Wind Pressure Formula:
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Definition: This calculator converts wind speed to dynamic pressure using the basic fluid dynamics equation.
Purpose: It helps engineers, architects, and meteorologists determine the wind load on structures and objects.
The calculator uses the formula:
Where:
Explanation: The dynamic pressure increases with the square of wind speed and linearly with air density.
Details: Accurate wind pressure calculations are essential for structural design, wind load analysis, and safety assessments.
Tips: Enter air density (default 1.225 kg/m³ at sea level) and wind speed in m/s. All values must be > 0.
Q1: What is standard air density?
A: At sea level and 15°C, it's approximately 1.225 kg/m³. Decreases with altitude and increases with humidity.
Q2: How do I convert wind speed from km/h to m/s?
A: Divide km/h by 3.6 (1 m/s = 3.6 km/h).
Q3: Why does pressure increase with speed squared?
A: Kinetic energy increases with velocity squared, and pressure is force per area related to this energy.
Q4: Is this the same as wind load?
A: Wind load includes additional factors like shape coefficients, but this is the fundamental dynamic pressure component.
Q5: What's a typical wind pressure value?
A: For 10 m/s wind at sea level: ~61 Pa; for 20 m/s: ~245 Pa; hurricane speeds (50 m/s) can exceed 1500 Pa.