Analysis of Gas Turbine Blade with Number of Holes for Cooling | |
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( Volume 2 Issue 9,September 2016 ) OPEN ACCESS | |
Author(s): | |
Ch. Indira Priyadarsini, T. Aasish Kashyap, K. Akshay Kumar, M. Dinesh Reddy, S.Vamshi Krishna | |
Abstract: | |
The aim of the paper is to evaluate the need in the gas turbine industry for a systematic validated computational methodology for heat transfer problem to give the optimum cooling. Various techniques have been proposed for the cooling of blades and one such technique is to have axial holes along the blade span. Cooling of blades has been a major concern since they are in a high temperature environment. In a high temperature gas turbine, turbine blade cooling designs require key technologies. Computational fluid dynamic (CFD) is used to analyze flow performance due to changing the material properties of like Nickel-Chromium alloy and Titanium-Aluminum Alloy. Three different models with different number of holes (6,8,12) were analyzed in this paper to find out the optimum number of holes for good cooling rate. In computational fluid dynamic (CFD),flow analysis is carried out. Graphs are plotted for velocity, pressure and temperature distribution for existing design. 3D model of the blade is shown. When the numbers of holes are increased in the blade, the temperature distribution falls down. Our calculations were compared adequately well with published experimental data as well as our own fundamental test data. Attention is focused on the accuracy using commercially available numerical methods, computational fluid dynamic (CFD) for fluid flow, temperature distribution for number of holes are analyzed. |
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