Advanced Heat & Mass Transfer

Review: Reviews of basic laws of Conduction, Convection and Radiation Conduction: One dimensional steady state conduction with variable thermal conductivity and with internal distributed heat source, Local heat source in non-adiabatic plate, Thermocouple conduction error, Extended Surfaces-Review, Optimum fin of rectangular profile, straight fins of triangular and parabolic profiles, Optimum profile, Circumferential fin of rectangular profile, spines, design considerations. 2D steady state conduction, semi-infinite and finite flat plates, Temperature fields in finite cylinders and in infinite semi-cylinders, spherical shells, Graphical method, relaxation technique.

Unsteady state conduction, Sudden changes in the surface temperatures of infinite plates, cylinders and spheres using Groeber’s and Heisler charts for plates, cylinders and spheres suddenly immersed in fluids.

Radiation: Review of radiation principles, Diffuse surfaces and the Lambert’s cosine law. Radiation through non-absorbing media, Hottel’s method of successive reflections, Gebhart’s unified method, Poljak’s method. Radiation through absorbing media, Logarithmic decrement of radiation, Apparent absorptive of simple shaped gas bodies, Net heat exchange between surfaces separated by absorbing medium, Radiation of luminous gas flames.

Convection: Heat transfer in laminar flow, free convection between parallel plates, Forced internal flow through circular tubes, Fully developed flow, Velocity and thermal entry length, solutions with constant wall temperature and with constant heat flux, Forced external flow over a flat plate, two-dimensional velocity and temperature boundary layer equations, Karman Pohlhousen approximate integral method.

Heat transfer in turbulent flow, Eddy heat diffusivity, Reynold’s analogy between skin friction and heat transfer, Prandtl-Taylor, Von Karman and Martineli’s analogies, Turbulent flow through circular tubes.

REFERENCES:

1. Principals of Heat Transfer/Frank Kreith/Cengage Learning

2. Elements of Heat Transfer/E. Radha Krishna/CRC Press/2012

3. Heat Transfer/RK Rajput/S.Chand