Effects of Fluid Flow Characteristics and Heat Transfer of Integrated Impingement Cooling Structure for Micro Gas Turbine

Hamidon Salleh; Amir Khalid; Syabillah Sulaiman; Bukhari Manshoor; Izzuddin Zaman; Shahrin Hisham Amirnordin; Amirul Asyraf; Wahid Razzaly

doi:10.37934/cfdl.12.9.104115

Authors

Hamidon Salleh Centre for Energy and Industrial Environment Studies (CEIES), Fakulti Kejuruteraan Mekanikal, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia
Amir Khalid Automotive and Combustion Synergies Technology Group, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, 86400 Pagoh, Johor, Malaysia
Syabillah Sulaiman Automotive and Combustion Synergies Technology Group, Faculty of Engineering Technology, Universiti Tun Hussein Onn Malaysia, 86400 Pagoh, Johor, Malaysia
Bukhari Manshoor Centre for Energy and Industrial Environment Studies (CEIES), Fakulti Kejuruteraan Mekanikal, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia
Izzuddin Zaman Centre for Energy and Industrial Environment Studies (CEIES), Fakulti Kejuruteraan Mekanikal, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia
Shahrin Hisham Amirnordin Centre for Energy and Industrial Environment Studies (CEIES), Fakulti Kejuruteraan Mekanikal, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia
Amirul Asyraf Centre for Energy and Industrial Environment Studies (CEIES), Fakulti Kejuruteraan Mekanikal, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia
Wahid Razzaly Universiti Tun Hussein Onn Malaysia, Parit Raja, Batu Pahat, 86400 Johor, Malaysia

DOI:

https://doi.org/10.37934/cfdl.12.9.104115

Keywords:

Heat transfer coefficient, gas turbine blade, Computational Fluid Dynamics (CFD), impingement cooling

Abstract

Gas turbine is one of the important sources of energy which combust a combination of fuel and compress air to produce a mechanical work that will be converted into electrical energy. Efficiency of gas turbine can be increased by raising the Turbine Inlet Temperature (TIT). The problem is current trend of TIT already exceed the allowable melting point temperature of metal blade material. The current turbine blade can withstand its high temperature by adding jet impingement cooling structure into turbine blade. The purpose of this research is to investigate the effect of combination two different stand-off distance ratio, Y/D towards the heat transfer coefficient of the target plate by using Ansys FLUENT Computational Fluid Dynamics (CFD). Combination of stand-off distance ratio, Y/D = 1.5&3.0 gave 2^nd highest heat transfer coefficient on the target plate next to the original stand-off distance ratio, Y/D = 1.5 with only a slightly different in value. By combining two different stand-off distance ratio, Y/D in a set of arrays, it can affect the heat transfer coefficient on the target plate. It seems that the combination of stand-off distance may improve the performance of heat transfer coefficient of turbine blade that have relatively lower heat transfer coefficient and may be detrimental to the performance of heat transfer coefficient that have a relatively high heat transfer coefficient.