Quick Answer
The eurotop 2018 wave reflection coefficient for smooth and rough sloping coastal structures calculator computes wave reflection coefficient from the input values you provide.
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Find Engineering Solutions →Result Interpretation
Eurotop 2018 Wave Reflection Coefficient for Smooth and Rough Sloping Coastal Structures calculator computes Wave reflection coefficient in dimensionless using the defined engineering formula and the input values provided. Wave reflection coefficient is expressed in dimensionless. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Significant wave height = 2.5
- Spectral wave length = 120
- Slope angle (radians) = 0.174533
- Freeboard = 1.2
Expected Result:
- Wave reflection coefficient = 0.51092888232862
Engineering Interpretation:
Under the given input conditions, the calculated result is: Wave reflection coefficient = 0.51092888232862 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from deterministically validated test cases.
Formula / Method
wave reflection coefficient = sqrt(pow(0.06 * tan(radians) / (significant wave height / spectral wave length), 2) + pow(0.27 * (1 - exp(-0.5 * (freeboard / significant wave height))) * (1 + 0.2 * (significant wave height / spectral wave length) * (1 / tan(radians)) * (1 / (1 + 0.05 * sqrt(significant wave height / spectral wave length) / tan(radians)))) * (1 / (1 + 0.2 * (significant wave height / spectral wave length) * (1 / tan(radians)) * (1 / (1 + 0.05 * sqrt(significant wave height / spectral wave length) / tan(radians))))) * (1 / (1 + 0.05 * (freeboard / significant wave height))), 2))Wave reflection coefficient.
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| Hm0 | Significant wave height | INPUT | Significant wave height |
| Lm0 | Spectral wave length | INPUT | Spectral wave length |
| alpha_rad | Slope angle (radians) | INPUT | Slope angle (radians) |
| Rc | Freeboard | INPUT | Freeboard |
| result | Wave reflection coefficient | OUTPUT | Wave reflection coefficient |
Calculation Steps
- Enter the significant wave height in m.
- Enter the spectral wave length in m.
- Enter the slope angle (radians) in rad.
- Enter the freeboard in m.
- Step 1: Compute wave reflection coefficient.
- Read the wave reflection coefficient (dimensionless) from the results.
Frequently Asked Questions
What does this calculator calculate?
The Eurotop 2018 Wave Reflection Coefficient for Smooth and Rough Sloping Coastal Structures calculator estimates Wave reflection coefficient based on the input parameters you provide
Why is significant wave height important in this calculation?
significant wave height is used directly in the calculation of wave reflection coefficient. Its effect on the result depends on the complete formula and the values of the other inputs.. When you enter significant wave height in m, the calculator uses it in the engineering formula to compute the output
How should I interpret the result wave reflection coefficient?
The calculator outputs wave reflection coefficient in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Significant wave height (m), Spectral wave length (m), Slope angle (radians) (rad), Freeboard (m). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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