Momentum equation - nptel - Indian Institute of Technology Madras
Momentum equation - nptel - Indian Institute of Technology Madras
Momentum equation - nptel - Indian Institute of Technology Madras
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Hydraulics Pr<strong>of</strong>. B.S. Thandaveswara<br />
Sarma and Newnham 1975 introducing the momentum coefficient ( j 1.045 β = ) for the<br />
<strong>Indian</strong> <strong>Institute</strong> <strong>of</strong> <strong>Technology</strong> <strong>Madras</strong><br />
non uniform velocity distribution obtained the following modified momentum <strong>equation</strong><br />
y2 1 ⎡ ⎤<br />
=<br />
⎢<br />
1 + 10.4 F<br />
2<br />
−1<br />
y ⎣<br />
1 ⎥<br />
1 2<br />
⎦<br />
(28.3)<br />
In Eqn. 28.3, a value <strong>of</strong> β j was used by them based on the assumption <strong>of</strong> a similarity<br />
pr<strong>of</strong>ile for the velocity distribution. Eq. 28.3 gives a higher value for the sequent depth<br />
ratio, compared to the value computed from Eq.28.1. Their analysis was carried out<br />
upto a Froude number value <strong>of</strong> 4.
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