帮忙翻译一下啊! 谢了! 机械的哦.The PIV technique using DC light source wasused to study the time-dependent velocity field. Thebasic principle is that light scattered from the particlesthat move within the flow, enable conclusionsto be d

帮忙翻译一下啊! 谢了! 机械的哦.The PIV technique using DC light source wasused to study the time-dependent velocity field. Thebasic principle is that light scattered from the particlesthat move within the flow, enable conclusionsto be d
帮忙翻译一下啊! 谢了! 机械的哦.
The PIV technique using DC light source was
used to study the time-dependent velocity field. The
basic principle is that light scattered from the particles
that move within the flow, enable conclusions
to be drawn regarding the surface and the velocity of
the flow. It is based on the imaging, tracking, and
recording of the patterns of small particles that are
added to the flow, move together with the flow, and
thereby retain their individuality. The particles are
illuminated inside a thin section of DC light (in this
investigation, it is the central vertical plane of the
model). The particles are observed perpendicularly
to the light sheet plane. The particles present within
this plane reflected the light and contrasted
sharply against the image background. The particles
outside this plane are not illuminated, and
therefore, do not appear in the image section. The
technique used in this study determines the velocities
in the illuminated plane of the flow by analyzing
the frame-to-frame movement of the tracer particles
in the video recordings. The tracer particles have
almost neutral density, so that their rising/settling
velocity in the fluid is negligible and they are carried
along by the flow. The movement of the particles
is recorded using a Dalsa digital camera, and the
tracker and the sector are analyzed using the PIV
software. Moreover, a solidified shell was used to
simulate the liquid-solid interface condition. The
simulated solidified shell is made using natural
sponges and has a structure similar to the dendrite
of steel, as shown in Fig. 2.

帮忙翻译一下啊! 谢了! 机械的哦.The PIV technique using DC light source wasused to study the time-dependent velocity field. Thebasic principle is that light scattered from the particlesthat move within the flow, enable conclusionsto be d
该PIV技术使用直流光源是
用于研究的时间依赖速度场.那个
基本原则是,轻分散,从粒子
这一举动内部流动,使结论
可以得出的关于地表水和速度
水流.它是基于成像,跟踪和
记录的模式,小颗粒是
添加到流,提出一起流动,并
从而保留自己的个性.粒子
会发亮的内薄切片的直流轻（在这
调查,这是中央的垂直平面的
模型） .粒子垂直观察
要根据资产负债表的飞机.粒子目前的内部
这架飞机,反映了轻型和对比
急剧对图像背景.粒子
这架飞机以外没有照明,
因此,没有出现在形象节.那个
所使用的技术在这方面的研究,决定速度
在该会发亮的飞机流量分析
帧到帧运动的示踪粒子
在该录影.示踪粒子
几乎中性密度,使他们上升/解决
速度在流体是微不足道的和他们进行
沿由流动.运动的粒子
记录使用dalsa数码相机,和
盈富和部门的分析使用的PIV
软件.此外,凝固坯壳被用来
模拟液-固界面条件.那个
模拟凝固壳是用天然
海绵和有一个结构类似枝晶
钢材,显示在图.2 .