摘要
文章建立了适用于燃气轮机的连续弧等离子点火发生器稳定电弧的有限元数学模型,采用多物理场耦合的计算方式对等离子弧的温度场、电磁场、速度场以及电极表面的电流密度进行了数值模拟。按照数值模拟结果修改了等离子点火发生器喷嘴结构设计。通过试验,可实现小电流激发空气等离子体并获得稳定的等离子射流火焰,满足燃气轮机可靠点火的要求。
The mathematical models of multi - physics fields for marine gas turbine continuous are plasma generator are established. Numerical analysis for the temperature field, electromagnetic field, velocity field and current density of plasma arc by multi - physical coupling calculation are introduced. The nozzle structure of plasma ignition generator is regulated according to the calculation, which can generate the plasma are and plasma jet flame in small current, comply with the requirement of marine gas turbine reliable ignition confirm by experiment.
出处
《燃气轮机技术》
2010年第2期34-38,共5页
Gas Turbine Technology
关键词
等离子点火
多物理场耦合
数值模拟
plasma ignition generator
multi -physical coupling calculation
numerical simulation
