STUDY AND ASPECTS OF HYDRAULIC WEIR

An experimental investigation of a flow of water with a weir of shape trapezoidal and rectangular weir with and without baffle an experiment is conducted. It can be determined with variation in pressure gauge. And this gives the co efficient of discharge (Cd) with weir is maximum. Sharp crested weirs are widely used as discharge measuring device in laboratories, industries and irrigation channels. From many years sharp crested rectangular and trapezoidal weirs has been investigated by many researchers. The common objective of these studies was to investigate the flow behavior of the weirs and obtain the discharge coefficient. Analysis of water surface profile and measurement of head over the weir crest are the important aspects in discharge analysis through sharp crested weirs. Width of the weir opening and the weir height affect the coefficient of discharge and thereby the discharge also. In the present paper the works carried out in this field. Flow measurement in any open channel flow is a vital aspect of its design and levy charged by the users. Sharp crested weir is a simple device for estimation of discharge in all shapes of channels. Till now it has always taken an attention by various researchers and a number of works have been carried out in this field. During the literature review, it was found that a lot of work has been carried out till date on various shapes of sharp crested weirs like rectangular and trapezoidal weir. Analysis of water surface profile and measurement of head over the weir crest are the important aspects in discharge analysis through sharp crested weirs.