Question

Consider the turbulent flow of a fluid through a circular pipe of diameter, D. Identify the correct pair of statements.

1. The fluid is well-mixed
2. The fluid is unmixed
3. Re_D < 2300
4. Re_D > 2300                                                                          

      (a) I, II                                                                (b) II, IV

      (c) II, III                                                              (d) I, IV