旋流燃烧室内湍流流动的PIV实验研究

建立了微型燃气轮机旋流燃烧室实验台．采用二维粒子图像测速技术(PIV)测量了旋流燃烧室火焰筒内冷态速度场．旋流燃烧室主要由3个旋流器和1个侧壁开有测试视窗的圆筒段组成．在空气流量为0．114m^3／s的工况下，得到了燃烧室火焰筒内气体时均切向速度分布及旋流燃烧室火焰筒中心截面和不同轴向横截面位置的速度矢量分布图．实验结果及其分析为旋流燃烧室的数值模拟计算和进一步的实验研究提供了基础．

Experimental study on the turbulent flow in a swirl combustion chamber by using particle image velocimetry

An experimental system for the micro-gas turbine swirl combustion chamber is established.The velocity field inside the combustor liner is measured with two-dimensional particle image velocimetry.The model combustion chamber consists mainly of three swirlers and a cylindrical shell with a side-window for PIV image capture.Velocity-vector diagrams and time-averaged swirl velocity profiles at the central longitudinal section and different cross sections of the combustion chamber at a total air-stream flow 0.114 m~3/s are obtained and analyzed,which is of importance to the numerical simulation and further experimental studies of the swirl combustion chamber.