15 船尾限界流線の画像計測

抄録

In order to observe the limiting streamline on ship hull surface, the so-called oil film method has been applied by many people. This method always gives clear line on the body surface. In the experiment in circulating water channel, however, a number of small air bubles attached on the hull affect the limiting streamline. This causes misunderstanding of the physical phenomena.
This paper discribes a new method for obtaining the limiting streamline on hull surface using image measurement technique, spatio-temporal method, to the oil film on the wall surface. This method also enables to measure the wall friction distribution.