The mixed covolume method for the regularized long wave equation is devel- oped and studied. By introducing a transfer operator γh, which maps the trial function space into the test function space, and combining the ...The mixed covolume method for the regularized long wave equation is devel- oped and studied. By introducing a transfer operator γh, which maps the trial function space into the test function space, and combining the mixed finite element with the finite volume method, the nonlinear and linear Euler fully discrete mixed covolume schemes are constructed, and the existence and uniqueness of the solutions are proved. The optimal error estimates for these schemes are obtained. Finally, a numerical example is provided to examine the efficiency of the proposed schemes.展开更多
为了改善某公司原土壤修复一体机内破碎混拌结构的颗粒混匀效果,本文利用离散颗粒混合动力学原理和离散单元法(discrete element method,DEM)对系统内部破碎刀辊装置进行改进优化和仿真模拟。通过研究混合体系中土壤-药剂离散颗粒和混...为了改善某公司原土壤修复一体机内破碎混拌结构的颗粒混匀效果,本文利用离散颗粒混合动力学原理和离散单元法(discrete element method,DEM)对系统内部破碎刀辊装置进行改进优化和仿真模拟。通过研究混合体系中土壤-药剂离散颗粒和混合部件之间的相互作用、颗粒分布及碰撞次数、滚轴功率,运用混合均匀度、混合质量公式对混合效果进行评价,并探究了各转轴中引起功率变化的主要因素。计算模拟结果显示,第二代设备对土壤碰撞颗粒数的提升效果非常明显,爪机、上中下滚轴最佳运行转速为150r/min、300r/min、600r/min、600r/min,滚轴总功率为13.45kW,是实际滚轴额定总功率60kW的22.4%,该研究结果为改善土壤修复一体机性能提供了理论支撑和技术指导。展开更多
基金supported by the National Natural Science Fundation of China (No. 11061021)the Science Research of Inner Mongolia Advanced Education (Nos. NJ10006, NJ10016, and NJZZ12011)the National Science Foundation of Inner Mongolia (Nos. 2011BS0102 and 2012MS0106)
文摘The mixed covolume method for the regularized long wave equation is devel- oped and studied. By introducing a transfer operator γh, which maps the trial function space into the test function space, and combining the mixed finite element with the finite volume method, the nonlinear and linear Euler fully discrete mixed covolume schemes are constructed, and the existence and uniqueness of the solutions are proved. The optimal error estimates for these schemes are obtained. Finally, a numerical example is provided to examine the efficiency of the proposed schemes.
文摘为了改善某公司原土壤修复一体机内破碎混拌结构的颗粒混匀效果,本文利用离散颗粒混合动力学原理和离散单元法(discrete element method,DEM)对系统内部破碎刀辊装置进行改进优化和仿真模拟。通过研究混合体系中土壤-药剂离散颗粒和混合部件之间的相互作用、颗粒分布及碰撞次数、滚轴功率,运用混合均匀度、混合质量公式对混合效果进行评价,并探究了各转轴中引起功率变化的主要因素。计算模拟结果显示,第二代设备对土壤碰撞颗粒数的提升效果非常明显,爪机、上中下滚轴最佳运行转速为150r/min、300r/min、600r/min、600r/min,滚轴总功率为13.45kW,是实际滚轴额定总功率60kW的22.4%,该研究结果为改善土壤修复一体机性能提供了理论支撑和技术指导。
基金Supported by NSFC(No.11061021)the Science Research of Inner Mongolia Advanced Education(No.NJ10016,No.NJZZ12011)the National Science Foundation of Inner Mongolia Province(No.2011BS0102,No.2012MS0106)