Height of Upper Part of Vessel Calculator

Height of Upper Part of Vessel Formula:

\[ h_2 = \frac{P_{uw}}{k_1 \times k_{coefficient} \times p_2 \times D_o} \]

Wind Load on Upper Part:

Shape Factor Coefficient (k₁):

Vibration Coefficient (k):

Wind Pressure on Upper Part:

Outside Diameter of Vessel:

Height of Upper Part (h₂): m

1. What is Height of Upper Part of Vessel?

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

Purpose: It helps engineers design vessels to withstand wind forces by calculating the appropriate height for structural stability.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ h_2 = \frac{P_{uw}}{k_1 \times k_{coefficient} \times p_2 \times D_o} \]

Where:

\( h_2 \) — Height of upper part of vessel (meters)
\( P_{uw} \) — Wind load acting on upper part (Newtons)
\( k_1 \) — Shape factor coefficient (typically 0.69 ±5%)
\( k_{coefficient} \) — Vibration coefficient (typically 4 ±5%)
\( p_2 \) — Wind pressure on upper part (Pascals)
\( D_o \) — Outside diameter of vessel (meters)

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

3. Importance of Height Calculation

Details: Proper height estimation ensures structural integrity against wind forces, prevents vibration issues, and maintains operational safety.

4. Using the Calculator

Tips: Enter wind load in Newtons, shape factor coefficient (default 0.69), vibration coefficient (default 4), wind pressure in Pascals (default 40), and vessel diameter in meters (default 0.6). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is shape factor coefficient typically 0.69?
A: This value accounts for the typical cylindrical shape of vessels and its aerodynamic properties.

Q2: What affects the vibration coefficient?
A: Material properties, vessel contents, mounting method, and environmental conditions all influence vibration characteristics.

Q3: How do I determine wind pressure?
A: Wind pressure depends on location, height above ground, and local building codes. Default value is 40 Pa.

Q4: What if my vessel isn't cylindrical?
A: The shape factor coefficient must be adjusted for non-cylindrical vessels based on their cross-section.

Q5: Does this calculation include safety factors?
A: No, additional safety factors should be applied based on industry standards and risk assessment.