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首页> 外文期刊>日本機械学会論文集. B編 >Measurements of Three Dimentional Flow of an Engine using Flow Visualization adopted Color Layers (2nd Report, Improvement of Measuring System, Examination of Velocity Measurement and Application to Simulated Engine Model)
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Measurements of Three Dimentional Flow of an Engine using Flow Visualization adopted Color Layers (2nd Report, Improvement of Measuring System, Examination of Velocity Measurement and Application to Simulated Engine Model)

机译：利用流动可视化技术对发动机的三维流动进行测量，采用了颜色层（第二次报告，测量系统的改进，速度测量的检验以及在模拟发动机模型中的应用）

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摘要

In-Cylinder gas flow is one of the most important factors that affect to the combustibility of pre -mixture in the cylinder and heat transfer to the cylinder walls of an engine. Many papers have been published about gas flow measrement in an engine and flow visualization method is one of the effective means. In our previous report, a method of three dimentional measurement, that is called "color layer method", was introduced that the depth information perpendicular to the image plane is represented by color of tracer. In this paper, improvements of measurering system, mainly about the optical systems, were made and examined measuring accuracy. Flow velocity in a tube of laminar flow and that of unsteady flow with vortex were measured and they were compared with theoretical value and measured value by LDV respectively. Furthermore, flow in a model engine was measured. As a result, it is confirmed that the system was improved in accuracy and was able to adopted to unsteady flow measurement.
机译：缸内气流是影响气缸中预混物的可燃性和热传递到发动机气缸壁的最重要因素之一。关于发动机中的气体流量测量的许多论文已经发表，并且流量可视化方法是有效的手段之一。在我们以前的报告中，介绍了一种三维测量方法，即“色层法”，该方法以垂直于像平面的深度信息由示踪剂的颜色表示。本文对测量系统进行了改进，主要是关于光学系统，并检验了测量精度。测量了层流管中的流动速度和带涡流的非定常流动中的流速，并将其分别与理论值和LDV测量值进行了比较。此外，测量了模型引擎中的流量。结果，确认了该系统的精度提高并且能够用于不稳定流量测量。

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