Three-dimensional simulation using fixed coarse-grid thermal-fluid scheme and conduction heat transfer scheme in distinct element method
Three-dimensional simulation using fixed coarse-grid thermal-fluid scheme and conduction heat transfer scheme in distinct element method
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DOI：
10.1016/j.powtec.2006.04.003
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发表时间：
2006-07
影响因子：
5.2
通讯作者：
Y. Shimizu
中科院分区：
文献类型：
--
作者：
Y. Shimizu
本文提出了一种基于拉格朗日-欧拉混合方法的粒子-热-流耦合三维数值模拟方法。清水，2004年。“流体耦合在PFC 2D和PFC 3D”，数值模拟在微观力学通过粒子方法-2004年，第二届国际PFC会议的论文集，Pakeema，2004年，pp。281-287]。该格式在Eulerian笛卡尔坐标系下数值求解连续性方程、Navier-Stokes（N-S）方程和热能方程，然后考虑粒子的存在，导出每个固定单元的压力、速度矢量和温度。另一方面，来自流体的驱动力和热能分别作为力-位移定律和热传递计算中的外部体力和源项施加到颗粒。本文描述了流体和颗粒的热方案。二维和三维的模拟结果，涉及流体和颗粒内的传导传热的强制对流传热。
Three-dimensional simulation using particle–thermal-fluid coupling scheme with a mixed Lagrangian–Eulerian approach is presented and the scheme is described by extending author's previous research [Y. Shimizu, 2004. “Fluid Coupling in PFC2D and PFC3D”, numerical modeling in micromechanics via particle methods—2004, Proceeding of 2nd International PFC Conference, Balkema, 2004, pp. 281–287]. The scheme solves the continuity, Navier–Stokes (N–S) and thermal energy equations numerically in Eulerian Cartesian coordinates, then derives pressure, velocity vectors and temperature for each fixed cell by considering particle existence. On the other hand, driving forces and thermal energy from fluid are applied to the particles as external body forces and a source term in the force–displacement law and the heat transfer calculations, respectively. This paper describes the thermal scheme for both fluid and particles. Results of two- and three-dimensional simulations involving forced convective heat transfer by fluid and conduction heat transfer within particles are presented.