摘要
风场预报和烟羽浓度预测是核事故早期应急响应放射性后果评价系统的主要内容。基于将风场预报和烟羽浓度预测作为一个系统的考虑 ,介绍用于核事故早期应急响应的预报模式和设计方案。风场预报 ,以质量守恒的风场诊断模式提供的三维风场为初始场 ,采用非静力平衡、完全可压缩的大气动力学模式。烟羽浓度预测 ,采用粒子随机游走大气扩散模式 ,该模式所依赖的平均风速和湍流脉动参数均来自非静力平衡。
Wind fields forecasting and plume concentration predicting are main content of radioactive consequence assessment for early emergency to nuclear accidents. The forecast model and its design for early emergency response to nuclear accidents are introduced, based on considering wind fields forecast and plume concentration prediction as one system. The wind field prognostication is on the basis of a non-hydrostatic equilibrium, full compressible dynamics model, in which the initial wind field is provided by diagnostic wind field model. The plume concentration prediction is on the basis of a particle random walking model, in which the average wind speed and the parameters of turbulent fluctuation are derived from the non-hydrostatic equilibrium, full compressible dynamics model.
出处
《辐射防护》
CAS
CSCD
北大核心
2005年第1期1-10,共10页
Radiation Protection
