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Numerical analysis of Counter-Rotating Pump (CRP) including inducer and centrifugal impeller
| Content Provider | Hyper Articles en Ligne (HAL) |
|---|---|
| Author | Dehnavi, Ehsan Kebdani, Mohamed Danlos, Amélie Bakir, Farid |
| Copyright Year | 2022 |
| Abstract | During the last decades, the rapid changes in designing turbomachines and the demand for more efficient and reliable turbomachines is the reason for the scientists and industries to pass over the conventional single-blade propellers and to create counter-rotating turbomachines. Centrifugal pumps are used over a wide variety of applications because of their large operating range and compact size; however, unstable performance and high consumption of energy are two main challenges in pump operation that can be solved by designing more efficient pumps. The inducer is an axial impeller with a low head coefficient that can avoid unexpected cavitation at upstream of the centrifugal impeller. The use of a pump with the ability to rotate the two rotors independently of each other has caused a dramatic change in their efficiency. More stable head characteristic curve, larger operating range with higher performance, and less cavitation are some of the counter-rotating pump (CRP) advantages. In this article, the CFD analysis of a centrifugal impeller with an inducer that can rotate independently is investigated. The effect of speed ratio on the counter-rotating centrifugal impeller with inducer is studied due to the different rotational speeds of inducer. The inducer and centrifugal impeller rotate with the same rotational speed and direction as a conventional pump which makes this step a reference to compare with new counter-rotating technology. Then, by changing the rotation speed of the inducer and keeping the same rotational direction, the effect of the speed ratio on the efficiency and static pressure of the pump in different flow rates is investigated. Finally, by reversing the rotating direction of the inducer and changing the speed ratio simultaneously, the effect of counter-rotation pump on the efficiency and static pressure is investigated and compared with the conventional pump. |
| Related Links | https://hal.science/hal-04281734/file/cfm2022_6605.pdf |
| Language | English |
| Publisher | HAL CCSD |
| Access Restriction | Open |
| Subject Keyword | Inducer Counter-Rotating Pump Cavitation Computational Fluid Dynamics Centrifugal impeller |
| Content Type | Text |
| Resource Type | Article |
| Subject | Computer Science |
