Analysis of cavitation flow in conical throttle valve with different cone angle

He, Jie; Li, Beibei; Liu, Xiumei

doi:10.1049/joe.2018.9008

Cited by 4 publications

(2 citation statements)

References 13 publications

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“…When calculating the flow field, the steady state solution is adopted first, and the result of steady state convergence is taken as the initial result of transient; The flow field is set as follows: open the turbulence model and hang k-ɛ Turbulence model; Open the energy equation and set the temperature to 110 ℃; Media types are added according to the actual situation; The inlet and outlet are set as boundary conditions, with an inlet pressure of 16.9 Mpa and an outlet pressure of 0.9 Mpa; Set the convergence residual value to 10-4, and calculate the flow field information according to the above settings; As the disc assembly is the main adjusting element, its pressure change is mainly generated in this part, so only the pressure, velocity and other flow field information of this part are given as shown in Fig. 6 [12] .…”

Section: Flow-induced Noise Analysis 421 Flow Field Information Calcu...mentioning

confidence: 99%

Acoustic resonance analysis of new water drop labyrinth control valve for thermal power units

2023

IJFET

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In order to study the acoustic resonance effect of a new type of water drop labyrinth regulating valve, the structural modal information and flow field information of the regulating valve under typical operating conditions are calculated by using ANSYS; Then the distribution characteristics of flow-induced noise of the regulating valve are calculated by using LMS software and acoustic boundary element method. The results show that the minimum structural natural vibration frequency of the regulating valve is 133.29 Hz; The noise distribution of the valve is low frequency, and the maximum flow-induced noise can reach 142 dB, and the main frequency of the noise generated is 60 Hz~125 Hz; Therefore, according to the structural resonance conditions of the valve, the new water drop labyrinth regulating valve will not produce acoustic resonance due to flow-induced noise.

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Section: Flow-induced Noise Analysis 421 Flow Field Information Calcu...mentioning

confidence: 99%

Acoustic resonance analysis of new water drop labyrinth control valve for thermal power units

2023

IJFET

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“…To obtain the key factors affecting valve cavitation, Liu et al (2020b), He et al (2019), Ou et al (2022), Yuan et al (2022) and Liu and Yan (2020) analyzed the cavitation development process in the control valve under different inlet pressures, spool angles, openings, etc. and obtained the direct relationship between those variables and cavitation.…”

Section: Introductionmentioning

confidence: 99%

Cavitation characteristics and energy loss in high-pressure differential control valve

Jin

Wen

Wang

et al. 2023

HFF

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Purpose The purpose of this study is to determine the cavitation flow characteristics of the high-pressure differential control valve. The relationship between cavitation, flow coefficient and spool angle is obtained. By analyzing the relationship between different spool angles and energy loss, the energy loss at different spool angles is predicted. Design/methodology/approach A series of numerical simulations were performed to study the cavitation problem of a high-pressure differential control valve using the RNG k–e turbulence model and the Zwart cavitation model. The flow states and energy distribution at different spool angles were analyzed under specific working conditions. Findings The cavitation was the weakest when the spool angle was 120° or the outlet pressure was 8 MPa. The pressure and speed fluctuations of the valve in the throttle section were greater than those at other locations. By calculating the entropy production rate, the reason and location of valve energy loss are analyzed. The energy loss near the throttling section accounts for about 92.7% of the total energy loss. According to the calculated energy loss relationship between different regions of the spool angle, the relationship between any spool angle and energy loss in the [80,120] interval is proposed. Originality/value This study analyzes the cavitation flow characteristics of the high-pressure differential control valve and provides the law of energy loss in the valve through the analysis method of entropy. The relationship between spool angle and energy loss under cavitation is finally proposed. The research results are expected to provide a theoretical basis for the optimal design of valves.

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Numerical investigations of the influences of valve spool structure on the eccentric jet flow characteristic in high-pressure angle valves

Li,

Lu,

2024

Energy

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Analysis of cavitation flow in conical throttle valve with different cone angle

Cited by 4 publications

References 13 publications

Acoustic resonance analysis of new water drop labyrinth control valve for thermal power units

Acoustic resonance analysis of new water drop labyrinth control valve for thermal power units

Cavitation characteristics and energy loss in high-pressure differential control valve

Numerical investigations of the influences of valve spool structure on the eccentric jet flow characteristic in high-pressure angle valves

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