Wind Pressure acting on Upper Part of Vessel Calculator

Wind Pressure Formula:

\[ p2 = \frac{Puw}{k1 \times kcoefficient \times h2 \times Do} \]

Wind Load acting on Upper Part of Vessel:

Coefficient depending on Shape Factor:

Coefficient Period of One Cycle of Vibration:

Height of Upper Part of Vessel:

Outside Diameter of Vessel:

Wind Pressure acting on Upper Part of Vessel (Pa):

1. What is Wind Pressure acting on Upper Part of Vessel?

Definition: This calculator estimates the wind pressure on the upper part of a vessel based on wind load, shape factor, vibration characteristics, and vessel dimensions.

Purpose: It helps engineers determine the wind pressure distribution on vessels for structural analysis and design.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ p2 = \frac{Puw}{k1 \times kcoefficient \times h2 \times Do} \]

Where:

\( p2 \) — Wind Pressure acting on Upper Part of Vessel (Pa)
\( Puw \) — Wind Load acting on Upper Part of Vessel (N)
\( k1 \) — Coefficient depending on Shape Factor (±5%)
\( kcoefficient \) — Coefficient Period of One Cycle of Vibration (±5%)
\( h2 \) — Height of Upper Part of Vessel (m)
\( Do \) — Outside Diameter of Vessel (m)

Explanation: The wind load is divided by the product of shape factor, vibration coefficient, and vessel dimensions to determine the wind pressure.

3. Importance of Wind Pressure Calculation

Details: Accurate wind pressure estimation ensures structural integrity, safety, and proper design of vessels exposed to wind loads.

4. Using the Calculator

Tips: Enter all required values with appropriate units. The coefficients have ±5% tolerance. All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical range for shape factor coefficient (k1)?
A: The shape factor typically ranges from 0.5 to 1.2 depending on vessel geometry, with 0.69 being a common default value.

Q2: How is the vibration coefficient determined?
A: The vibration coefficient depends on the natural frequency of the vessel and wind characteristics, often determined through structural analysis.

Q3: Why is there a ±5% tolerance on coefficients?
A: The tolerance accounts for uncertainties in shape factors and dynamic response characteristics of the vessel.

Q4: How do I obtain the wind load value?
A: Wind load can be calculated using wind speed, exposure category, and vessel dimensions according to engineering standards.

Q5: Does this calculation consider wind direction?
A: The basic formula assumes worst-case wind direction. For directional analysis, more complex methods are needed.