Dimensionless Fetch Calculator

✖Straight Line Distance over which Wind Blows is defined as total stretch of wind motion in a straight line influencing other parameters of the wave.ⓘ Straight Line Distance over which Wind Blows [X]			+10% -10%
✖Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity.ⓘ Friction Velocity [V_f]			+10% -10%

✖Dimensionless Fetch for the empirical prediction methods is the distance over water that the wind blows in a single direction.ⓘ Dimensionless Fetch [X']

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Dimensionless Fetch Solution

STEP 0: Pre-Calculation Summary

Formula Used

Dimensionless Fetch = ([g]*Straight Line Distance over which Wind Blows/Friction Velocity^2)
X' = ([g]*X/V_f^2)
This formula uses 1 Constants, 3 Variables

Constants Used

[g] - Gravitational acceleration on Earth Value Taken As 9.80665

Variables Used

Dimensionless Fetch - Dimensionless Fetch for the empirical prediction methods is the distance over water that the wind blows in a single direction.
Straight Line Distance over which Wind Blows - (Measured in Meter) - Straight Line Distance over which Wind Blows is defined as total stretch of wind motion in a straight line influencing other parameters of the wave.
Friction Velocity - (Measured in Meter per Second) - Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity.

STEP 1: Convert Input(s) to Base Unit

Straight Line Distance over which Wind Blows: 15 Meter --> 15 Meter No Conversion Required
Friction Velocity: 6 Meter per Second --> 6 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

X' = ([g]*X/V_f^2) --> ([g]*15/6^2)

Evaluating ... ...

X' = 4.08610416666667

STEP 3: Convert Result to Output's Unit

4.08610416666667 --> No Conversion Required

FINAL ANSWER

4.08610416666667 ≈ 4.086104 <-- Dimensionless Fetch

(Calculation completed in 00.020 seconds)

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Created by Mithila Muthamma PA

Coorg Institute of Technology (CIT), Coorg

Mithila Muthamma PA has created this Calculator and 2000+ more calculators!

Verified by Chandana P Dev

NSS College of Engineering (NSSCE), Palakkad

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Dimensionless Fetch Formula

LaTeX Go

Dimensionless Fetch = ([g]*Straight Line Distance over which Wind Blows/Friction Velocity^2)
X' = ([g]*X/V_f^2)

What is Geostrophic wind?

The geostrophic flow is the theoretical wind that would result from an exact balance between the Coriolis force and the pressure gradient force. This condition is called geostrophic equilibrium or geostrophic balance. The geostrophic wind is directed parallel to isobars.

How to Calculate Dimensionless Fetch?

Dimensionless Fetch calculator uses Dimensionless Fetch = ([g]*Straight Line Distance over which Wind Blows/Friction Velocity^2) to calculate the Dimensionless Fetch, The Dimensionless Fetch formula is defined as the basic tenet of the empirical prediction method and interrelationship with other wave parameters governed by Universal Laws. Dimensionless Fetch is denoted by X' symbol.

How to calculate Dimensionless Fetch using this online calculator? To use this online calculator for Dimensionless Fetch, enter Straight Line Distance over which Wind Blows (X) & Friction Velocity (V_f) and hit the calculate button. Here is how the Dimensionless Fetch calculation can be explained with given input values -> 4.086104 = ([g]*15/6^2).

FAQ

What is Dimensionless Fetch?

The Dimensionless Fetch formula is defined as the basic tenet of the empirical prediction method and interrelationship with other wave parameters governed by Universal Laws and is represented as X' = ([g]*X/V_f^2) or Dimensionless Fetch = ([g]*Straight Line Distance over which Wind Blows/Friction Velocity^2). Straight Line Distance over which Wind Blows is defined as total stretch of wind motion in a straight line influencing other parameters of the wave & Friction Velocity, also called shear velocity, is a form by which a shear stress may be re-written in units of velocity.

How to calculate Dimensionless Fetch?

The Dimensionless Fetch formula is defined as the basic tenet of the empirical prediction method and interrelationship with other wave parameters governed by Universal Laws is calculated using Dimensionless Fetch = ([g]*Straight Line Distance over which Wind Blows/Friction Velocity^2). To calculate Dimensionless Fetch, you need Straight Line Distance over which Wind Blows (X) & Friction Velocity (V_f). With our tool, you need to enter the respective value for Straight Line Distance over which Wind Blows & Friction Velocity and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

How many ways are there to calculate Dimensionless Fetch?

In this formula, Dimensionless Fetch uses Straight Line Distance over which Wind Blows & Friction Velocity. We can use 1 other way(s) to calculate the same, which is/are as follows -

Dimensionless Fetch = (Dimensionless Wave Height/Dimensionless Constant)^(1/Dimensionless Exponent)

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