1. What is Orifice Beta Ratio?

The orifice beta ratio (β) is a dimensionless parameter used in fluid mechanics to describe the relationship between the orifice diameter and the pipe diameter. It is a critical parameter in flow measurement applications using orifice plates.

2. How Does the Calculator Work?

The calculator uses the beta ratio equation:

Where:

• \( d \) — Orifice diameter (m)
• \( D \) — Pipe diameter (m)

Explanation: The beta ratio represents the ratio of the orifice diameter to the pipe diameter, which affects the flow characteristics and pressure drop across the orifice.

3. Importance of Beta Ratio Calculation

Details: Accurate beta ratio calculation is essential for proper orifice plate design, flow measurement accuracy, and predicting pressure drop in piping systems.

4. Using the Calculator

Tips: Enter both orifice diameter and pipe diameter in meters. Both values must be valid positive numbers, and orifice diameter cannot exceed pipe diameter.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for beta ratio?
A: Beta ratio typically ranges from 0.2 to 0.75 for most practical applications in flow measurement.

Q2: Why is beta ratio important in flow measurement?
A: Beta ratio affects the discharge coefficient, flow rate calculation, and pressure recovery characteristics of orifice plates.

Q3: What units should be used for diameter measurements?
A: While meters are used in this calculator, consistent units must be maintained (both diameters in same units).

Q4: Can beta ratio be greater than 1?
A: No, beta ratio cannot exceed 1 since orifice diameter cannot be larger than pipe diameter.

Q5: How does beta ratio affect pressure drop?
A: Higher beta ratios generally result in lower permanent pressure losses across the orifice plate.