Numerical Methods

Concept: Reynolds number ( ) is used to determine the type of flow in a pipe.
Step 1: Definition of Reynolds number.

Step 2: Flow regimes.

• Laminar flow:
• Transitional flow:
• Turbulent flow:

Step 3: Evaluating the options.

• 500 Too low (incorrect)
• 1000 Possible but not standard limit (incorrect)
• 2000 Standard upper limit for laminar flow (correct)
• 4000 Turbulent range (incorrect)

Step 4: Conclusion.
Thus, laminar flow occurs when Reynolds number is less than 2000.