电视台网络化制播系统模拟运行环境应用实例分析

本文以电视台网络化制播系统建设为背景,结合北京新电视中心项目实践,详细阐述和说明了保证全台网络化制播体系实施效果的重要途径和手段——模拟运行环境的建设需求和应用实例,并对该环境的建设经验和应用前景进行了汇总和分析。

Estimating the Operation Status of Steam Cracking Furnace Using Numerical Simulation with Combustion Models

An accurate and complete geometric model was constructed to simulate the combustion, flow and temperature environment in the radiant section of the steam cracking furnace. Simulation of flow and radiation status has utilized the standard k-ε model and P1 model. The finite-rate/eddy-dissipation (finite-rate/ED) combustion model and non-premixed combustion model were both used to simulate accurately the combustion and the operation status of the steam cracking furnace. Three different surfaces of the steam cracking furnace were obtained from the simulation, namely:the flue gas temperature field of the entrance surface in long flame burners, the central surface location of tubes, and the crossover section surface. Detailed information on the flue gas temperature and the mass concentration fraction of these different surfaces in the steam cracking furnace can also be obtained by the simulation. This paper analyzed and compared the simulation results with the two combustion models, estimated the operation status of the steam cracking furnace, and reported that the finite-rate/ED model is appropriate to simulate the steam cracking furnace by comparing key simulation data with actual test data. This work has also provided a theoretical basis for simulating and operating the steam cracking furnace.

网络协议自身缺陷智能检测系统设计

为有效且快速地检测出网络协议中的风险性因子,设计基于网络协议自身缺陷的智能检测系统。通过总体框架设计、检测电源设计、可编程缺陷控制器设计三个步骤,完成网络协议自身缺陷智能检测系统硬件设计。通过Z-Stack网络通信协议设计、自身缺陷检测节点程序设计、智能检测流程设计三个步骤,完成网络协议自身缺陷智能检测系统软件设计。模拟系统运行环境,设计对比实验。实验结果表明,应用网络协议自身缺陷智能检测系统后,网络协议中风险性因子检测速度、检测有效性等属性都得到大幅度提升。