60 degree, 75 degree angles

    Item Type: Conference or Workshop Item (Lecture)
    Subjects: AERONAUTICS > Aeronautics (General)
    AERONAUTICS > Aircraft Propulsion and Power
    Division/Department: Other, Propulsion Division, Other
    Depositing User: Dr S Ramamurthy
    Date Deposited: 12 Aug 2010 15:29
    Last Modified: 12 Aug 2010 15:29
    URI: http://nal-ir.nal.res.in/id/eprint/8949

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