Fig 10 - uploaded by Megavath Vijay Kumar
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Effect of manufacturing inaccuracy Shown each time after taking the readings of one nozzle plate, the nozzle plate was reversed and the experiment was repeated. This was because of the considerable variation noticed of the jet pump performance for two cases which might be due to manufacturing inaccuracy in drilling holes on the plates. So after taking the readings on both sides, jet pump performance was determined and the side of the nozzle plate which exhibited higher efficiency was chosen as the right one.
Source publication
Water is central to survival, without water human, plant and animal life would be impossible. Therefore supply of water has become one of the fundamental requirements of any society and the need to transfer water has generated the design of various forms of mechanical devices, which can be categorized as pumps. Jet pump is a device that performs it...
Citations
... Nanda et al. [7] presented two significant experimental results of the influence of the angle of placement and of the depth: at constant depth, the jet pump works better in the vertical position, but, as the depth is changing, inclined positions are better once the flow is commenced. Kandula and Kumar [8] show that small manufacturing errors in the nozzle plate holes result in a considerable change in the performance of the jet pump. A jet pump with multihole nozzle, having a smaller number of holes, with a smaller pitch circle diameter and a smaller mixing tube diameter yields higher efficiencies. ...
The paper presents experimental PIV measurements of axial and fluctuating velocity in a set of four air jet pump demonstrators of different geometries, including a baseline solution and three geometries that had been optimized from an acoustic standpoint by numerical simulations. The changes in the flow field introduced by the geometrical modifications of the jet pump with respect to the baseline solution are analyzed.
Jet pumps use the energy of a pressurized fluid stream (air, steam, water, or other fluid) to induce flow of a second larger quantity of fluid with which it mixes. This chapter presents drive and suction flow mixing section models that, when networked with appropriate loss coefficient data for the various jet pump components, can predict liquid jet pump performance up to the accuracy needed for design purposes. Mixing section coefficients and loss coefficients are networked to characterize the hydraulic performance of the drive flow and suction flow paths. Calculation procedures for flow losses are normally based on simple one‐dimensional flow concepts utilizing loss coefficient data realized by experiment. The Mathcad software program used to solve the example problem was upgraded to account for density and viscosity differences between the drive and suction liquids as a function of M‐ratio.
