Correlações empíricas de placa plana
Default

Input data

Table number δ

C table number

Nu table number

Superficial temperature

Fluid temperature

Reynolds

Prandtl

Characteristic length

Output data

Film temperature

δ

δt

Cfx

Nusselt

Description

Given the fluid flow conditions, the dimensionless numbers (Reynolds and Prandtl), as well as the surface and fluid temperatures and the length of the flat plate that is in contact with the fluid, calculates, through empirical correlations, the thickness of the boundary layer (δ and δt), the Nusselt number and the drag coefficient Cf,xC_{f,x}

Table δ

NumberCondition
1Laminate
2Turbulent

Table Cf,xC_{f,x}

NumberCondition
1Laminar, local
2Laminar, medium
3Turbulent, local, Rex108Re_x \leq 10^8
4Turbulent, medium, Rex,c=5105Re_{x,c} = 5\cdot 10^5, ReL108Re_L \leq 10^8

Nu Table

NumberCondition
1Laminar, local, Pr0.6Pr \geq 0.6
2Laminar, medium, Pr0.6Pr \geq 0.6
3Turbulent, local, ReL108Re_L \leq 10^8, 0.6Pr600.6 \leq Pr \leq 60
4Turbulent, medium, Rex,c=5105Re_{x,c} = 5\cdot 10^5, ReL108Re_L \leq 10^8, 0.6Pr600.6 \leq Pr \leq 60

Observation

All correlations are evaluated at film temperature.

References

  • WELTY, James R.; RORRER, Gregory L.; FOSTER, David G. Fundamentos de Transferência de Momento, de Calor e de Massa, 6ª edição. Grupo GEN, 2017.