Impact of the internal flow in a jet fish pump on the fish

Long, Xinping; Xu, Mingang; Lyu, Qiao; Zou, Jialin

doi:10.1016/j.oceaneng.2016.09.027

Cited by 24 publications

(12 citation statements)

References 26 publications

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“…However, if the pumping speed is too low, the fish can actively swim against the current, resulting in the inability to capture the target. When the pumping speed is higher than the limit flow rate of the fish, the fish cannot continue to swim upstream, and the limit flow rate of the fish is in the range of 0.6-1.2 m/s (Long et al, 2016a(Long et al, , 2016bXu et al, 2018). In this study, four pump flows of 7.84 m 3 /h (0.6 m/s), 10.45 m 3 /h (0.8 m/s), 13.07 m 3 /h (1.0 m/s), and 15.68 m 3 /h (1.2 m/s) were selected to simulate and analyze the hadal snailfish collision process.…”

Section: Finite Element Model Of the Hadal Snailfishmentioning

confidence: 99%

A novel active deep-sea low-damage pressure-retaining organisms sampler

Liu

Jin²,

Peng³

et al. 2022

Front. Mar. Sci.

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Capturing less damaged organisms samples is the basis for research on the biological communities, living environments, biological life compositions, and biological tissue structures of organisms livinin the deep seabed. The hadal snailfish is pressure-tolerant, cold-tolerant, and easily damaged. This research used a hydraulic suction macro-biological pressure-retaining sampler (HSMPS) to capture less damaged hadal snailfish samples via pumping. As the hadal snailfish is sucked into the macro-organism pressure-maintaining sampler, it inevitably collides with the suction pipe in the diversion area (SPDA) and the inner wall of the pressure-maintaining cylinder in the pressure-maintaining area (PCPA). Therefore, a finite element analysis model of a hadal snailfish with a real geometric shape was constructed by obtaining the material mechanical properties of different parts of the fish on the seabed through static compression tests, and the dynamic modeling and response analysis of the hadal snailfish during the capture process was carried out. Moreover, the dynamic response changes of the stress, strain and acceleration of various tissues and organs of the hadal snailfish during the capture process were determined, thereby providing technical support for the research and development of marine biological sampling equipment.

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Section: Finite Element Model Of the Hadal Snailfishmentioning

confidence: 99%

A novel active deep-sea low-damage pressure-retaining organisms sampler

Liu

Jin²,

Peng³

et al. 2022

Front. Mar. Sci.

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“…The accuracy of all pressure gauges is 0.1%. The flow rates are measured with turbine flow meters (5,6,7 in Fig. 8), and the accuracy of all flow meters is 0.5%.…”

Section: Test Rig and Schemementioning

confidence: 99%

Improvement of Mathematical Model and Coefficients Identification of Adjustable Jet Pumps

Youfu¹,

Wu²,

Yang³

et al. 2022

Preprint

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Compared with fixed jet pumps (FJPs), adjustable jet pumps (FJPs) have a wider application potential in heating and other fields. However, the existing mathematical model of FJPs cannot accurately describe the performance of AJPs. In this paper, on the basis of considering the influence of the position of the needle on the performance of the adjustable jet pump, the existing mathematical model of FJPs is improved and simplified to characterize AJPs. Furthermore, the coefficients in the mathematical model are identified by genetic algorithm. After verification, the average error between the flow rate obtained by the mathematical model and the measured value is within 2%.

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“…Thus, a longer throat should produce a more sufficient momentum exchange. However, the throat length was not suit to be too long, as said by Long et al (2016) who did some experiments in water-water annular jet pump (water as working fluid) and found that a long throat produced a large pressure drop throughout the throat. But in our experiment, it could be found that the maximal throat length 75 mm showed the best pump performance because the gas, liquid, solid phases were still not fully mixed in such a long throat.…”

Section: Effects Of Avi Geometry On Pump Performancementioning

confidence: 99%

An Intermittent Flow Structure in Airlift Pump by Using an Annular Venturi Injector

Wang

Liao

Wang

2021

JAFM

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An annular venturi injector (AVI) was proposed to form an intermittent flow structure in airlift pump for a good pump performance. Experiments were conducted to investigate the performance of the airlift pump with this AVI by comparing with pump performance with traditional injectors, at a series of air flow rates . It was found that airlift pump with AVI had higher flow rates of output liquid and particle, than those with the traditional injectors. This AVI promoted the gas core to collapse and formed an intermittent flow structure in rising pipe. For this intermittent structure, its slug length, firstly increased to a maximal value with increasing gas flow rate and then remained stable even under a high gas flow rate, while its slug frequency decreased with gas flow rate and then remained to a minimal value under a high gas flow rate.

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Impact of the internal flow in a jet fish pump on the fish

Cited by 24 publications

References 26 publications

A novel active deep-sea low-damage pressure-retaining organisms sampler

A novel active deep-sea low-damage pressure-retaining organisms sampler

Improvement of Mathematical Model and Coefficients Identification of Adjustable Jet Pumps

An Intermittent Flow Structure in Airlift Pump by Using an Annular Venturi Injector

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