Airflow in Ducts Research Paper - Lab Report Example

Experiment 2 There is a slight fall in pressure in the approach section and the static pressure is at a minimum about one pipe diameter before the orifice plate. The pressure of the fluid then rises near the face of the orifice. There is then a sudden fall of pressure as the fluid passes through the orifice, but the minimum pressure is not attained until the vena contracta is reached. Beyond the vena contracta, there is a rapid recovery in the static pressure. Owing to friction and dissipation of energy in turbulence, the maximum downstream pressure is always lesser than the upstream pressure.

The pressure loss so caused depends upon the differential pressure and increases as the orifice ratio decreases for a given rate of flow. Contents Introduction………………………………………………………………………………………..4 Literature review……………………………………………………………………….………….4 Theory……………………………………………………………………………………………..6 Methodology…………………………………………………………………………………….

7 Results…………………………………………………………………………………….……….9 Discussion of Results…………………………………………………………………………….11 Conclusions………………………………………………………………………………………13 References………………………………………………………………………………………..15 Introduction Experiment 1 The main intention of this experiment is to explore the relationship between fluids and the media through which they travel by exploring the events that occur in the movement of a fluid from one point to another and the characteristics of the fluid itself.

These may include may include pressure, momentum, viscosity, turbulence, velocity of the fluid and friction. It also considers the impact of foreign bodies and flow equipment along the path of the fluid This experiment will allow students to learn the method of measuring air flow velocity using Pitot tube. The student will understand the working principle of Pitot tube as well as the importance of Bernoulli equation in deriving and calculating the velocity by exploring the developing boundary layer in the entry length of a pipe.

Experiment 2 The main objective of this was to determine the vital discharge coefficient for an orifice plate meter installed within an air flow pipe and using the static pressure tapping’s provided, to investigate the pressure distribution along the pipe downstream of the orifice plate. Literature review Essentially fluid dynamics in physics is considered as a sub-discipline of fluid mechanics, and deals with the relations between velocities and accelerations and forces exerted by or upon fluids in motion.

This field encompasses aerodynamics, (the study of air and other gases in motion) and hydrodynamics (the study of liquids in motion). Fluids are either liquids or gases A liquid is a state of matter in which the molecules are relatively but still are on average close enough together to interact continuously with nearest neighbors so as to maintain a relatively fixed volume. In contrast, a gas exists as a state of matte