摘要
综述了离散元法在涉及农业工程领域特别是在农业机械化方面应用的研究成果。对颗粒离散元法的优点和存在问题进行了分析和评述;指出在模型和算法上还需要较长时间的完善。同时,提出今后研究的重点:一是通过数值模拟与实验的比较,对颗粒接触模型进行验证和改进;二是尝试采用多微机并行计算,扩大计算规模,以便提高模拟定量化水平,适应精准农业对机械化过程中散体处理的要求。
Applications of the Discrete Element Method to agricultural engineering were briefly reviewed, in which the use for agricultural mechanization was high-lighted. Advantages and problems of the method were analyzed and evaluated, which suggests further improvement of the modeling and related methodology. Therefore, the following study needs to be focused on two main objectives: one is examination and improvement of particle contact models with comparison between numerical simulation and experiments, the second is approach on multi-computer parallelization for the enlargement of computing scale, so as to simulate particulate problem quantitatively and meet the need of modern precise agricultural process with agricultural granules. [
出处
《农机化研究》
北大核心
2004年第5期26-30,共5页
Journal of Agricultural Mechanization Research
基金
国家自然科学基金资助项目(19972075)。
关键词
离散元法
农业机械化
应用评述
数值模拟
agricultural engineering
discrete element method
summarize
agricultural mechanization
