MTech Heat Transfer In Propulsion Systems syllabus for 2 Sem 2020 scheme 20MAP23

Fundamentals:

Conduction, Convection, Radiation, Concept of boundary layers - velocity / thermal. Need for turbine blade cooling, turbine cooling technology, turbine heat transfer and cooling issues.

Turbine-Stage Heat Transfer:

Introduction, Real engine turbine stage, simulated turbine stage, time-resolved heat-transfer measurement on a rotor blade. Cascade blade heat transfer. Airfoil end wall heat transfer. Turbine rotor blade tip heat transfer. Leading edge region heat transfer. Flat surface heat transfer.

Turbine Film Cooling:

Fundamentals of film cooling. Film cooling on rotating turbine blades. Film cooling on cascade vane simulations, Film cooling on cascade blade simulations, Film cooling on airfoil end walls. Turbine blade tip film cooling. Leading edge region film cooling. Flat surface film cooling. Film cooling effectiveness. Discharge coefficient of turbine cooling holes. Film cooling effect on aerodynamic losses.

Jet Impingement Cooling:

Heat transfer enhancement by a single jet, Impingement heat transfer in the midchord region by jet array, Impingement cooling of leading edge.

Rib Turbulated Cooling:

Effect of rib layouts and flow parameters on ribbed channel heat transfer, heat transfer coefficient and friction factor correlation, high performance ribs, effect of surface heating conditions, nonrectangular cross section channels, effect of high blockage ratio ribs, effect of rib profile effect of number of ribbed walls, effect of a 180o sharp turn, detailed heat transfer coefficient measurements in ribbed channel, effect of film cooling hole on ribbed channel heat transfer.

Pin Fin Cooling:

Flow and heat transfer analysis with single pin, pin array and correlation, effect of pin shape on heat transfer, effect of nonuniform array and flow convergence, effect of skewed pin array, partial pin arrangements, effect of turning flow, pin fin cooling with ejection, effect of missing pin on heat transfer coefficient.

Temperature Measurement Techniques:
Infrared thermography, Thermocouples, Heat flux gauges, Liquid crystal thermography, Temperature sensitive paints. Engine Temperature and Health Monitoring- Thermal barrier coatings, Engine temperature monitoring, Engine safety and health monitoring.

Compound and new cooling techniques:

Impingement on ribbed walls, impingement on pinned and dimpled walls, combined effect of ribbed wall with grooves, combined effect of ribbed walls with pins and impingement inlet conditions, combined effect of swirl flow and ribs, impingement heat transfer with perforated baffles, combined effect of swirl and impingement. Concept of heat pipe for turbine cooling, new cooling concepts.

Course outcomes:

At the end of the course the student will be able to:

1. Apply fundamentals of heat transfer in aero engines.

2. Distinguish turbine film cooling, jet impingement cooling.

3. Apply cooling and their techniques (such as Rib turbulated cooling, pin fin cooling and temperature measurement techniques)

Question paper pattern:

The SEE question paper will be set for 100 marks and the marks scored will be proportionately reduced to 60.

• The question paper will have ten full questions carrying equal marks.
• Each full question is for 20 marks.
• There will be two full questions (with a maximum of four sub questions) from each module.
• Each full question will have sub question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbook/ Textbooks

1 Gas Turbine Heat Transfer and Cooling Technology Je Chin Han, Sandip Dutta & Srinath V Ekkad. Taylor and Francis New York 2000

2 Heat Transfer JP Holman McGraw – Hill Book Company 1996

Reference Books

1 Gas Turbine Handbook Anthony Giampaolo Fairmont Pr 1997

2 Engine health monitoring as applied to gas turbine engines NAL, Bangalore 1983

3 Measurement techniques in heat transfer Eckert, E R G and Goldstein R J Ed Washington: Hemisphere Pub. Corp.