Experimental Study of Pressure Drop after the Circle Grids Fractal Orifice

Flow rate measurements are among the most important operations in modern industries dealing with increasingly expensive fluids such as petroleum, biodiesel and natural gas. The accuracy of flow meters depends mainly on their position in a pipe network and their operating conditions. Another important in designing piping system is a pressure drop across the flow measurement devices. Here, we investigate the pressure drop after the circle grids fractal orifices using a digital differential pressure manometer at different stations downstream a turbulent flow pipe then a direct comparison has been made with the pressure drop measured from regular orifices with the same flow area. Our results showed that the circle grid fractal orifices have a significant effect on pressure drop downstream the flow which is to be lower than that from ordinary orifices of the same flow area. This result could be important from point of view of losses consideration with the same flow control area. The experimental results using the circle grid fractal orifices show that these types of orifices can sense the pressure drop across them accurately with minimum losses than the regular ones.