Question

Streamline flow is more likely for liquida with

• A. low viscosity
• B. high density
• C. high viscosity
• D. low density

Answer 1

Answer: (C), (D)

low density

As the Reynold's number is given by

$R=\frac{\rho .V.D}{\mu }$

where $\rho$ is the density of the fluid, $\mu$ is the viscosity of the fluid and the $D$ is the characteristic dimension.

For streamline flow, Reynolds's number should be less for the fluid, therefore

$R\downarrow =\frac{\rho \downarrow }{\mu \uparrow }$

Final Answer$:\left(B\right),\left(C\right)$