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Incident Wave Height is obtained as the arithmetic mean of the wave heights measured by two gauges separated by a quarter of a wavelength [length]. Check FAQs
Hi=Lo(tan(α)Ir)2
Hi - Incident Wave Height?Lo - Incident Wave Length in Deepwater?α - Angle Sloped Plane forms with the Horizontal?Ir - Surf Similarity Number or Iribarren Number?

Incident Wave Height given Surf Similarity Number or Iribarren Number Example

With values
With units
Only example

Here is how the Incident Wave Height given Surf Similarity Number or Iribarren Number equation looks like with Values.

Here is how the Incident Wave Height given Surf Similarity Number or Iribarren Number equation looks like with Units.

Here is how the Incident Wave Height given Surf Similarity Number or Iribarren Number equation looks like.

160.0785Edit=16Edit(tan(16.725Edit)0.095Edit)2
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Incident Wave Height given Surf Similarity Number or Iribarren Number Solution

Follow our step by step solution on how to calculate Incident Wave Height given Surf Similarity Number or Iribarren Number?

FIRST Step Consider the formula
Hi=Lo(tan(α)Ir)2
Next Step Substitute values of Variables
Hi=16m(tan(16.725°)0.095)2
Next Step Convert Units
Hi=16m(tan(0.2919rad)0.095)2
Next Step Prepare to Evaluate
Hi=16(tan(0.2919)0.095)2
Next Step Evaluate
Hi=160.078480319279m
LAST Step Rounding Answer
Hi=160.0785m

Incident Wave Height given Surf Similarity Number or Iribarren Number Formula Elements

Variables
Functions
Incident Wave Height
Incident Wave Height is obtained as the arithmetic mean of the wave heights measured by two gauges separated by a quarter of a wavelength [length].
Symbol: Hi
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Incident Wave Length in Deepwater
Incident Wave Length in Deepwater is the wave length of the wave that travels from the generating source towards the load.
Symbol: Lo
Measurement: LengthUnit: m
Note: Value should be greater than 0.
Angle Sloped Plane forms with the Horizontal
Angle Sloped Plane forms with the Horizontal is the inclination or tilt of the plane relative to the level ground.
Symbol: α
Measurement: AngleUnit: °
Note: Value should be greater than 0.
Surf Similarity Number or Iribarren Number
Surf Similarity Number or Iribarren Number is a dimensionless parameter used to model several effects of (breaking) surface gravity waves on beaches and coastal structures.
Symbol: Ir
Measurement: NAUnit: Unitless
Note: Value can be positive or negative.
tan
The tangent of an angle is a trigonometric ratio of the length of the side opposite an angle to the length of the side adjacent to an angle in a right triangle.
Syntax: tan(Angle)

Other Formulas to find Incident Wave Height

​Go Incident Wave Height given Water Surface Amplitude
Hi=Ncos(2πxLo)cos(2πtT)

Other formulas in Wave Transmission Coefficient and Water Surface Amplitude category

​Go Wave Transmission Coefficient
Ct=C(1-(FR))
​Go Dimensionless Coefficient in Seelig Equation for Wave Transmission Coefficient
C=Ct1-(FR)
​Go Freeboard for given Wave Transmission Coefficient
F=R(1-(CtC))
​Go Wave Runup above Mean Water Level for given Wave Transmission Coefficient
R=F1-(CtC)

How to Evaluate Incident Wave Height given Surf Similarity Number or Iribarren Number?

Incident Wave Height given Surf Similarity Number or Iribarren Number evaluator uses Incident Wave Height = Incident Wave Length in Deepwater*(tan(Angle Sloped Plane forms with the Horizontal)/Surf Similarity Number or Iribarren Number)^2 to evaluate the Incident Wave Height, The Incident Wave Height given Surf Similarity Number or Iribarren Number is defined as the arithmetic mean of the wave heights measured by two gauges separated a quarter of a wave length. Incident Wave Height is denoted by Hi symbol.

How to evaluate Incident Wave Height given Surf Similarity Number or Iribarren Number using this online evaluator? To use this online evaluator for Incident Wave Height given Surf Similarity Number or Iribarren Number, enter Incident Wave Length in Deepwater (Lo), Angle Sloped Plane forms with the Horizontal (α) & Surf Similarity Number or Iribarren Number (Ir) and hit the calculate button.

FAQs on Incident Wave Height given Surf Similarity Number or Iribarren Number

What is the formula to find Incident Wave Height given Surf Similarity Number or Iribarren Number?
The formula of Incident Wave Height given Surf Similarity Number or Iribarren Number is expressed as Incident Wave Height = Incident Wave Length in Deepwater*(tan(Angle Sloped Plane forms with the Horizontal)/Surf Similarity Number or Iribarren Number)^2. Here is an example- 159.5721 = 16*(tan(0.291906317395997)/0.095)^2.
How to calculate Incident Wave Height given Surf Similarity Number or Iribarren Number?
With Incident Wave Length in Deepwater (Lo), Angle Sloped Plane forms with the Horizontal (α) & Surf Similarity Number or Iribarren Number (Ir) we can find Incident Wave Height given Surf Similarity Number or Iribarren Number using the formula - Incident Wave Height = Incident Wave Length in Deepwater*(tan(Angle Sloped Plane forms with the Horizontal)/Surf Similarity Number or Iribarren Number)^2. This formula also uses Tangent function(s).
What are the other ways to Calculate Incident Wave Height?
Here are the different ways to Calculate Incident Wave Height-
  • Incident Wave Height=Water Surface Amplitude/(cos((2*pi*Horizontal Ordinate)/Incident Wave Length in Deepwater)*cos((2*pi*Time Elapsed)/Reflected Wave Period))OpenImg
Can the Incident Wave Height given Surf Similarity Number or Iribarren Number be negative?
No, the Incident Wave Height given Surf Similarity Number or Iribarren Number, measured in Length cannot be negative.
Which unit is used to measure Incident Wave Height given Surf Similarity Number or Iribarren Number?
Incident Wave Height given Surf Similarity Number or Iribarren Number is usually measured using the Meter[m] for Length. Millimeter[m], Kilometer[m], Decimeter[m] are the few other units in which Incident Wave Height given Surf Similarity Number or Iribarren Number can be measured.
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