A Novel Pressure Drop Model for Seabed Airlift Devices Considering the Particle Sinking Effect
Existing pressure drop model (PDM) ignores the particle sinking phenomenon in airlift devices and predict a much lower value than the actual one, which causes poor performance in the design and operation of airlift device. To solve this problem, a new PDM was proposed by considering this sinking phe...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2025-07-01
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| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.jafmonline.net/article_2707_5640e0c86a170c4f5a24141e435df811.pdf |
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| Summary: | Existing pressure drop model (PDM) ignores the particle sinking phenomenon in airlift devices and predict a much lower value than the actual one, which causes poor performance in the design and operation of airlift device. To solve this problem, a new PDM was proposed by considering this sinking phenomenon. Firstly, the particle sinking velocity in the airlift device was analyzed. Then, the phase volumetric fraction and phase velocity were calculated by considering this sinking effect. At last, a new pressure drop was derived from the calculated volumetric fractions and velocities. A distribution calculation method was proposed for calculating this new method and an experiment was conducted to verify the correctness of this new model. It was found that this new model has a high prediction accuracy with an error margin of 11%, which improves 12% compared with traditional models. This investigation proposed an accurate PDM and illustrated the effects of the particle sinking phenomenon on the hydrodynamics of gas liquid particle flow, which not only fills the gap in the PDM for ore airlift device, but also is beneficial to improve pump performance for high-efficiency transportation in ocean engineering. |
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| ISSN: | 1735-3572 1735-3645 |