非量测用135摄影机在矩形孔口射流水舌测量中的应用

Application of Non-Metrical Camera to Measurement of Nappe Profiles of a Jet through a Rectangular Orifice

本文考虑到应用摄影测量方法于高速水流测量中的各种优越性,从一般水力实验室的实际情况出发,采用一台非量测用摄影机,对通过一个矩形孔口射出的水流水舌轮廓进行了测量。其结果证明用此方法即可得到较好的结果,又可弥补过去所采用接触测量方法的许多不足。是一种值得进一步在水流测量领域研究并推广的方法。

A method of applying photogrammetry to the measurement of the profiles of a jet through a rectangular orifice is introduced in this paper. A special technique of photography which suits the condition of an ordinary hydraulic laboratory is adopted. The photographs obtained with the special method are treated so that satisfactory results can be obtained with photogrammetry.An example is presented in this paper to show the practicability of the method. The results obtained with the method are compared with those obtained with measuring needles to prove that the method is pursuable.