1. What is Agitator Tip Speed?

Agitator tip speed refers to the peripheral speed at the outermost edge of an agitator blade. It represents the linear velocity of the blade tip as it rotates through the fluid, measured in meters per second (m/s).

2. How Does the Calculator Work?

The calculator uses the tip speed formula:

Where:

• \( \pi \) — Mathematical constant (3.1416)
• \( D \) — Diameter of agitator (m)
• \( N \) — Rotational speed (revolutions per second)

Explanation: The formula calculates the linear velocity at the blade tip by multiplying the circumference of the agitator's rotation by the rotational speed.

3. Importance of Tip Speed Calculation

Details: Tip speed is critical for determining mixing efficiency, shear rates, power consumption, and potential for particle degradation in mixing applications across various industries.

4. Using the Calculator

Tips: Enter agitator diameter in meters and rotational speed in revolutions per second (rps). Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for agitator tip speeds?
A: Typical tip speeds range from 1-10 m/s depending on the application, with lower speeds for gentle mixing and higher speeds for high-shear applications.

Q2: How does tip speed affect mixing performance?
A: Higher tip speeds generally increase mixing intensity and shear rates, but may also increase power consumption and potential for product degradation.

Q3: Can I use rpm instead of rps?
A: Yes, but you'll need to convert rpm to rps by dividing by 60 (rps = rpm ÷ 60) before using the calculator.

Q4: What factors influence optimal tip speed selection?
A: Fluid viscosity, mixing objectives, impeller type, vessel geometry, and sensitivity of materials to shear all influence optimal tip speed selection.

Q5: Is tip speed the same for all points on the agitator?
A: No, tip speed is maximum at the blade tip and decreases toward the center of rotation, following a linear relationship with radius.