MR-HM 150.08 Measurement of Jet Forces Educational Equipment Hydrodynamics Laboratory equipment Description • investigation of jet forces on deflectors • demonstration of the principle oflinear momentum • four interchangeable deflectorswith different deflection angles During deceleration, acceleration anddeflection of a flowing fluid, there is achange of velocity and thus a change inmomentum. Changes in momentum result in forces. In practice, the motiveforces are used to convert kinetic energy into work done, for example in aPelton turbine. In MR-HM 150.08 jet forces are generatedand studied with the aid of a water jetthat acts on and is diverted by an interchangeable deflector. The experimental unit includes a transparent tank, a nozzle, four interchangeable deflectors with different deflectionangles and a weight-loaded scale. Theforce of the water jet is adjusted via the flow rate. Experiments study the influence of flowvelocity and flow rate as well as of different deflection angles. The jet forces generated by the water jet are measured onthe weight-loaded scale. The forces are calculated using the momentum equation and compared with the measurements. The experimental unit is positioned easily and securely on the work surface ofthe MR-HM 150 base module. The water issupplied and the flow rate measured byMR-HM 150. Alternatively, the experimentalunit can be operated by the laboratorysupply. Learning objectives/experiments • demonstration of the principle of linearmomentum • study of the jet forces • influence of flow rate and flow velocity • influence of different deflection angles Specification [1] investigation of jet forces and demonstration of theprinciple of linear momentum [2] tank made of transparent material for observingthe experiments [3] nozzle for generating the water jet [4] jet force can be adjusted via flow rate [5] four different shaped deflectors: flat surface, oblique surface, semi-circular surface, conicalsurface [6] measurement of the jet forces via the weightloaded scale [7] flow rate determined by MR-HM 150 base module [8] water supply using MR-HM 150 base module or vialaboratory supply Technical data Tank • inner diameter: 200mm • height: 340mm Nozzle • diameter: 10mm Deflector • flat surface: 90° • oblique surface: 45°/135° • semi-circular surface: 180° • conical surface: 135° Weights • 4x 0,2N • 3x 0,3N • 2x 1N • 2x 2N • 2x 5N LxWxH: 400x400x880mm Weight: approx. 23kg Required for operation MR-HM 150 (closed water circuit) or water connection,drain Scope of delivery 1 experimental unit 1 set of weights 4 deflectors 1 set of instructional material
