论文部分内容阅读
为了研究燃油脉动对燃烧室温度场的影响,分别对燃油脉动在均匀进口、径向速度畸变进口和周向速度畸变进口中进行了瞬态模拟,分析了燃油脉动在不同进口速度流场中对燃烧室温度场的影响。结果表明:燃烧室出口温度参数随燃油脉动变化呈现出相似的变化规律,但这种响应具有一定的滞后性;燃油脉动造成主燃孔区域燃烧不合理,使得主燃孔截面温度品质降低,出口径向温度分布系数FRTDF产生波动;燃油脉动和进口速度畸变不仅改变了燃烧室出口温度在径向和周向的分布,而且会使在叶尖和叶根处存在高温区,降低涡轮强度;燃油脉动在径向畸变进口中的影响程度最大。
In order to study the influence of fuel pulsation on the temperature field in the combustion chamber, the transient simulation of fuel pulsation in uniform inlet, radial velocity distortion inlet and circumferential velocity distortion inlet were carried out respectively. The influence of fuel pulsation on the velocity field of different inlet velocity Effect of combustion chamber temperature field. The results show that the outlet temperature parameter of combustion chamber shows a similar variation with the pulsation of the fuel, but this response has a certain hysteresis. The fuel pulsation causes the unreasonable combustion in the area of the main combustion hole, Radial temperature distribution coefficient FRTDF fluctuations; fuel pulsation and inlet velocity distortion not only changes the radial and circumferential distribution of the combustion chamber outlet temperature, but also in the tip and the root of the high temperature zone exists to reduce the turbine strength; fuel The effect of pulsations on radial distortion imports is greatest.