Significant Wave Height For Free Long Waves Calculator

Formula Used:

\[ H_{sf} = \frac{K \times H_s^{1.11} \times T_p^{1.25}}{D^{0.25}} \]

Constant for Free Long Waves (K):

Significant Wave Height (Hs):

Design Wave Period (Tp):

Water Depth (D):

Significant Wave Height for Free Waves (Hsf):

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1. What is Significant Wave Height for Free Long Waves?

Significant Wave Height for Free Long Waves [length] is the average height of the one third of waves observed during a given period of time. It represents the characteristic wave height in free long wave conditions.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ H_{sf} = \frac{K \times H_s^{1.11} \times T_p^{1.25}}{D^{0.25}} \]

Where:

\( H_{sf} \) — Significant Wave Height for Free Waves (m)
\( K \) — Constant for Free Long Waves
\( H_s \) — Significant Wave Height (m)
\( T_p \) — Design Wave Period (s)
\( D \) — Water Depth (m)

Explanation: This formula calculates the significant wave height for free long waves based on the constant parameter, significant wave height, design wave period, and water depth.

3. Importance of Wave Height Calculation

Details: Accurate wave height estimation is crucial for coastal engineering, offshore structure design, navigation safety, and marine operations planning.

4. Using the Calculator

Tips: Enter all required parameters with positive values. The constant K, significant wave height, design wave period, and water depth must all be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is the significance of the constant K?
A: The constant for free long waves refers to a parameter that remains unchanged for given set of conditions, typically describing the properties of wave motion in shallow water.

Q2: How is significant wave height defined?
A: Significant Wave Height is the mean wave height of the highest one-third of the waves observed during a specific time period.

Q3: What does design wave period represent?
A: The Design Wave Period refers to the characteristic period of waves used in design calculations, which are defined by the significant wave height, the peak energy period, and the wave spectrum.

Q4: How does water depth affect wave height?
A: Water depth between the surface and the seafloor significantly influences wave characteristics through shoaling and refraction effects.

Q5: What are typical applications of this calculation?
A: This calculation is used in coastal engineering, port design, offshore platform design, and marine navigation safety assessments.