CAJ | 학술논문

对矩方法进行研究,采用积分矩方法和直接积分矩方法对4个典型问题进行数值计算,分析比较了积分矩方法和直接积分矩方法的精度、效率以及稳定性.结果表明:与积分矩方法相比,用直接积分矩方法计算时计算效率略高、稳定性好,且计算结果的精度相当.结论对于两相流中颗粒参数的数值计算乃至了解颗粒的演变特性具有参考价值.
대구방법진행연구,채용적분구방법화직접적분구방법대4개전형문제진행수치계산,분석비교료적분구방법화직접적분구방법적정도、효솔이급은정성.결과표명:여적분구방법상비,용직접적분구방법계산시계산효솔략고、은정성호,차계산결과적정도상당.결론대우량상류중과립삼수적수치계산내지료해과립적연변특성구유삼고개치.
This paper studies the method of moments and takes advantage of both quadrature method of moment (QMOM) and direct quadrature method of moment(DQMOM) to study 10 classical problems. Through the simulation, the accuracy, efficiency and stability of the two techniques are analyzed and compared with each other. The results show that DQMOM has a little higher efficiency, better stability and the same accuracy in comparison with QMOM. This conclusion is referential for the simulation of particulate parameters in multiphase flow and even of great importance for understanding the characteristic of evolution of particle system.