ISRO Mechanical & Aerospace 2009 - Question 11

All ISRO Mechanical & Aerospace papers | ISRO Mechanical & Aerospace 2009

The transition Reynolds number for flow over a flat plate is $5 \times 10^5$. What is the distance from the leading edge at which transition will occur for flow of water with a uniform velocity of 1 m/s? (For water, the kinematic viscosity, $\nu = 0.86 \times 10^{-6} m²/s$)

  • A. 0.43m
  • B. 1m
  • C. 43m
  • D. 103m

Answer: A. 0.43m

Explanation: $Re = \frac{Vx}{\nu}$. $x = \frac{5 \times 10^5 \times 0.86 \times 10^{-6}}{1} = 0.43$ m.

| | All questions of ISRO Mechanical & Aerospace 2009