Abstract
A preliminary experimental work on a centrifugal pump model specifically designed to transport slurry and multiphase flows is presented. The impeller design corresponds to the so-called “Tesla Bladed Pump” adapted from an existing DiscflowTM pump design for the petroleum deep-sea application. The overall performance results of such a specific pump design are presented for different rotational speeds and discussed in relation to affinity laws coefficients. The results show that the performance of the tested disc pump strongly differs from the conventional centrifugal bladed pump. A one-dimensional approach using complete Euler relation is used to explain the differences in the present case. Moreover, it has been found that available results in open literatures do not correspond to the real optimum conditions, more detailed research work must be performed to get a better understanding on this kind of bladed disc pump.
Highlights
The initial basic idea concerning this specific pump device category is based on a simple first design invented around 1850 in the US
Since the Tesla bladed pump utilizes pressure and viscous forces to transport the fluids towards the impeller outlet section, classical conclusions coming from usual centrifugal pump design can be partially applied to the disc pump
The impeller outlet section, classical conclusions coming from usual centrifugal pump design can be partially applied to the disc pump
Summary
The initial basic idea concerning this specific pump device category is based on a simple first design invented around 1850 in the US (see Figure 1a) This first disc pump was built using a closed cylinder pierced by several holes to ensure flow rate. An example is given by a pump model tested by Yin [6], which is capable of reaching a total head of 120 m (of water) with a flow rate of 240 m3 /h at 2900 rpm These values can be obtained using an impeller outlet diameter of 0.32 m and purely radial straight blade shapes, Energies 2020, 13, 4873; doi:10.3390/en13184873 www.mdpi.com/journal/energies impellers that rotate at the same angular speed with a large gap in between. 2 shows the impeller crude design, compared with classical impeller allows the pumping and transport of a Energies 2020, 13, 4873 arrangement used for the present study, the so-called tesla bladed disc (TBD).
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