...返回侧； 示踪粒子[gap=1657]Key words: friction stir welding；flow field；advancing side；retreating side；marker grain...
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Because the price of the hardware of the DPIV technique is very high, we develop a DPIV technique by using hydrogen bubble as trace particle.
鉴于DPIV技术硬件方面价格的昂贵，本研究开发了以氢气泡作为示踪粒子的图像测速技术。
参考来源 - 氢气泡数字粒子图像测速技术②Motion trajectories of particles obtained by numerical simulation in the two kinds of the cyclone’s inlet ducts was almost the same as the ones photographed by a high-speed camera, which proved that the tracer particles selected were appropriate.
②模拟得到的颗粒在长、短烟道内的运动轨迹和试验结果基本一致,认为试验中所选取的示踪粒子是正确的。
参考来源 - 引进300MW CFB锅炉分离器入口烟道气固流动特性的试验研究与数值模拟·2,447,543篇论文数据，部分数据来源于NoteExpress
得到了不同位置的速度分布细节以及流体示踪粒子的行为轨迹。
The velocity distribution details at different positions are obtained, along with the flow trajectories of fluid tracer particles.
利用ECOMSED模式中的示踪粒子三维追踪模块分析罗源湾的水交换情况。
This paper simulates water particles transport and the capability of seawater exchange in Luoyuan Bay using the 3-d model ECOMSED, and achieves some important conclusions.
同时，分析得出激光反光的控制和示踪粒子的均匀稳定散播是实验成功的关键因素。
At the same time, the light reflection control and the symmetrical and steady dispersion of tracer particles are the key factors of the PIV measurement.
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