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中文摘要：
本文运用粒子图像速度场测量仪(PIV)对水平槽道气固两相湍流边界层进行研究。实验雷诺数为Re_γ=444,选用两种粒径分别为60μm和110μm的聚乙烯颗粒作为固相,质量载荷控制在1×10~(-3)。实验结果表明即便在较低载荷下,固相颗粒的存在仍然能比较明显地改变边界层的湍流属性以及拟序结构,而且可以发现在近壁面颗粒会削弱流向的湍流强度以及雷诺剪切应力。
英文摘要：
Turbulent modulation in the turbulent boundary layer of a horizontal particle-laden chan- nel flow was experimentally investigated using particle image velocimetry(PIV).Experiments were performed at Re_γ=444.The polythene beads of two sizes with 60μm and 110μm in diameter were used as dispersed phase,and the mass loading was 1×10~(-3).The experimental results show that the turbulent properties and coherent structures can be significantly modulated by dispersed phase even for a very low mass loading,and the ...
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