All experiments in the fluid mechanics laboratory require a formal report. Flow measurement pitot static tube basics duration. The pitot tube is used to measure the difference between stagnation pressure and static pressure at a point in the fluid. This experiment will demonstrate how air flow speed is measured using a pitotstatic tube. The pitotstatic tube is a traditional device for local pointwise measurement of airspeed. Instead of separate pitot and static ports, a pitotstatic tube also called a prandtl tube may be employed. A pitot tube, also known as pitot probe, is a flow measurement device used to measure fluid. The purpose of this experiment is to study and calibrate a pitot static tube. The purposes of this laboratory are to 1 help students become familiar with wind tunnel operation, and 2 measure air flow velocity in the tunnels working section by three devices. This manual deals with experiments of fluid mechanics science, which studying in the. To measure the flow velocity by use of a pitot static tube and hence find the discharge coefficient background. This design of pitot static tube was completed in my 6 months industrial training. Fluid velocity measurement using a pitot tube pitot. Subject fluid mechanics topic module 4 pitot tube lecture 30 faculty venugopal sharma gate academy plus is an effort to initiate free online digital resources for the first time in.
Pdf design of pitot static tube for measuring the velocity of rail. It measures the local velocity of flow at a particular point within a pipe rather than the average flow velocity as measured by other types of flowmeter. This project was appreciated by scientists of drdo. Since the static pressure, under this situation, is equal to the hydrostatic pressure due to its depth below the free surface, the difference in level. Pitot tubes also called pitot static tubes are used to measure fluid velocity at a point in a fluid. A pitotstatic tube is widely used for measuring unknown speeds in air flow, for example, it is used to measure airplane airspeed. The pitot static tube is mainly used for making temporary measurements of flow, although it is also used in some instances for permanent flow monitoring. Fluid mechanics module 4 pitot tube lecture 30 youtube. Both manual as well as electronic pressure sensing is available on this. In pitot static tubes, there is a large port in the direction of the flow that measures the total pressure, termed the pitot head, and multiple smaller static pressure ports perpendicular to the flow.
I have successfully designed the pitot static tube for rail track rocket sled. Proof of bernoullis theorem and determination of the exact section in the venturis tube are presented in experiment no. Doc experiment 1 fluid flow measurements lab report. Pitot tube is widely used for fluid velocity and flow rate measurement in industrial fields. The aim of the experiment is to determine velocity of fluid at various. Pitot static tube that flow speed is proportional to the pressure difference between total.
This difference, called the dynamic pressure, can be used. This experiment will demonstrate how air flow speed is measured using a pitot static tube. Such flows are typically encountered in a wind tunnel test section free. Made by faculty at the university of colorado boulder, department of. Contours of static pressure of pitotstatic tube surface and free stream.
Coefficient of discharge triangular notch experiment. Pitot static tube apparatus velocity measurement device mech learn to earn. They are commonly used to measure air velocity, but can be use to measure the velocity of other fluids as well. However, improper installation of the pitot tube is actually inevitable, which causes additional errors. Using the pitot static tube and pressure tap with wind. The report should be written in such a way that anyone could replicate the performed experiment and obtain similar.
Subject fluid mechanics topic module 4 pitot tube lecture 30 faculty venugopal sharma gate academy plus is an effort to initiate free. Pdf pitotstatic tube response at very low reynolds numbers. The static pressure probe consists of a hypodermic needle type pitot. An application of bernoullis equation to a pitot static tube and its use on an airplane. Contours of mach number on nose head of pitotstatic geometry at 15 36 degree angle 33. Pdf the response of pitotstatic tubes in the very low reynolds number range re less than 1. A pitotstatic tube is a device which allows measurement of both the static and stagnation pressures. Streamlines around a blunt body note how some move to the left and some. The tank must be free to add more water during the experiment. In the previous programme we saw that the relationship between the pressure p, the velocity u and the elevation z of a flowing fluid is given by bernoullis equation. Pitot static tube apparatus velocity measurement device. Pdf acoustic reflectometry for pitottube blockage detection.
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