计算流体力学在农业工程中的应用现状与发展趋势

doi:10.13304/j.nykjdb.2022.0300

摘要/Abstract

摘要：

计算流体力学（computational fluid dynamics，CFD）是基于计算机数值计算和图像显示进行系统分析的方法，常用于分析农业装备中的气固、气液两相流等流动机理，是农业装备数字化设计的新手段，在农业工程领域具有良好的应用前景。总结归纳了CFD在模拟农业物料时常用的计算模型及其在农业装备中的应用情况，结合CFD在农业工程领域应用实例，就如何适应农业工程未来发展需要，提出了CFD未来的发展趋势。分析表明，农业装备由于作业对象种类繁杂且易损伤，需充分考虑其作业对象的物理特性及各部件相互关系，多学科耦合分析、精细化建模和高保真仿真实时预测应当是CFD未来发展的趋势。

关键词: 计算流体力学, 农业工程, 计算模型

Abstract:

Computational fluid dynamics （CFD） is a method for systematic analysis based on computer numerical calculation and image display. It is often used to analyze the flow mechanisms of gas-solid and gas-liquid two-phase flow in agricultural equipment. It is a new method for digital design of agricultural equipment， which has good application prospects. The commonly used calculation models of CFD in simulating agricultural materials and its application in agricultural equipment were summarized.Combined with the application of agricultural engineering， the future development trend of CFD was proposed on how to adapt to the future development needs of agricultural engineering. The results indicated that， due to the complex types of operation objects and easy damage of agricultural equipment， it was necessary to fully consider the physical characteristics of the operation objects and the relationship among components. The multidisciplinary coupling analysis， fine modeling and real-time prediction of high fidelity simulation would be the future development trend of CFD.

Key words: computational fluid dynamics, agricultural engineering, caculation model, literature review

中图分类号:

S226.6

肖瑶, 吴明亮. 计算流体力学在农业工程中的应用现状与发展趋势[J]. 中国农业科技导报, 2023, 25(8): 1-9.

Yao XIAO, Mingliang WU. Application Status and Development Trend of Computational Fluid Dynamics in Agricultural Engineering[J]. Journal of Agricultural Science and Technology, 2023, 25(8): 1-9.

图/表 6

图1 CFD软件求解流程

Fig. 1 CFD software solution flow

图2 气送式排种系统［23］

Fig. 2 Pneumatic seeding system［23］

图3 气送式喷雾机导流器［26］

Fig. 3 Air-driven sprayer deflector［26］

图4 纵轴流清选装置［30］

Fig. 4 Longitudinal axial flow cleaning device［30］

图5 连栋温室［33］

Fig. 5 Multiple greenhouse［33］

图6 储粮干燥仓［37］

Fig. 6 Grain storage dry warehouse［37］

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