impact of jet theory

The following cases of the impact of jet ie. Lab A Fluid - Impact Jet V1.

The impact of jet experiment helps us to understand how does turbines works under fluid pressure.

. Impact of a jet experiment jordan university of scince and technology factuly of engineering mechanical engineering department thermofluid lab exp impact of. The aim of the experiment is to compare the forces acting on the two metal plates. The flow rate is determined with the use of a weighing tank and a stopwatch.

The jet impact force is regarded as a quasistatic concentrated force. F1-10 hydraulics bench 2. 0 2 𝑢.

The jet apart from that part where it flows over the surface of the vane is atmospheric. The force exerted by the surface on the jet is then obtained by applying Newtons Second Law ie. When a jet of water strikes a surface its velocity and hence its momentum is changed.

Applying momentum equation in z- direction force exerted by the jet on the vane Fz is given by F ρQ Vzout- VZ in For flat plate Vz out 0 Fz ρQ 0-v. C IMPACT OF JET EXPERIMENT 1 Aim To find the impact force caused by a fluid jet on a horizontal plate and a hemispherical shell and compare it with the expected theoretical force. The preview contains 6 out of 8 pages.

Share your documents to get free Premium access. The Impact of a Jet apparatus shows students the force produced by a jet of water as it strikes a flat plate or. This experiment uses water jets impacting on metal plates to look at Newtons second law.

The amount of rebound would depend on the coefficient of restitution. Impact of jet Introduction. The following equipment is required to perform the impact of the jet experiment.

F x m V i cos θ V i For incompressible flow density is constant the force exerted on the target surface in the direction of the incident jet is Impact force is θ 1 cos F x m V i and m ρ Q v ρ A V n Therefore the Experimental Impact Force F x exp. You can find the velocity. The study of these reaction forces is an essential step in the subject of mechanics of fluids which can be applied to hydraulic machinery such as the.

Impact of a Jet Purpose The purpose of this experiment is to demonstrate and verify the integral momentum equation. To understand correctly how a turbine a Pelton wheel for example works students need to understand how jet deflection produces a force on turbine vanes. You are currently viewing a preview.

The force normal to the surface is equal to the rate of change of momentum or change of momentum per second normal to the surface. F1-16 impacts of a jet apparatus with three flow deflectors with deflection angles of 90 120 and 180 degrees and 3. IMPACT OF A JET.

The force exerted by the jet on a plate will be considered Force exerted by the jet on a stationary plate 1 Plate is vertical to the jet 2 Plate is inclined to the jet 3 Plate is curved Force exerted by the jet on a moving plate 1 Plate is vertical to the jet 2 Plate is inclined to the jet 3 Plate is curved. Therefore neglecting the effect of gravity the changed direction of the jet is due solely the force generated by pressure and shear stress at the vanes surface. Volumetric Hydraulic BenchWater 3.

2 METHOD The water is supplied to the jet apparatus in a closed loop by a pump. ρ is the density of water 1000 Kgm3. You need a Premium account to see the full document.

Impact OF JET lab manual sahaja. The force equals jet stagnation pressure numerically and acts on a semi-infinite elastic body. The forces exerted on the surface plane will also depend on the density of fluid at specific.

Impact of jets apparatus enables experiments to be carried out on the reaction force produced on vanes when a jet of water impacts on to the vane. The aim of this research was to determine the impulse momentum theorem as it was applied to the impact of a water jet on vanes with different geometrical shapes. Newtons second law of motion states that the force acting on a body is equal to the rate of change of momentum.

At the vane using. If a vertical water jet moving with velocity V made to strike a target Vane which is free to move in vertical direction force will be exerted on the target by the impact of jet. 3 different shape of vanes.

Vy2 final velocity after impingement where V QA. Equation used to determine the force of jet impact Fy is given as. B to calculate the theoretical reaction force on a pl.

Based on the elastic intensity theory when the jet impact force surpasses the intensity of rock the rock is destroyed. S is the nominal distance from the nozzle tip to impact point on vane 35 mm. 0 2 𝑢.

If this force on the jet in the direction of x be denoted by Fj then the momentum equation in. The learning objectives of this lab are to a observe the force exerted on a surface by a fluid jet. In order to calculate the force caused by impact of jet onto a flat plate principle of change in momentum is applies ie ë é 3 8 Ü á 8 â è ç Where ë is the summation of all the forces acting in X-direction similar equations also be written in Y and Z direction.

Fy Q Vy1 - Vy2 cos Vy1 initial velocity. The mechanical work produced by using pressure of moving fluid at a high velocity jet of water from nozzle produces force when it strikes on the plane of the surface of the plate. The force generated by a jet of water deﬂected by an impact surface is measured and compared to the momentum change of the jet.

They also need to know how this force affects the rate of momentum flow in the jet. Apparatus The experimental apparatus consists of a water nozzle a set of impact surfaces a spring scale. Flat Plate Conical Cup and Hemispherical Cup 4.

2 Theory When a rubber ball strikes a solid surface it nicely rebounds from the solid surface. Up to 10 cash back Under the impact of the jet impact pressure the rock in the center of the jet will undergo compression deformation and failure and the rock at a certain distance from the center of the jet will generate circumferential shear cracks. Of the jet as it is deflected by the vane is less than the velocity u at exit from the nozzle because of the deceleration due to gravity.

The Jet Impact Apparatus as shown in the figure 2. Stopwatch for timing the flow measurement.

Experiment 5 Impact Of A Jet Applied Fluid Mechanics Lab Manual