Kaji Teoritis Aliran Swirling Melalui Annulus Pada Saluran Lurus Menggunakan Metode Volume Hingga

Abstract

Nowdays technology development to increase more perfect combustion very high, because of that we need metodology principal with high efficiency. With the result that we need to make an innovation to develop efficiency in this case at system of combustion channel to the burner so that in obtaining maximal result and can improve the characteristic from a combustion process. In this simulation swirling flow conducted by applying ratio of swirl velocity (α) at shares of velocity inlet that is equal to α = 0; 0,4; 0,7; 1 and 1,2. The fluid flow through annulus in diametrical channel studied by CFD. At this simulation by using fluid of mixture n-Octane (C8H18) and air with the velocity enter to 25,5 m/s The aim of the analysis is to analyze the influence/effect of swirling flow that applied at inlet velocity to model of flow and intensity turbulence in its context for the improvement of combustion characteristic. As for segment perceived in area of jet flow at x = 0,11; 0,25; 0,5; 0,75; 1 and 1,5. Detailed result on the fluid flow velocity profile and intensity turbulent that happened at jet flow are presented. Applying of ratio swirl velocity (α) at velocity inlet can improve the average of magnitude velocity of mixture n octane-air. Where from simulation result obtained by the existence relation of applying of ever greater ratio swirl velocity (α) can improve the average of magnitude velocity in each segment perceived. Quality of fuel combustion can be improved by applying swirl flow at velocity inlet capable to improve the intensity turbulence. Make-Up of intensity turbulence that happened will improve the efficiency of fuel mixing with the air, improving combustion intensity and stabilize the combustion flame by applying Internal Recirculation Zone(IRZ)