中文摘要：

到在圆喷气的骚乱的粒子调整试验性地与阶段 Doppler 风速表(PDA ) 借助于二阶段的速度大小被学习。有很大的粒子的拉登，骚乱紧张的重要变细都没被测量在远地，由于小二阶段滑动速度和粒子雷纳兹数字。煤气阶段的骚乱被粒子提高在近地，但是它被小粒子显著地稀释在远地。更小的粒子在骚乱紧张的变细上有更深刻的效果。骚乱紧张在的改进或变细远地取决于在二个阶段之间的精力生产，运输和驱散机制，它由粒子性质和二阶段的速度是坚定的滑倒。非维的参数 CTI 被介绍代表骚乱紧张的变化。

英文摘要：

The particle modulations to turbulence in round jets were experimentally studied by means of two-phase velocity measurements with Phase Doppler Anemometer （PDA）. Laden with very large particles, no significant attenuations of turbulence intensities were measured in the farfields, due to small two-phase slip velocities and particle Reynolds number. The gas-phase turbulence is enhanced by particles in the near-fields, but it is significantly attenuated by the small particles in the far-fields. The smaller particles have a more profound effect on the attenuation of turbulence intensities. The enhancements or attenuations of turbulence intensities in the far-fields depends on the energy production, transport and dissipation mechanisms between the two phases, which are determined by the particle prop- erties and two-phase velocity slips. The non-dimensional parameter CTI is introduced to represent the change of turbulence intensity.