1. What is the Wind Pressure Formula?

Definition: This formula calculates the dynamic pressure exerted by wind based on air density and wind speed.

Purpose: It's essential for structural engineering, wind turbine design, and building code calculations.

2. How Does the Formula Work?

The formula is:

Where:

• \( P \) — Wind pressure (Pascals)
• \( \rho \) — Air density (kg/m³)
• \( v \) — Wind speed (m/s)

Explanation: The kinetic energy of moving air is converted to pressure, with the square of velocity showing its significant impact.

3. Importance of Wind Pressure Calculation

Details: Accurate wind pressure calculations are crucial for structural integrity, safety standards, and efficient wind energy systems.

4. Using the Calculator

Tips: Enter air density (default 1.225 kg/m³ at sea level) and wind speed in m/s. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What's the standard air density value?
A: At sea level and 15°C, it's approximately 1.225 kg/m³. Decreases with altitude and increases with humidity.

Q2: How does wind speed affect pressure?
A: Pressure increases with the square of wind speed - doubling speed quadruples pressure.

Q3: When would I need to adjust air density?
A: For high-altitude locations, extreme temperatures, or specialized applications like aerospace.

Q4: What units should I use?
A: The formula uses SI units (kg, m, s). For mph, convert to m/s (1 mph ≈ 0.447 m/s).

Q5: Is this the same as wind load on structures?
A: No, wind load considers additional factors like shape coefficients and gust factors.