Modeling Study Of A Gas Turbine Burner Cooling Ring Efficiency In A Model Combuster Exit Duct

Suhaila, Mat Said (2010) Modeling Study Of A Gas Turbine Burner Cooling Ring Efficiency In A Model Combuster Exit Duct. Project Report. UTeM, Melaka, Malaysia. (Submitted)

	PDF (24 Pages) Modeling_Study_Of_A_Gas_Turbine_Burner_Cooling_Ring_Efficiency_In_A_Model_Combustor_Exit_Duct_-_24_pages.pdf - Submitted Version Download (604kB)
	PDF (Full Text) Modeling_Study_Of_A_Gas_Turbine_Burner_Cooling_Ring_Efficiency_In_A_Model_Combustor_Exit_Duct.pdf - Submitted Version Restricted to Registered users only Download (7MB)

Abstract

The main purpose of this study is to increase the efficiency of gas turbine burner cooling ring in a model combustor exit duct. The Computational Fluid Dynamics (CFD) package of FLUENT will use to simulate 2D cooling ring model. The modeling of burner cooling ring is taken under turbulence models of two equation model, which are turbulent kinetic energy, k and the energy dissipation, ε or known as standard k-epsilon model. The cooling ring effectiveness is dependent upon the approach flow turbulence; the temperature; velocity distribution; and the blade and cooling ring geometry. The 2D geometry of a gas turbine cooling ring is built up with suitable grid to determine the heat coefficient and its effectiveness. There are 3 cases during this study; the cooling ring efficiency is investigated at fixed velocity of 10 m/s and the turbulence intensity, α between 5% to 25%, and the other one is at fixed turbulence intensity, α of 10% and varies the value of velocity between 5 m/s to 25 m/s. The third case is by varies the size of cool air inlet for 10 mm to 40 mm. Both temperature, T at cool air inlet and hot air inlet is constant at 293 K and 1000 K respectively. In this study the wall is assumed to be solid wall with adiabatic wall temperature and non-slip boundary condition. Both pressure inlet and outlet are same. After simulate using CFD, the graph of cooling ring performance will be obtained. As the result, the most cooling effectiveness will increase with increasing velocity, decreasing turbulence intensity, with large size of coolant air inlet.

Actions (login required)

View Item