Efficient two-way fluid–structure interaction simulation for performance prediction of pressure-compensating emitter

IF 4.4 1区农林科学 Q1 AGRICULTURAL ENGINEERING

Biosystems Engineering Pub Date : 2024-06-04 DOI:10.1016/j.biosystemseng.2024.05.015

Byung-hun Seo , Sangik Lee , Jong-hyuk Lee , Dong-su Kim , Ye-jin Seo , Dong-woo Kim , Won Choi

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引用次数: 0

Abstract

Drip irrigation using a high-performance pressure-compensating (PC) emitter is one of the essential components for precision agriculture, and it is necessary to accurately predict its performance prior to design. In this study, an efficient two-way fluid–structure interaction (FSI) simulation model was developed and verified through an enlarged model experiment. The computational fluid dynamics (CFD) and computational solid mechanics (CSM) models of the FSI simulation were systematically verified, and a calibration method for the overestimated flow rate in the re-rising range was applied. The CFD model was determined to be the shear stress transport turbulence model, and the CSM model was determined to be the Ogden hyperelastic model for the PC emitter. The minimum prediction error for the flow rate was 7.93%, which was within 10% for all cases. The simulation model demonstrated its efficiency by analysing the performance of a single PC emitter with an average total analysis time of 18.6 h. In addition, by comparing various cases according to the design parameters, it is considered that the hardness of the diaphragm has a significant impact on the design of low-pressure PC emitters. The simulation model of this study can accurately predict the performance of PC emitter under specific conditions, yet improvement of simulation model is required to be applied in design optimisation. Future studies may benefit from combining an improved FSI simulation with a surrogate model to further enhance optimisation efforts.

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用于压力补偿发射器性能预测的高效双向流固耦合模拟

使用高性能压力补偿（PC）辐射器进行滴灌是精准农业的重要组成部分之一，因此有必要在设计之前对其性能进行准确预测。本研究开发了一种高效的双向流固耦合（FSI）模拟模型，并通过放大模型实验进行了验证。对 FSI 模拟的计算流体动力学（CFD）和计算固体力学（CSM）模型进行了系统验证，并应用校准方法对再上升范围内被高估的流速进行了校准。CFD 模型被确定为剪应力传输湍流模型，CSM 模型被确定为 PC 发射器的奥格登超弹性模型。流量的最小预测误差为 7.93%，所有情况下的误差都在 10% 以内。通过分析单个 PC 发射器的性能，模拟模型证明了其高效性，平均总分析时间为 18.6 小时。此外，通过根据设计参数对各种情况进行比较，认为隔膜的硬度对低压 PC 发射器的设计具有重要影响。本研究的模拟模型可以准确预测 PC 发射器在特定条件下的性能，但还需要对模拟模型进行改进，以便应用于优化设计。未来的研究可能会受益于将改进的 FSI 模拟与代用模型相结合，以进一步加强优化工作。

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

Biosystems Engineering 农林科学-农业工程

CiteScore

10.60

自引率

7.80%

发文量

239

审稿时长

53 days

期刊介绍： Biosystems Engineering publishes research in engineering and the physical sciences that represent advances in understanding or modelling of the performance of biological systems for sustainable developments in land use and the environment, agriculture and amenity, bioproduction processes and the food chain. The subject matter of the journal reflects the wide range and interdisciplinary nature of research in engineering for biological systems.