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Airy Linear Water Wave Dispersion Relation Calculator

Airy linear wave theory describes surface gravity water waves, where phase speed depends non-linearly on wavelength and water depth.

Calculated Result
130.4 m

Local Wavelength (L)

Wave Celerity / Phase Speed (c)

13.04 m/s (46.9 km/h)

Water Depth Regime

Intermediate Depth (0.05 ≤ d/L ≤ 0.5)

Deep Water Baseline (L0)

156.1 m

Calculation Breakdown

  1. Solve transcendental dispersion equation ω² = g·k·tanh(k·d)k = 0.0482 rad/m (L = 2π/k = 130.4 m)
  2. Determine phase velocity c = L / Tc = 130.4 / 10 = 13.04 m/s

Wavelength vs Water Depth (T = 10s Swell)

Interactive visualization based on your current inputs

m
0.039781171565 m15 m25 m50 m100 m (Deep)Depth (m)Wavelength (m)

What Is the Airy Linear Water Wave Dispersion Relation Calculator?

Airy linear wave theory describes surface gravity water waves, where phase speed depends non-linearly on wavelength and water depth.

How Does the Airy Linear Water Wave Dispersion Relation Calculator Work?

The calculation evaluates user-provided measurements using recognized domain equations, converts between measurement units, and adjusts for real-world efficiency factors.

Airy Linear Water Wave Dispersion Relation Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

\omega^2 = g k \tanh(k d), \quad L = \frac{2\pi}{k}, \quad c = \frac{L}{T}

As waves migrate from deep water (d > L/2) into intermediate and shallow coastal water, wavelength shortens and wave speed drops.

How to Use the Airy Linear Water Wave Dispersion Relation Calculator

  1. Enter your primary measurements in the input fields above.
  2. Select your preferred units (e.g. metric or imperial) if applicable.
  3. Review or adjust operational assumptions such as field efficiency.
  4. Click Calculate to instantly generate the full results breakdown and visual chart.
  5. Use the Reset button at any time to clear the form and test a new scenario.

Step-by-Step Example Calculation

10-Second Ocean Swell at 25m Depth

Input Values:

wavePeriodSeconds:10
waterDepthMeters:25

Understanding Your Result

Your calculated result represents the realistic operational capacity or baseline output under the specified conditions. Comparing theoretical and effective outputs reveals the direct impact of turns, overlap, and practical downtime.

Factors That Affect the Result

Field terrain, operator experience, equipment maintenance, overlap margin, and weather conditions can significantly influence real-world output.

When Should You Use This Calculator?

Use this calculator whenever you need quick, verified estimates for job planning, budgeting, equipment sizing, or project timelines.

Assumptions & Limitations

  • Uses the Fenton-McKee analytical approximation to solve the transcendental dispersion equation.

Frequently Asked Questions

Calculation Accuracy & Reference Note

This calculator implements verified, deterministic mathematical equations based on published standards. Results should be treated as professional engineering estimates; always verify critical operations with local equipment manuals and site inspections.

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