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Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates

There is a contradiction between the calculation accuracy and cost when computing the pressure and flow rate. A throttling characteristics prediction methodology for directional spool valve was proposed to balance the contradiction. The throttling characteristics were represented by the flow-number,...

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Detalles Bibliográficos
Autores principales: Chen, Yuanliu, Wang, Anlin, Li, Xiaotian
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Elsevier 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10590940/
https://www.ncbi.nlm.nih.gov/pubmed/37876461
http://dx.doi.org/10.1016/j.heliyon.2023.e21029
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author Chen, Yuanliu
Wang, Anlin
Li, Xiaotian
author_facet Chen, Yuanliu
Wang, Anlin
Li, Xiaotian
author_sort Chen, Yuanliu
collection PubMed
description There is a contradiction between the calculation accuracy and cost when computing the pressure and flow rate. A throttling characteristics prediction methodology for directional spool valve was proposed to balance the contradiction. The throttling characteristics were represented by the flow-number, defined as the product of the flow coefficient and the orifice area, to reveal simultaneously the mapping relationships of the two versus the spool geometry, stroke and flow rate. The pressure and flow rate characteristics at different strokes were obtained through the computational fluid dynamic (CFD) simulations that were validated through bench testing. The concept of saturated flow-number theory was introduced to describe the effects of the flow rate on the flow-number. Models for the saturated flow-number and critical flow rate were established using the U-shape groove, a typical throttling structure, as an example to illustrate the effects of groove structure and opening. The throttling characteristics of the directional spool valve could be predicted by the flow-numbers of the combined grooves. The simulated and experimental results demonstrate that the prediction methodology achieves high calculation accuracy while incurring minimal costs. This methodology holds significant implications for the forward design of valve spool throttling structures.
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spelling pubmed-105909402023-10-24 Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates Chen, Yuanliu Wang, Anlin Li, Xiaotian Heliyon Research Article There is a contradiction between the calculation accuracy and cost when computing the pressure and flow rate. A throttling characteristics prediction methodology for directional spool valve was proposed to balance the contradiction. The throttling characteristics were represented by the flow-number, defined as the product of the flow coefficient and the orifice area, to reveal simultaneously the mapping relationships of the two versus the spool geometry, stroke and flow rate. The pressure and flow rate characteristics at different strokes were obtained through the computational fluid dynamic (CFD) simulations that were validated through bench testing. The concept of saturated flow-number theory was introduced to describe the effects of the flow rate on the flow-number. Models for the saturated flow-number and critical flow rate were established using the U-shape groove, a typical throttling structure, as an example to illustrate the effects of groove structure and opening. The throttling characteristics of the directional spool valve could be predicted by the flow-numbers of the combined grooves. The simulated and experimental results demonstrate that the prediction methodology achieves high calculation accuracy while incurring minimal costs. This methodology holds significant implications for the forward design of valve spool throttling structures. Elsevier 2023-10-14 /pmc/articles/PMC10590940/ /pubmed/37876461 http://dx.doi.org/10.1016/j.heliyon.2023.e21029 Text en © 2023 The Authors https://creativecommons.org/licenses/by-nc-nd/4.0/This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Research Article
Chen, Yuanliu
Wang, Anlin
Li, Xiaotian
Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title_full Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title_fullStr Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title_full_unstemmed Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title_short Throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
title_sort throttling characteristics prediction methodology for combined grooves in directional spool valves under variable flow rates
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10590940/
https://www.ncbi.nlm.nih.gov/pubmed/37876461
http://dx.doi.org/10.1016/j.heliyon.2023.e21029
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