The simulation results show that this method can predict distribution of grains and effect of steep temperature gradients in HAZ. Comparison of simulated grain size and actual grain size has good consistency. 数值模拟可以预测HAZ中晶粒的分布及温度梯度对晶粒长大的阻碍作用,与实际晶粒大小较为吻合。
The heterogeneity of the migration may also be seriously influenced in actual basins by the heterogeneity of carriers that depends on sedimentary environment as well as the facies changes in macroscopic scale, and on grain size, cement content, degree of diagenesis, etc. 在实际盆地中,输导层往往是非均质的,在宏观上表现为岩性、岩相在盆地范围内的频繁变化,在微观上则主要受粒度大小、胶结物含量、成岩作用等的影响。
In order to improve actual performance of the material in application, a pharmaceutical extruder-rounder is used to turn the powder material into spherical grains of a certain grain size in order to facilitate its application in the treatment of industrial and domestic ammonia nitrogen wastewater. 为了提高材料的实际应用性能,本研究将医药用挤出-滚圆机引入实验,将粉体材料制备成一定粒径的球形多孔颗粒,以方便应用于工业和生活氨氮废水的处理。
The goal is to achieve uniform recrystallized grain size after deformation. The least-square deviation between the average grain size and the actual grain size is used as the objective function. The optimal design is carried out for the forging process. 以变形结束时的晶粒尺寸分布均匀性为目标,采用每个单元的平均晶粒尺寸与整个锻件的平均晶粒尺寸之差的平方和作为目标函数,对锻造过程进行了优化设计。
Then combined with the actual situation, chose 11 factors as auxiliary variables of the aluminum billet grain size. 然后结合实际情况,选择11个影响因素作为铝带坯晶粒度软测量的辅助变量。