GERAN FRGS Vot 0724 UNIVERSITJ: TUN HUSSEIN ONN MALAYSIA

Transcription

1 Hydrodynamic and Thermal Characteristics Study of Cooling Structure (IIC) for Eco-Gas Turbine Engine Blade PROJECT LEADER Dr. Hamidon Bin Salleh PROJECT MEMBER Prof. Dr. Vij ay R. Ragavan Prof. Dr. Funazaki Kenichi AP Dr. Ahmad Jais Bin Alimin Suzairin Bin Md Seri Mohd Faizal Bin Mohideen Batcha Siti Rohila Binti Atan GERAN FRGS Vot 0724 UNIVERSITJ: TUN HUSSEIN ONN MALAYSIA

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4 ABSTRACT Higher inlet temperature of gas turbine increases the thermal performance, requiring the operating temperature to be higher that the allowable blade material temperature. Study on advance cooling technique is required to fulfil the increasing demand on lugher performance turbine system. The present study deals with numerical simulation on an advanced Integrated Impingement Cooling (IIC) system. The IIC integrates the conventional film cooling (external cooling) with internal cooling, which comprises of cool jet impingement on inner blade wall (the target plate) and structural pins that act as fins. Overall cooling performance of four (4) newly proposed IIC configurations including two (2) configurations by Funazaki and Hamidon (2008) have been investigated through unsteady three-dimensional numerical simulation of RANS with k-e turbulence model via commercial CFD package, FLUENT. The numerical results show good agreement with experimental data of Funazaki and Harnidon (2008). It is concluded that the inner pin configuration does not affect the adiabatic cooling performance at the outer wall. However the pin configuration does affect the internal cooling performance, consequently the overall cooling performance. It is observed that STAGS offers the best overall performance of the six configurations studied.

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