JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

UNIT - I

Fundamentals of Turbo Machines: Classifications, Applications, Thermodynamic analysis, Isentropic flow. Energy transfer. Efficiencies, Static and Stagnation conditions, Continuity equations, Euler's flow through variable cross sectional areas, Unsteady flow in turbo machines Gas Dynamics: Fundamental thermodynamic concepts, isentropic conditions, mach numbers and area, Velocity relations, Dynamic Pressure, Normal shock relation for perfect gas. Supersonic flow, oblique shock waves. Normal shock recoveries, Detached shocks, Aerofoil theory.

UNIT - II

Steam Nozzles: Convergent and Convergent-Divergent nozzles, Energy Balance, Effect of back pressure of analysis. Designs of nozzles. Steam Turbines: Impulse turbines, Compounding, Work done and Velocity triangle, Efficiencies, Constant reactions, Blading, Design of blade passages, Angle and height, Secondary flow. Leakage losses, Thermodynamic analysis of steam turbines.

UNIT - III

Centrifugal compressor: Types, Velocity triangles and efficiencies, Blade passage design, Diffuserand pressure recovery. Slip factor, Stanitz and Stodolas formula's, Effect of inlet mach numbers, Pre whirl, Performance Axial Flow Compressors: Flow Analysis, Work and velocity triangles, Efficiencies, Thermodynamic analysis. Stage pressure rise, Degree of reaction, Stage Loading, General design, Effect of velocity, Incidence, Performance Cascade Analysis: Geometrical and terminology. Blade force, Efficiencies, Losses, Free end force, Vortex Blades.

UNIT - IV

Axial Flow Gas Turbines: Work done. Velocity triangle and efficiencies, Thermodynamic flow analysis, Degree of reaction, Zweifels relation, Design cascade analysis, Soderberg, Hawthrone, Ainley, Correlations, Secondary flow, Free vortex blade, Blade angles for variable degree of reaction. Actuator disc, Theory, Stress in blades, Blade assembling, Material and cooling of blades, Performances, Matching of compressors and turbines, Off design performance.

UNIT - V

Jet Propulsion-Classification-Thermodynamic analysis-Performance parameters-Rocket Propulsion- Classification-Propulsion systems.

REFERENCES:

• 1. Principles of Turbo Machines/DG Shepherd / Macmillan
• 2. Turbines, Pumps, Compressors/Yahya/TMH
• 3. Practice on Turbo Machines/ G. Gopal Krishnan &D. Prithviraj/ Sci Tech Publishers, Chennai
• 4. Gas Turbines/ Ganesan/TMH
• 5. Thermal Turbo machines- Singh-Wiley
• 6. Fundamentals of Turbo machinery/William W Perg/John Wiley & Sons
• 7. Principles of Jet Propulsion and Gas Turbine/NJ Zucrow/John Wiley & Sons/Newyork
• 8. Turbo machinery: Design & Theory-Rama S.R.Gorla, AijazA.Khan-CRC Press
• 9. Turbo machinery: Basic Theory & Applications-Earl Logar Jr-CRC Press M. Tech – I Year –II Sem. (Thermal Engineering)