Convection Heat Transfer
Convection heat transfer involves the interaction of conduction and fluid motion, governed by equations like the continuity and Navier-Stokes momentum equations. The chapter covers boundary layers, forced and free convection, dimensionless parameters, and correlations for heat transfer in both internal and external flows. Techniques for estimating heat transfer rates and approximate solutions for laminar boundary layers are also discussed.
Sections
Navigate through the learning materials and practice exercises.
What we have learnt
- Convection heat transfer is a combination of conduction within fluid layers and fluid motion.
- The behavior of fluid flow can be characterized by boundary layers, which affect heat transfer rates.
- Dimensionless numbers like Reynolds, Prandtl, and Nusselt are essential for analyzing different flow scenarios.
Key Concepts
- -- Convection
- The transfer of heat through fluid movement and conduction within fluid layers.
- -- Boundary Layer
- A thin layer where fluid velocity and temperature gradients develop, affecting heat transfer.
- -- Reynolds Number (Re)
- A dimensionless quantity that helps predict flow patterns in different fluid flow situations.
- -- Nusselt Number (Nu)
- A dimensionless number that measures the convective heat transfer relative to conductive heat transfer.
- -- Grashof Number (Gr)
- A dimensionless number that determines the flow regime in free convection systems.
Additional Learning Materials
Supplementary resources to enhance your learning experience.