I researched a doctoral thesis in the Department of Mechanical Engineering / College of Engineering at the University of Basra (Radiation Heat Transfer and Optimization of Industrial Combustion Chamber Dimensions) for the student Tahseen Ali Jabbar
The thesis dealt with a study on changing the shape of the surface of a cylindrical combustion chamber, where the surface of this chamber was corrugated as a trapezoid shape. Four different study cases were taken to form the surface of the combustion chamber. The governing equations were solved such as the equations of continuity, momentum and energy
The effect of radiation on temperature, flame stability and formation of nitrogen oxides for diffuse combustion of methane fuel was studied, and a new approach was developed to calculate the ideal dimensions of the trapezoid, which represents the shape of the surface of the combustion chamber, which affects the surface temperature. This new method (CFDSM) depends on changing the sign of the first derivative of a function Target
The results showed that radiation has a clear effect in the combustion chamber on the temperature, as it raises the temperature of solid surfaces and vice versa for gases, and for this reason, radiation reduces the emission of nitrogen oxides. The results also show that the temperature of the solid surface increases with increasing emission. The results also found that both cases The two studies, Case 2 and Case 4, cause the flame stability to be greater than Cases 1 and 3, and the height of the trapezoid in Cases 1 and 3 has a clear effect on the intensity of the radiation falling on the surface.