期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：12
页码：20612
DOI：10.15680/IJIRSET.2016.0512084
出版社：S&S Publications
摘要：This paper presents the experimental studies on Bluff bodies. In the present study a blunt nosed bodywith and without spike having the L/W =1 and 1.5 , where W is the width of the model and L is the length of the spikeare chosen. The zone of influence and the positive pressure field over the nose for a blunt-nosed body, with and withoutspike were measured by direct means. Flow past the body, with and without spikes was visualized in a two dimensionalwater channel at a Reynolds number 6620. It is found that the spike reduces the radius of curvature of the approachingstreamline, and the deflection of the streamline is towards the shoulder of the basic body resulting in a narrow zone ofpositive pressure hill at the nose. The spike with hemispherical nose reduces the zone of influence.
