Course

Unit 1

Fundamentals of Conduction: Fourier Law of heat conduction, General heat conduction equation, Thermal diffusivity and significance, thermal conductivity of solids, liquids and gases, Concept of thermal resistance, Steady State heat transfer calculations and determination of temperature distribution in Composite plates, cylinders and spheres, Critical Thickness and its significance, Effect of Variation of Thermal Conductivity in Solids, Heat transfer through extended surfaces, fin performance parameters, Unsteady State Heat Conduction: Biot number and its significance, Lumped System Analysis, Heat Transfer in Semi-infinite and Infinite Solids.

Unit 2

Fundamentals of Convection: Physical mechanism of forced and free convection, Newton’s law of cooling, Determination of heat transfer coefficient, Thermal and hydrodynamic boundary layer, Laminar and turbulent flow, development of correlation for Nusselt numbers, Reynolds Analogy – Free Convection involving plates – vertical and horizontal, Grashoff number and Rayleigh number.

Unit 3

Radiative Heat Transfer: Introduction to Physical Mechanism, Radiation Properties,Radiation Shape Factors, Heat Exchange between Non-Black Bodies, Radiation Shields. Introduction to cooling of rocket nozzles, Rocket Thrust Chambers and rocket motors.

Requisite(s): 19AEExxx- MECHANICS OF FLUIDS

Course Objectives

The objective of this course is to provide the students with a basic understanding of phenomena of heat transfer: Conduction, convection and radiation, and the methods to solve engineering problems that involve heat transfer.

Course Outcomes

CO1: Obtain temperature distribution and heat transfer through solid slabs, extended surfaces, cylinders as well as spheres during steady state heat transfer.

CO2: Develop solutions involving semi-infinite and infinite solids during unsteady heat transfer.

CO3: Develop theoretical basis and empirical correlations for the analysis of forced and free convection problems.

CO4: Understand the properties of radiation, physical mechanism, shape factors and radiation shields and applythe concepts to basic problems in radiative heat transfer.

CO5: Understanding heat transfer in high-speed flows, cooling of thrust chambers and re-entry vehicles.

CO-PO Mapping

Evaluation Pattern

• CA – Can be Quizzes, Assignment, Projects, and Reports

Text book(s)

Incorpera F.P., and Dewit D.P., “Fundamentals of Heat and Mass Transfer”,6^th Edition, John Wiley & Sons, NewYork 2019.

Reference books

Yunus A Cengel., “Heat and Mass Transfer: Fundamentals & Applications”, 4th Edition, Tata McGraw-Hill, 2022. Holman J. P, “Heat Transfer”., 4^th Edition, Tata McGraw-Hill, 2011.