基于旋流分离器结构的冷壁燃烧室流动特性仿真

发布时间：2018-03-29 22:26

  本文选题：旋流分离器　切入点：数值模拟　出处：《弹箭与制导学报》2016年02期

【摘要】：旋流分离器产生的内外双层旋流具有稳定火焰以及冷却壁面的潜能,为此文中应用雷诺应力模型(RSM)对某种结构的旋流冷壁燃烧室的流动特性进行了数值仿真。结果表明:旋流冷壁燃烧室能够实现内外双层旋流流动,具有较好的壁面冷却效果。冷热态条件下,总压损失系数为0.9%和1%,表现出低阻特性;内外旋流分界面平均约占半径的70%。燃烧区域分界随燃料喷入速度的增大而增大,燃料喷射速度为12 m/s时,燃烧区域最大,平均约占半径的56%。
[Abstract]:The internal and external double-layer swirl produced by the cyclone separator has the potential to stabilize the flame and cool the wall. In this paper, the Reynolds stress model (RSM) is used to simulate the flow characteristics of the swirl wall combustor with a certain structure. The results show that the swirl cold wall combustor can realize the internal and external two-layer swirl flow. Under the cold and hot conditions, the total pressure loss coefficient is 0.9% and 1%, showing a low resistance characteristic, and the internal and external swirl separation interface accounts for about 70 of the radius on the average. The combustion zone boundary increases with the increase of fuel injection velocity. When the fuel injection velocity is 12 m / s, the combustion region is the largest, accounting for about 56% of the radius on average.
【作者单位】： 南昌航空大学飞行器工程学院;上海电力学院能源与机械工程学院;
【基金】：国家自然科学基金(51066006;51266013) 航空科学基金(2013ZB56002;2013ZB56004)资助
【分类号】：V231.2
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本文编号：1683150