中文摘要：

在一条水平隧道的粒子沉重的流动借助于二阶段的粒子图象 velocimetry (PIV ) 被调查技术。实验在一个雷纳兹数字被执行 6 826 并且流动与二种尺寸， 60 μm 和 110 μm 的聚乙烯祷告被播种。一个人比稍微小，其它比 Kolmogorov 长度规模大。粒子装载是相对低的，与装载比率从 5 × 1 的质量 0 ⁻⁴ 到 4 × 1 从 6 × 1 的 0 ⁻² 和体积部分 0 ⁻⁷ 到 4.8 × 1 0 ⁻⁵, 分别地。结果证明粒子的存在能戏剧性地甚至在 5 × 1 的最低集体装载比率下面修改骚乱 0 ⁻⁴ 。吝啬的流动与增加粒子尺寸并且集体装载被稀释并且减少。骚乱紧张在担心的所有案例中被提高。随集体装载的增加，紧张在小粒子的情况中以一种复杂方式变化，显示复杂粒子骚乱相互作用；而他们在大粒子的情况中单调地增加。粒子速度和集中也被给。粒子在中心区域落后于液体，但是领进墙区域，和这个趋势为大粒子是更突出的。溪流明智的粒子变化比为粒子的两种尺寸的煤气的变化大，然而，他们有集体装载的变化趋势不是那么清楚的。墙正常变化与增加集体装载增加。他们在 60 μm 粒子盒子中是更小的但是在 110 μm 粒子盒子中更大比那些煤气的阶段。当更大的粒子被他们的自己的惯性更多半统治时，看起来，小粒子跟随液体运动到某些程度。最后，粒子集中的显著不一致的分布被观察，特别为大粒子。粒子的惯性被证明为骚乱修正和粒子行为很重要并且应该因此在水平隧道被考虑。

英文摘要：

Particle-laden flows in a horizontal channel were investigated by means of a two-phase particle image velocimetry （PIV） technique. Experiments were performed at a Reynolds number of 6826 and the flow is seeded with polythene beads of two sizes, 60μm and 110μm. One was slightly smaller than and the other was larger than the Kolmogorov length scale. The particle loadings were relatively low, with mass loading ratio ranging from 5 ×10^-4 to 4 × 10^-2 and volume fractions from 6×10×-7 to 4.8×10^-5, respectively. The results show that the presence of particles can dramatically modify the turbulence even under the lowest mass loading ratio of 5 × 10^-4. The mean flow is attenuated and de- creased with increasing particle size and mass loading. The turbulence intensities are enhanced in all the cases concerned. With the increase of the mass loading, the intensities vary in a complicated manner in the case of small particles, indicating complicated particle-turbulence interactions; whereas they increase monotonously in the case of large particles. The particle velocities and concentrations are also given. The particles lag behind the fluid in the center region but lead in the wall region, and this trend is more prominent for the large particles. The streamwise particle fluctuations are larger than the gas fluctuations for both sizes of particles, however their varying trend with the mass loadings is not so clear. The wallnormal fluctuations increase with increasing mass loadings. They are smaller in the 60μm particle case but larger in the 110μm particle case than those of the gas phase. It seems that the small particles follow the fluid motion to certain extent while the larger particles are more likely dominated by their own inertia. Finally, remarkable non-uniform distributions of particle concentration are observed, especially for the large particles. The inertia of particles is proved to be very important for the turbulence modification and particles behaviors and thus should be considered in horizonta