防排烟系统中暖通消防烟气控制的CFD模拟

CFD simulation for HVAC fire smoke control in smoke prevention system

针对当前方法模拟暖通消防烟气控制效果差的问题,提出防排烟系统中暖通消防烟气控制的CFD模拟方法.通过基本守恒方程分析防排烟系统中烟气及温度场分布特征,建立烟气扩散模拟的数学模型,并采用CFD技术对其进行求解获取模拟结果,结合能量质量守恒定律,通过该模拟结果构建暖通消防烟气控制模型,根据该模型实现暖通消防烟气的优化控制.结果表明,所提方法提高了防排烟系统中暖通消防烟气的控制效果,模拟效果较为理想.

Aiming at the problem of poor control effect of current methods for simulating HVAC fire smoke,a CFD simulation method for heating,ventilation and air conditioning(HVAC)fire smoke control in the smoke prevention system was proposed.The distribution characteristics of smoke and temperature field in the smoke prevention system were analyzed through the basic conservation equation,and a mathematical model for smoke diffusion simulation was established and solved with CFD technique to obtain the simulation results.In combination with the energy and mass conservation law and by using the simulation results,a control model for HVAC fire smoke was constructed,and the optimal control of HVAC fire smoke was realized according to the as-proposed model.The results show that the as-proposed method improves the control effect of HVAC fire smoke in the smoke prevention system,and the simulation results is quite ideal.