3D numerical investigation of energy transfer and loss of cavitation flow in perforated plates

Fang, Liang; Li, Anjun; Wang, Zhenbo; Li, Shuxun

doi:10.1080/19942060.2020.1792994

Cited by 8 publications

(2 citation statements)

References 40 publications

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“…The viscosity of the mixture is: 𝜇 𝑚 = (1 − 𝛼 𝑣 )𝜇 𝑙 + 𝛼 𝑣 𝜇 𝑣 (4) Since the Reynolds number exceeds the critical value and the internal flow of the relief valve is turbulent and incompressible [30], the k-ε model is selected to describe the turbulent behavior. The flow rates of the relief valve computed using three models are similar, with a maximum variation percentage of roughly 5.8%, as shown in…”

Section: Mathematical Modelmentioning

confidence: 99%

CFD-Based Cavitation Research and Structure Optimization of Relief Valve for Noise Reduction

Qiu

Tian

et al. 2022

IEEE Access

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The cavitation flow of the cartridge pilot-operated relief valve's main valve port was numerically simulated and studied using Computational Fluid Dynamics (CFD) in our research, and the relief valve structure was modified to decrease cavitation noise. The findings indicate that cavitation in the relief valve occurs mostly downstream of the main valve port and is linked to the wall. Cavitation generation is influenced by the jet at the valve port. The closer the high-speed jet at the valve port is to the valve's inner wall, the more readily cavitation occurs. Conversely, there is less cavitation. This paper reports the effect of the forms and parameters of the main port structure on the jet angle and the morphology of cavitation. The structure of the spool's annular groove has a considerable influence on the cavitation attached to the spool wall and the valve sleeve wall, whereas the outlet position of the relief valve mostly impacts the intensity of cavitation near the valve sleeve wall. Based on this, the relief valve's optimized structure is designed, with which the maximum vapor volume fraction and total vapor volume of the cavitation flow are considerably decreased for various inlet pressures and spool openings. The results of the experiment show that following optimization, the noise of the relief valve drops dramatically, confirming that optimizing the structure has a beneficial impact on decreasing cavitation noise.

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Section: Mathematical Modelmentioning

confidence: 99%

CFD-Based Cavitation Research and Structure Optimization of Relief Valve for Noise Reduction

Qiu

Tian

et al. 2022

IEEE Access

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“…19 In addition, some researchers have directly analyzed the variation of the mechanical energy in the flow field to investigate the energy consumption and conversion. 20 However, the flow rate through the injectors of nozzles is the main indicator of energy consumption in the vortex spinning system. [21][22][23] However, an investigation related to energy consumption in the vortex spinning process has not been conducted.…”

mentioning

confidence: 99%

Effects of structural parameters on air consumption and mechanical energy characteristics of airflow in the vortex spinning nozzle

Xi,

Wang,

Wang

et al. 2024

Textile Research Journal

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Reducing energy consumption during textile production processes has currently become one of the key concerns. In order to design the nozzle of the vortex spinning machine with reduced air consumption, numerical simulation of the airflow in the nozzle is performed to investigate the effect of the length and the inlet diameter of the conical chamber in the intermediate section of the vortex tube on the air consumption and the mechanical energy characteristics of the airflow. A spinning experiment conducted to measure the flow rate and yarn tenacity is adopted to verify the numerical simulation results. The simulation results show that the air consumption of the nozzle is insignificantly affected as the length increases from 7.3 mm to 7.7 mm, while a decreasing trend has been found as the length increases from 7.7 mm to 8.1 mm. As the inlet diameter increases from 4.6 mm to 5.0 mm, the air consumption of the nozzle increases monotonically. The mechanical energy of airflow in the nozzle exhibits a minor difference between cases of lengths of 7.3 mm, 7.5 mm, and 7.7 mm, while it decreases significantly in cases of lengths of 7.9 mm and 8.1 mm. The mechanical energy of airflow in the vortex chamber increases as the inlet diameter increases. The experimental results are consistent with the numerical predictions. This work is expected to provide a reference for the design of the vortex spinning nozzle and an approach to reducing the energy consumption in the yarn production process.

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Application and evaluation of the evolutionary algorithms combined with conventional neural network to determine the building energy consumption of the residential sector

Wang,

Mukhtar,

Moayedi

et al. 2024

Energy

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3D numerical investigation of energy transfer and loss of cavitation flow in perforated plates

Cited by 8 publications

References 40 publications

CFD-Based Cavitation Research and Structure Optimization of Relief Valve for Noise Reduction

CFD-Based Cavitation Research and Structure Optimization of Relief Valve for Noise Reduction

Effects of structural parameters on air consumption and mechanical energy characteristics of airflow in the vortex spinning nozzle

Application and evaluation of the evolutionary algorithms combined with conventional neural network to determine the building energy consumption of the residential sector

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