利用粒子图像速度场测量(PIV)技术对不同燃空速度比下的钝体回流扩散燃烧流场进行了测量,考察不同火焰的湍流结构特性.结果表明,流场中轴向脉动速度沿钝体中心轴线成对称分布,轴向脉动速度最大值出现在钝体中心轴线处,流场切向雷诺应力以饨体轴线呈中心对称,在中心轴线处切向雷诺应力值为0,随燃空速度比的增大,轴向脉动速度和切向雷诺应力不断增大,随着与钝体表面的距离增加,流场截面上最大轴向脉动速度不断减小,最大切向雷诺应力先增大,后减小.
参考文献
| [1] | Adrian R J .Statistical Properties of Particle Image Velocimetry Measurements in Turbulent Flow[J].Laser Anemometry In Fluid Mechanics,1988,4(03):115-129. |
| [2] | Adrian R J .Dynamic Ranges of Velocity and Spatial Ranges of Particle Image Velocimetry[J].Measurement Science and Technology,1997,8(12):1393-1398. |
| [3] | shuya Yoshioka;Shinnosuke Obi;shigeaki Masuda .Turbulence statistics of periodically perturbed separated flow over backward-facing step[J].International journal of heat and fluid flow,2001(4):393-401. |
| [4] | M. Braza;R. Perrin;Y. Hoarau .Turbulence properties in the cylinder wake at high Reynolds numbers[J].Journal of Fluids and Structures,2006(6/7):757-771. |
| [5] | Shinnosuke Obi;Norihiko Tokai .The pressure-velocity correlation in oscillatory turbulent flow between a pair of bluff bodies[J].International journal of heat and fluid flow,2006(5):768-776. |
| [6] | Perrin R;Braza M;Cid E;Cazin S;Moradei F;Barthet A;Sevrain A;Hoarau Y .Near-wake turbulence properties in the high Reynolds number incompressible flow around a circular cylinder measured by two- and three-component PIV[J].Flow, turbulence and combustion,2006(1/4):185-204. |
| [7] | Gebing;Zang S S;Gu Xin .Experimental Study on Velocity Characteristic Distribution in Non-Premixed CircularDisc Stabilized Flames[ASME GT2007-27098][R].,2007. |
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