In case of liquid flowing on horizontal surface the flow of liquid becomes unsteady, when Reynolds number R n is

Question

In case of liquid flowing on horizontal surface the flow of liquid becomes unsteady, when Reynolds number R n ​ is

TestHub · Accepted Answer

According to the standard conventions for fluid flow:

If the Reynolds number $R_{n} < 1000$ , the flow of the liquid is streamline or laminar.

If the Reynolds number $R_{n} > 2000$ , the flow of the liquid is turbulent.

If the Reynolds number lies in the range $1000 < R_{n} < 2000$ , the flow of the liquid becomes unsteady (transitional state).

Therefore, the flow becomes unsteady when the Reynolds number is between $1000$ to $2000$ .

Answer: between $1000$ to $2000$

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