基于CFD模拟的燃气灶燃烧器结构设计研究

Research on Structure Design of Gas Stove Burner Based on CFD Simulation

用燃气灶燃烧器的传统实验研发方式存在着周期长、成本高等缺点。数值模拟方法的兴起和发展,为燃气灶具的设计和优化提供了便利,能够有效地缩短工程周期、节约成本。本论文以大气式燃气灶燃烧器作为研究对象,建立三维物理模型,采用Realizablek-e湍流模型、DO辐射模型及涡耗散燃烧模型,进行燃气灶数值模拟分析,通过从燃气灶速度场、烟气浓度场、温度场等方面分析了燃烧器的性能,得出在锅底增加隔热分流挡片能够成功地降低锅底中心区域温度40℃。

The traditional experimental research and development methods of domestic gas stove burners have shortcomings such as long cycle and high cost.The rise and development of numerical simulation methods have facilitated the design and optimization of gas stoves,which can effectively shorten the engineering cycle and save costs.In this thesis,the atmospheric gas stove burner is taken as the research object,and the three-dimensional physical model is established.The Realizable k-e turbulence model,the DO radiation model and the eddy-dissipative combustion model are used to simulate the gas stove numerical simulation.The performance of the burner was analyzed in the speed field,the concentration field of flue gas terms and temperature field from the gas stove.It was found that the addition of the heat-insulating shunt at the bottom of the pot can successfully reduce the temperature of the center of the pot at 40°C.