The instantaneous stream wise velocity of a turbulent flow is given as

1.	The instantaneous stream wise velocity of a turbulent flow is given as follows: u(x, y, z, t) =
A.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center>u'</center></td><td rowspan="2"></td></tr><td align="center">2</td></table>
B.
C.	<table><tr><td rowspan="2">-</td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center><span style=" text-decoration: overline;">u</span></center></td><td rowspan="2"></td></tr><td align="center">2</td></table>
D.	zero
E.	<table><tr><td rowspan="2"></td><td style="border-bottom:1px solid #000000;vertical-align:bottom;padding-bottom:2px;"><center><span style=" text-decoration: overline;">u</span></center></td><td rowspan="2"></td></tr><td align="center">2</td></table>
Answer» D. zero

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The instantaneous stream wise velocity of a turbulent flow is given as follows: u(x, y, z, t) =

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