Simulation of Internal Pipe Flows in Gasoline Port Fuel Injection System under Steady State Condition

Abstract

Fluid flow models developed for pipe flows in gasoline port fuel injection system with different number of injectors working under steady state condition was simulated in this study using Flow Master Software. Using existing equations, theoretical analysis were computed for the same flow parameters and the results obtained for each parameter for both the simulation and theoretical approach were compared accordingly. The results obtained for theoretical approach and that of simulation had not shown much correlation due to the assumptions and computational errors. The pipe flow was simulated under steady state and the inlet pressure flowing across the circular pipe increased per unit time while fluctuations characterised by sinusoidal pattern were observed on the plot of total pressure at bends against time. The normal pressure while flowing along the pipe duct increased proportionally with the pipe length but suddenly experience a decline and picks up again as it encounters a bend. The mass flow rate of gasoline was observed to increases gradually as the simulation time progressed. For the three simulated outcomes, decrease were observed as the flow approaches bends along the circular pipe. Hence, the use of FLOWMASTER software in Computational Fluid Dynamics (CFDs) can help in predicting flow characteristics in hydraulic computations.