摘要
针对新型罗茨式动力机,模拟在不同进气压力、流量的低温余热工质推动下,其旋转工作中内部流场随时间周期变化过程;结合仿真结果分析其压力场,速度场及质量流量,得出罗茨式动力机的理想运行工况及其关键参数;同时设计试验平台并进行了现场测试。试验数据与仿真结果在很大程度上的一致性说明了数值模拟低温工况可以作为研究实际流体机械的一种切实可行的手段,对于工业生产的不同余热类型配比罗茨式动力机的选型研究提供了一种新思路,为后续罗茨式动力机余热回收系统的工程实践提供了强有力的理论指导和依据。
A new roots-type power machine was recommended. As for it, the working fluid of low pressure waste heat according was simulated to both the different operating conditions and the different intake and exhaust pressure and flow, and the changing process of internal flow field over time period using dynamic mesh technique was simulated when the power machine was in rotating work. The pressure field, velocity field and mass flow rate with the simulation results were analyzed, thus reaching the optimum operating conditions and the key parameters of the roots-type power machine. A test platform and conducted field tests was designed. As a result, the large consistency of the experimental data and simulation results illustrates the fact that numerical simulation of low-temperature conditions can be a practical means to research actual fluid machinery. It provides a new thinking in selecting appropriate roots-type power machines according to different types of waste heat in industrial production. Moreover, these efforts will provide strong theoretical guidance and foundation for the subsequent engineering practice of waste heat recovery system on roots-type power machine.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2015年第12期2998-3005,共8页
Journal of System Simulation
基金
河北省自然科学基金项目(E2013202230)
关键词
工业低温余热
余热回收
罗茨式动力机
数值模拟
实验研究
industrial low-temperature waste heat
waste heat recovery
roots-type power machine
numerical simulation
experimental study
