Sutro Weir Research
Introduction
Definition of Weir: A type of small overflow dam that can be used for flow measurement. The Linear Flow Orifice Meter is a mimic of a weir.
Definition of Sutro Weir: The dicharge (flow) through the weir is proportional to the head (water depth above a refernce plane located at one third of the depths of the crest of the base weir
Source 1: Prof. B.S. Thandaveswara from the Indian Institute of Technology Madras website
Figure 1: Sutro weir with constraining equations.
- Note: The rectangular base is present in the design merely to simplify evaluation and analysis. Flow proportional to water height begins above the rectangular weir.
Variables
W = base of rectangular weir
s = height of rectangular weir
h = wier hight above rectangular weir
c = constant of proportionality
C~d~ = coefficient of dicharge, ranges from 0.0597 to 0.619
q~w~ = Flow through rectangular weir
q~u~ = Flow through upper portion of weir, Important Parameter
Q = Total Discharge
C~0~ = Proportionality constant, average value is 0.62
g = 9.81