Pressure Tendency Calculator

Pressure Tendency Formula

The formula to calculate pressure tendency is:

\[ \text{PT} = -g \cdot \text{p}{\text{bl}} \cdot \text{W}{\text{bl}} \]

Where:

• PT is the pressure tendency (Pa/s).
• g is the acceleration due to gravity (9.8 m/s²).
• pbl is the boundary layer air density (kg/m³).
• Wbl is the boundary layer vertical outflow (m/s).

Steps to Calculate Pressure Tendency:

1. Determine the boundary layer air density (pbl).
2. Determine the boundary layer vertical outflow (Wbl).
3. Use the formula: PT = -g \cdot pbl \cdot Wbl.
4. Multiply the values to get the pressure tendency in Pa/s.

Example Calculation:

If the air density is 1.2 kg/m³ and the vertical outflow is 0.5 m/s:

\[ \text{PT} = -9.8 \cdot 1.2 \cdot 0.5 = -5.88 \text{ Pa/s} \]

This calculator simplifies the process of determining pressure tendency, an important factor in atmospheric and fluid dynamics.