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Nusselt number for both constant wall temperature and heat flux Formula

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Local Nusselt number is the ratio of convective to conductive heat transfer across a boundary. Check FAQs

Nu x = 0.17 \cdot ({(Gr x \cdot Nu \cdot Pr)}^{0.25})

Nu_x - Local Nusselt Number?Gr_x - Local Grashof Number?Nu - Nusselt Number?Pr - Prandtl Number?

Nusselt number for both constant wall temperature and heat flux Example

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Here is how the Nusselt number for both constant wall temperature and heat flux equation looks like with Values.

Here is how the Nusselt number for both constant wall temperature and heat flux equation looks like with Units.

Here is how the Nusselt number for both constant wall temperature and heat flux equation looks like.

1.5392 = 0.17 \cdot ({(8000 \cdot 1.2 \cdot 0.7)}^{0.25})

1.5392 = 0.17 \cdot ({(8000 \cdot 1.2 \cdot 0.7)}^{0.25})

1.5392 = 0.17 \cdot ({(8000 \cdot 1.2 \cdot 0.7)}^{0.25})

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Nusselt number for both constant wall temperature and heat flux Solution

Follow our step by step solution on how to calculate Nusselt number for both constant wall temperature and heat flux?

FIRST Step Consider the formula

Nu x = 0.17 \cdot ({(Gr x \cdot Nu \cdot Pr)}^{0.25})

Next Step Substitute values of Variables

∴

Nu x = 0.17 \cdot ({(8000 \cdot 1.2 \cdot 0.7)}^{0.25})

Next Step Prepare to Evaluate

∴

Nu x = 0.17 \cdot ({(8000 \cdot 1.2 \cdot 0.7)}^{0.25})

Next Step Evaluate

∴

Nu x = 1.53918647898488

LAST Step Rounding Answer

∴

Nu x = 1.5392

Nusselt number for both constant wall temperature and heat flux Formula Elements

Variables

Local Nusselt Number

Local Nusselt number is the ratio of convective to conductive heat transfer across a boundary.

Symbol: Nu_x

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Local Nusselt Number

Local Grashof Number

Local Grashof Number is a dimensionless number in fluid dynamics and heat transfer which approximates the ratio of the buoyancy to viscous force acting on a fluid.

Symbol: Gr_x

Measurement: NAUnit: Unitless

Note: Value can be positive or negative.

Formulas to find Local Grashof Number

Nusselt Number

The Nusselt Number is the ratio of convective to conductive heat transfer at a boundary in a fluid. Convection includes both advection and diffusion.

Symbol: Nu

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Nusselt Number

Prandtl Number

The Prandtl number (Pr) or Prandtl group is a dimensionless number, named after the German physicist Ludwig Prandtl, defined as the ratio of momentum diffusivity to thermal diffusivity.

Symbol: Pr

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Prandtl Number

Other formulas in Nusselt Number category

Go Nusselt number for higher value of GrPr

Nu avg L = 0.59 \cdot {(G \cdot Pr)}^{0.25}

Go Nusselt number for all value of GrPr and constant heat flux

Nu = {(0.825 + (\frac{0.387 \cdot ({(G \cdot Pr)}^{0.167})}{{(1 + {(\frac{0.437}{Pr})}^{0.5625})}^{0.296}}))}^{2}

Go Nusselt number for all value of GrPr and constant wall temperature

Nu = {(0.825 + (\frac{0.387 \cdot ({(G \cdot Pr)}^{0.167})}{{(1 + {(\frac{0.492}{Pr})}^{0.5625})}^{0.296}}))}^{2}

Go Nusselt number for turbulent flow

Nu = 0.10 \cdot ({(G \cdot Pr)}^{0.333})

How to Evaluate Nusselt number for both constant wall temperature and heat flux?

Nusselt number for both constant wall temperature and heat flux evaluator uses Local Nusselt Number = 0.17*((Local Grashof Number*Nusselt Number*Prandtl Number)^0.25) to evaluate the Local Nusselt Number, The Nusselt number for both constant wall temperature and heat flux formula is defined as the ratio of convective to conductive heat transfer across a boundary. Local Nusselt Number is denoted by Nu_x symbol.

How to evaluate Nusselt number for both constant wall temperature and heat flux using this online evaluator? To use this online evaluator for Nusselt number for both constant wall temperature and heat flux, enter Local Grashof Number (Gr_x), Nusselt Number (Nu) & Prandtl Number (Pr) and hit the calculate button.

FAQs on Nusselt number for both constant wall temperature and heat flux

What is the formula to find Nusselt number for both constant wall temperature and heat flux?

The formula of Nusselt number for both constant wall temperature and heat flux is expressed as Local Nusselt Number = 0.17*((Local Grashof Number*Nusselt Number*Prandtl Number)^0.25). Here is an example- 1.539186 = 0.17*((8000*1.2*0.7)^0.25).

How to calculate Nusselt number for both constant wall temperature and heat flux?

With Local Grashof Number (Gr_x), Nusselt Number (Nu) & Prandtl Number (Pr) we can find Nusselt number for both constant wall temperature and heat flux using the formula - Local Nusselt Number = 0.17*((Local Grashof Number*Nusselt Number*Prandtl Number)^0.25).

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Nusselt number for both constant wall temperature and heat flux Formula

Nusselt number for both constant wall temperature and heat flux Example

Nusselt number for both constant wall temperature and heat flux Solution

Nusselt number for both constant wall temperature and heat flux Formula Elements

Other formulas in Nusselt Number category

How to Evaluate Nusselt number for both constant wall temperature and heat flux?

FAQs on Nusselt number for both constant wall temperature and heat flux

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