摘要
跷跷板效应使管式换热器动态数学模型的流体出口温度动态扰动曲线出现错误,与实际设备的变化趋势相反。从流体出口温度计算公式和建模过程中的简化假设两个方面进行分析,指出跷跷板效应的产生原因,给出避免跷跷板效应的判定条件,并指明其物理含义。计算机仿真计算实例表明该结论是正确的。此方法可用于管式换热器的动态实时仿真计算中。
Seesaw effect leads to the false dynamic trend for tubular exchanger real-time model. Compared with the character of real exchanger device, the dynamic curve of fluid outlet temperature is reverse when the inlet temperature of fluid changes in step. The computing formula of fluid outlet temperature and modeling hypothesis were analyzed to point out the cause of seesaw effect, and then the criterion to avoid it was given. The simulation test shows that the conclusion is correct. This method can be applied in real-time model of tubular exchanger.
出处
《系统仿真学报》
EI
CAS
CSCD
北大核心
2006年第5期1105-1107,共3页
Journal of System Simulation
