Increased-accuracy simulations and tests of flow characteristics in plastic hydraulic valves for precise control of fluid flow

IF 2.7 3区工程技术 Q2 ENGINEERING, MECHANICAL

Flow Measurement and Instrumentation Pub Date : 2025-08-13 DOI:10.1016/j.flowmeasinst.2025.103024

Urszula Warzyńska , Michał Banaś

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引用次数: 0

Abstract

Pressure drops on the working fluid flow control valves in hydraulic drive systems have a decisive impact on high-precision control of hydraulic receivers. The flow rate-dependent characteristics of pressure drop can be used to make informed decisions on the shape of poppet-seat pairs and to improve the operating parameters of the drive system. This fact is of particular importance in the designing of new hydraulic valves which can be manufactured with the use of modern manufacturing technologies (e.g. additive manufacturing). This article presents the results of CFD simulations of hydraulic oil flow through the flow-control valve, verified in experimental tests on a test stand. The tests focus on the flow through small control gaps, within the lift range from 0.25 to 1.5 mm, and indicate a high level of consistency between the CFD model and the experimental results. The research result is a numerical model which enables the representation of flow characteristics in hydraulic valves and thus allows a fast CFD analysis at a certain accuracy level. It also allows the significance of the set numerical parameters, including the mesh parameters and the turbulence model, to be estimated from the perspective of its impact on the calculation accuracy of pressure drops on the valve. The numerical model is a basis for designing further prototypes of modern “green” plastic hydraulic elements to be used in zero-emission drive systems.

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精确控制流体流动的塑料液压阀中流量特性的精度更高的模拟和测试

液压传动系统中工作液流量控制阀的压降对液压接收机的高精度控制有着决定性的影响。压降的流量依赖特性可以用来对抽油杆-阀座副的形状做出明智的决定，并改善驱动系统的操作参数。这一事实在设计新型液压阀时尤其重要，这些液压阀可以使用现代制造技术（例如增材制造）制造。本文介绍了液压油通过流量控制阀的CFD模拟结果，并在试验台进行了实验验证。测试集中在小的控制间隙内，在0.25 ~ 1.5 mm的升力范围内，表明CFD模型与实验结果高度一致。研究结果是一个能够表示液压阀内部流动特性的数值模型，从而可以在一定精度水平上进行快速CFD分析。它还允许从其对阀上压降计算精度的影响的角度来估计所设置的数值参数的意义，包括网格参数和湍流模型。该数值模型为进一步设计用于零排放驱动系统的现代“绿色”塑料液压元件原型奠定了基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Flow Measurement and Instrumentation 工程技术-工程：机械

CiteScore

4.30

自引率

13.60%

发文量

123

审稿时长

6 months

期刊介绍： Flow Measurement and Instrumentation is dedicated to disseminating the latest research results on all aspects of flow measurement, in both closed conduits and open channels. The design of flow measurement systems involves a wide variety of multidisciplinary activities including modelling the flow sensor, the fluid flow and the sensor/fluid interactions through the use of computation techniques; the development of advanced transducer systems and their associated signal processing and the laboratory and field assessment of the overall system under ideal and disturbed conditions. FMI is the essential forum for critical information exchange, and contributions are particularly encouraged in the following areas of interest: Modelling: the application of mathematical and computational modelling to the interaction of fluid dynamics with flowmeters, including flowmeter behaviour, improved flowmeter design and installation problems. Application of CAD/CAE techniques to flowmeter modelling are eligible. Design and development: the detailed design of the flowmeter head and/or signal processing aspects of novel flowmeters. Emphasis is given to papers identifying new sensor configurations, multisensor flow measurement systems, non-intrusive flow metering techniques and the application of microelectronic techniques in smart or intelligent systems. Calibration techniques: including descriptions of new or existing calibration facilities and techniques, calibration data from different flowmeter types, and calibration intercomparison data from different laboratories. Installation effect data: dealing with the effects of non-ideal flow conditions on flowmeters. Papers combining a theoretical understanding of flowmeter behaviour with experimental work are particularly welcome.