hydrodynamic and thermal characteristics for eco …eprints.uthm.edu.my/6895/1/frgs_0724.pdf ·...

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

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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