What will be the flow, if we take mercury in a pipe, when mercury comes out from the pipe( which is used to flow water) then wiill the flow be streamline or turbulent.

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Solution

Dear student
the flow is streamline or turbulence is decided by factor called Reynolds number Re
$R_{e} = \frac{ρ v D}{η} (w h e r e ρ i s d e n s i t y o f l i q u i d, v i s s p e e d, D i s d i a m e t e r a n d η i s c o f f i c i e n t o f v i s \cos i t y) . . . . 1 > i f R_{e} > 2000 t h e n f l o w b e c o m e s t u r b u l e n t i f R_{e} < 1000 h e n f l o w i s s t r e a m l i n e a n d i s 1000 < R_{e} < 2000 h e n f l o w i s u n s t e a d y, i t m a y c h a n g e f r o m s t r a m l i n e t o t u r b u l e n t a n d v i c e v e r s a b u t f r o m e q 1 a s m e r c u r y i s m o r e d e n s e h e n c e i t s i s m o r e s o i t m a y b e t u r b u l e n t$

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