Nusselt Number Calculator
Dimensionless heat transfer coefficient: Nu = hL/k.
How to Use This Calculator
Enter convective heat transfer coefficient, characteristic length, and fluid thermal conductivity. The result is dimensionless.
Formula
Nu = h L / k
About Nusselt Number
Nusselt number relates convective to conductive heat transfer across a boundary.
Frequently Asked Questions
Is Nu always constant?
No, it depends on flow regime, geometry, and fluid properties.
What is a typical range?
Forced convection typically yields Nu from tens to hundreds; turbulent internal flow can be higher.