Match the following : P: Compressible flow, Q: Free surface flow, R: Boundary layer flow, S: Pipe flow, T: Heat convection. U: Reynolds number, V: Nusselt number, W: Weber number, X: Froude number, Y: Mach number, Z: Skin friction coefficient
- A. P-Q; Q-X; R-V; S-Z; T-W
- B. P-W; Q-X; R-Z; S-U; T-V
- C. P-Y; Q-W; R-Z; S-U; T-X
- D. P-Y; Q-W; R-Z; S-U; T-V
Answer: D. P-Y; Q-W; R-Z; S-U; T-V
Explanation: Compressible -> Mach (Y); Free Surface -> Weber (W) (or Froude? Froude is more common for free surface, Weber for surface tension); Pipe -> Reynolds (U); Heat Conv -> Nusselt (V); Boundary Layer -> Skin Friction (Z). Wait, Froude is X. Option (d) has Q-W. Let's check. Is Q Free Surface -> Froude(X) or Weber(W)? Usually Froude. But P-Y (Compressible-Mach) is correct. T-V (Heat-Nusselt) is correct. R-Z (BL-Skin Friction) is correct. S-U (Pipe-Reynolds) is correct. So Q-W? Weber number is surface tension. If free surface dominated by surface tension. Let's assume d.