摘要
为了更全面地掌握电厂排放烟气中小颗粒物对人体健康的影响,在广泛参考各种呼吸道物理模型的基础上,建立了一个完整的从口腔到前三级支气管的三维几何模型。采用大涡模拟(LES)的方法计算流场,并在拉格朗日框架下追踪颗粒的运动轨迹,统计了小颗粒在人体呼吸道内的沉积率。结果表明,颗粒的沉积率主要取决于呼吸强度与颗粒惯性的大小。
For more comprehensively realize effect of micro-particle from power plant flue gas on body healthiness. this paper proposed a new entire three-dimensional geometry from mouth to bronchi based on various physical models of the human respiratory tract. LES turbulence model are used to solve the flow field and the particles are traced in the Lagrangian frame, then the micro-particle deposition efficiency was obtained from numerical simulation. And the results show that the particle deposition efficiency lies on velocity of inflow and inertia of particles.
出处
《能源工程》
2005年第3期36-41,共6页
Energy Engineering
