Effects of valve needle speed on flow characteristics in control valve for unit pump fuel system

Qiu, Tao; Dai, Houde; Lei, Yan; Liu, Yuwei

doi:10.1177/1687814018770791

Cited by 5 publications

(3 citation statements)

References 12 publications

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“…Zwart et al (2004) proposed a new multiphase flow TEM for predicting cavitation based on the Rayleigh-Plesset equation. The simulation accuracy of this cavitation model has been verified in many literatures (Ji et al, 2011(Ji et al, , 2012(Ji et al, , 2013Luo et al, 2012;Ducoin et al, 2012;Huang et al, 2014;Bannari et al, 2017;Taher et al, 2017;Qiu et al, 2018;Cheng et al, 2018). It has been implemented in the commercially available CFD package ANSYS CFX.…”

Section: Introductionmentioning

confidence: 74%

A cavitation model considering thermodynamic and viscosity effects

Pang

Yang

et al. 2018

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Purpose This study aims to develop and validate a new cavitation model that considers thermodynamic effects for high-temperature water flows. Design/methodology/approach The Rayleigh–Plesset equation and “B-factor” method proposed by Franc are used to construct a new cavitation model called “thermodynamic Zwarte–Gerbere–Belamri” (TZGB) by introducing the thermodynamic effects into the original ZGB model. Furthermore, the viscous term of the Rayleigh–Plesset equation is considered in the TZGB model, and the model coefficients are formulated as a function of temperature. Cavitating flows around the NACA0015 hydrofoil under different water temperatures (25°C, 50°C and 70°C) at the angle of attack of 5° are calculated. Findings Results of the investigated temperatures show good agreement with the available experimental data. Given that the thermodynamic and viscosity effects are included in the TZGB model and the model coefficients are treated as a function of temperature, the TZGB model shows better performance in predicting the pressure coefficient distribution and length of cavity than the original ZGB cavitation model and other models do. The TZGB model aims to determine the thermodynamic and viscosity effects and perform better than the other models in predicting the mass transfer rate, particularly in high-temperature water. Originality/value The TZGB model shows potential in predicting the cavitating flows at high temperature and the computational cost of this model is similar to that of the original ZGB model.

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Section: Introductionmentioning

confidence: 74%

A cavitation model considering thermodynamic and viscosity effects

Pang

Yang

et al. 2018

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“…The switching valve can be seen as a throttle plate with a regularly varying orifice diameter, each switch corresponding to a maximum opening and a zero opening. The equation for the gas mass flow rate of the solenoid switch valve is obtained as follows [40].…”

Section: Flow Analysis Of Switching Valvesmentioning

confidence: 99%

Balancing Control of an Absolute Pressure Piston Manometer Based on Fuzzy Linear Active Disturbance Rejection Control

Wu,

Zhai,

Gao

et al. 2023

Actuators

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As an international standard pressure-measuring instrument, the absolute pressure piston manometer’s working medium is gas, so the actual working process will be affected by many internal uncertainties and external disturbances, leading to its long stability time and poor performance. In this paper, a fuzzy linear active disturbance rejection control strategy (FLADRC) for absolute pressure piston manometers is proposed to address these problems. First, the characteristics of the main components are analyzed according to the actual working principle of the system to establish a theoretical model of the controlled system. Second, the corresponding linear active disturbance rejection controller (LADRC) is designed according to the model. The principle of fuzzy control is introduced to adaptively adjust the controller parameters of the LADRC in real time, which improves the disadvantages of the LADRC parameters, which are difficult to rectify and have poor immunity to disturbances due to fixed parameters, and the stability of the control method is subsequently demonstrated. Finally, a simulation model is built in the Simulink environment in MATLAB, and three different pressure operating points are selected for the corresponding experiments to make a comparative analysis with Kp, PID, and LADRC. The results show that FLADRC enables the absolute pressure piston manometer to achieve better stability and greater immunity to disturbances. This also verifies the effectiveness and feasibility of the control strategy in practical engineering applications.

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“…Lisowski et al [ 24 ] investigated the flow force acting on the spool during the initial opening phase of the spool gap. Qiu et al [ 25 ] investigated the effects of valve needle speed on flow characteristics, concluding that high valve needle speed leads to a large flow rate under large valve openings.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of the Microflow Characteristics in a V-ball Valve

Gao

Yang²,

Yang

et al. 2021

Micromachines

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V-ball valves are widely applied in many process industries to regulate fluid flow, and they have advantages of good approximately equal percentage flow characteristics and easy maintenance. However, in some applications, the V-ball valve needs to have good performance under both large and extremely small flow coefficients. In this paper, the improvement of the original V-ball valve is made and the flow characteristics between the original and the improved V-ball valve are compared. Two types of small gaps are added to the original V-ball, namely the gap with an approximately rectangular port and the gap with an approximately triangular port. The effects of the structure and the dimension of the gap on flow characteristics are investigated. Results show that within the gap, the flow coefficient increases but the loss coefficient decreases as the valve opening increases, and the flow coefficient has an approximately linear relationship with the flow cross-area of the added gap. Results also show that under the same flow cross-area, the flow coefficient has a higher value if the distance between the gap and the ball center is greater or if the gap is an approximately rectangular port, while the loss coefficient has an opposite trend.

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Effects of valve needle speed on flow characteristics in control valve for unit pump fuel system

Cited by 5 publications

References 12 publications

A cavitation model considering thermodynamic and viscosity effects

A cavitation model considering thermodynamic and viscosity effects

Balancing Control of an Absolute Pressure Piston Manometer Based on Fuzzy Linear Active Disturbance Rejection Control

Numerical Study of the Microflow Characteristics in a V-ball Valve

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