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Fetch Parameter in SMB Prediction Method Formula

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Fetch Parameter is often associated with the concept of fetch, which is the unobstructed distance over which the wind blows across a body of water in a constant direction. Check FAQs

φ = \frac{[g] \cdot F l}{U^{2}}

φ - Fetch Parameter?F_l - Fetch Length?U - Wind Speed?[g] - Gravitational acceleration on Earth?

Fetch Parameter in SMB Prediction Method Example

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Here is how the Fetch Parameter in SMB Prediction Method equation looks like with Values.

Here is how the Fetch Parameter in SMB Prediction Method equation looks like with Units.

Here is how the Fetch Parameter in SMB Prediction Method equation looks like.

1.2258 = \frac{9.8066 \cdot 2}{4^{2}}

1.2258 = \frac{9.8066m/s² \cdot 2m}{{4m/s}^{2}}

1.2258 = \frac{9.8066 \cdot 2}{4^{2}}

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Fetch Parameter in SMB Prediction Method Solution

Follow our step by step solution on how to calculate Fetch Parameter in SMB Prediction Method?

FIRST Step Consider the formula

φ = \frac{[g] \cdot F l}{U^{2}}

Next Step Substitute values of Variables

∴

φ = \frac{[g] \cdot 2m}{{4m/s}^{2}}

Next Step Substitute values of Constants

∴

φ = \frac{9.8066m/s² \cdot 2m}{{4m/s}^{2}}

Next Step Prepare to Evaluate

∴

φ = \frac{9.8066 \cdot 2}{4^{2}}

Next Step Evaluate

∴

φ = 1.22583125

LAST Step Rounding Answer

∴

φ = 1.2258

Fetch Parameter in SMB Prediction Method Formula Elements

Variables

Constants

Fetch Parameter

Fetch Parameter is often associated with the concept of fetch, which is the unobstructed distance over which the wind blows across a body of water in a constant direction.

Symbol: φ

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Fetch Parameter

Fetch Length

Fetch Length is the unobstructed distance that wind can travel over water in a constant direction.

Symbol: F_l

Measurement: LengthUnit: m

Note: Value should be greater than 0.

Formulas to find Fetch Length

Wind Speed

Wind Speed is a fundamental atmospheric quantity caused by air moving from high to low pressure, usually due to changes in temperature.

Symbol: U

Measurement: SpeedUnit: m/s

Note: Value should be greater than 0.

Formulas to find Wind Speed

Gravitational acceleration on Earth

Gravitational acceleration on Earth means that the velocity of an object in free fall will increase by 9.8 m/s2 every second.

Symbol: [g]

Value: 9.80665 m/s²

Other formulas in SMB Prediction Method category

Go Significant Wave Height in SMB Prediction Method

H sig = \frac{U^{2} \cdot 0.283 \cdot \tanh (0.0125 \cdot φ^{0.42})}{[g]}

Go Wind Speed for Significant Wave Height in SMB Prediction Method

U = \sqrt{[g] \cdot \frac{H sig}{0.283 \cdot \tanh (0.0125 \cdot φ^{0.42})}}

Go Period of Significant Wave in SMB Prediction Method

T sig = \frac{U \cdot 7.540 \cdot \tanh (0.077 \cdot φ^{0.25})}{[g]}

Go Wind Speed given Period of Significant Wave in SMB Prediction Method

U = \frac{[g] \cdot T sig}{7.540 \cdot \tanh (0.077 \cdot φ^{0.25})}

How to Evaluate Fetch Parameter in SMB Prediction Method?

Fetch Parameter in SMB Prediction Method evaluator uses Fetch Parameter = ([g]*Fetch Length)/Wind Speed^2 to evaluate the Fetch Parameter, The Fetch Parameter in SMB Prediction Method formula is defined as the wind speed parameter influencing the Sverdrup-Munk-Bretschneider (SMB) method, which is a semi-empirical method that has been used for the prediction of the significant wave height (H_s) in global watersheds. Fetch Parameter is denoted by φ symbol.

How to evaluate Fetch Parameter in SMB Prediction Method using this online evaluator? To use this online evaluator for Fetch Parameter in SMB Prediction Method, enter Fetch Length (F_l) & Wind Speed (U) and hit the calculate button.

FAQs on Fetch Parameter in SMB Prediction Method

What is the formula to find Fetch Parameter in SMB Prediction Method?

The formula of Fetch Parameter in SMB Prediction Method is expressed as Fetch Parameter = ([g]*Fetch Length)/Wind Speed^2. Here is an example- 1.225831 = ([g]*2)/4^2.

How to calculate Fetch Parameter in SMB Prediction Method?

With Fetch Length (F_l) & Wind Speed (U) we can find Fetch Parameter in SMB Prediction Method using the formula - Fetch Parameter = ([g]*Fetch Length)/Wind Speed^2. This formula also uses Gravitational acceleration on Earth constant(s).

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Fetch Parameter in SMB Prediction Method Formula

Fetch Parameter in SMB Prediction Method Example

Fetch Parameter in SMB Prediction Method Solution

Fetch Parameter in SMB Prediction Method Formula Elements

Other formulas in SMB Prediction Method category

How to Evaluate Fetch Parameter in SMB Prediction Method?

FAQs on Fetch Parameter in SMB Prediction Method

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