July–Nov, 2024: ME5010 – Electric and Hybrid Vehicle Technology
Jan–May, 2024: ME6139 – Simulation of IC Engine Processes
July–Nov, 2023: ME3103 – Energy Conversion Systems
Jan–May, 2023: ME6139 – Simulation of IC Engine Processes
July–Nov, 2022: ME3103 – Energy Conversion Systems
Jan–May, 2022: ME6164 – Laser Diagnostics in Engines
July–Nov, 2021: ME3103 – Energy Conversion Systems
Jan–May, 2021: ME6139 – Simulation of IC Engine Processes
July–Nov, 2020: ME3103 – Energy Conversion Systems
Jan–May, 2020: ME6164 – Laser Diagnostics in Engines
July–Nov, 2019: ME1100 – Thermodynamics
Jan–May, 2019: ME6139 – Simulation of IC Engine Processes
July–Nov, 2018: ME5103(*) – Incompressible Fluid Flow
Jan–May, 2018: ME6080(*) & ME5109(*) – Measurements in Thermal Engineering, ME6164 – Laser Diagnostics in Engines.
July–Nov, 2017: ME6040 – Incompressible Fluid Flow
Jan–May, 2017: ME6080(*) – Measurements in Thermal Engineering
July–Nov, 2016: ME6040 – Incompressible Fluid Flow; ME3270(*) – Mechanical Engineering Lab – I.
Jan–May, 2016: ME6080(*) – Measurements in Thermal Engineering
July–Nov, 2015: ME6490 – Laser Diagnostics in Engines; ME3270 – Mechanical Engineering Lab – I.
Jan–May, 2015: ME1100 – Thermodynamics
* also the coordinator.
Syllabus:
ME6164 - Laser Diagnostics in Engines
Introduction to Electromagnetism; Maxwell's equations; Wave equation;
Geometrical Optics and Wave Optics.
Classical versus laser-based diagnostic techniques; Properties of lasers.
Introduction to laser spectroscopy; Laser Rayleigh scattering (LRS); Mie scattering; Raman scattering; Coherent anti-stokes Raman scattering (CARS) for temperature and species detection; Laser-induced fluorescence (LIF) including 2-D temperature measurement by PLIF.
In-cylinder flow measurement - Laser Doppler anemometry, Particle image velocimetry;
Laser extinction and absorption; Soot diagnostics by LII.
ME6139 – Simulation of IC Engine Processes
Basics of different types of internal combustion engines; Combustion and Thermochemistry; Chemical Kinetics; Introduction to Mass Transfer.
Engine cycle events – Ideal and Actual cycles; Governing equations for engine cycle simulation; Engine heat transfer; Engine friction calculations.
Estimations of burned and unburned mixture compositions, and their properties; Equilibrium composition of combustion.
Gas exchange processes; Spray processes; Ignition delay; Engine combustion and emissions.
Modeling of homogeneous and heterogeneous charge engines; Applications to engine development.
ME6080 - Measurements in Thermal Engineering
(i) Introduction to measurements; Measurement categories: primary and derived quantities, intrusive and non-intrusive methods.
Analysis of experimental data: types of errors, uncertainty analysis, statistical analysis of experimental data: normal distributions (confidence interval and level of significance), Chauvenet’s criterion, Chi-square test of goodness of fit, method of least squares (regression analysis, correlation coefficient), multi-variable regression, Students’ t-distribution, graphical analysis and curve fitting.
(iii) Measurement of temperature: thermoelectric thermometry, resistance thermometry, pyrometry, liquid in glass, bimetallic, and liquid crystal thermometer; transient response of thermal systems.
(iv) Static and dynamic characteristics: system response, first and second order systems and analysis.
(v) Measurement of pressure: U-tube manometer, Bourdon gage, pressure transducers, measurement of transient and vacuum pressures.
(vi) Measurement of volume flow rate: variable area type flow meter-orifice plate meter, flow nozzle, venture meter, rotameter.
(vii) Measurement of velocity: Pitot static and impact probes, velocity measurement based on thermal effect, Doppler velocimeter, time of flight velocimeter, PIV.
(viii) Measurement of torque, power, and thermophysical properties; Analytical methods and pollution monitoring – mass spectrometry – chromatography – spectroscopy.
ME6040 - Incompressible Fluid Flow
(i) Introduction and Basic Concepts: Definition of fluid and concept of continuum; Properties of fluids; Flow field, streamlines, pathlines and streaklines; Kinematics of fluid motion; Eulerian and Lagrangian formulations.
(ii) Governing Equations of Fluid Flow: Reynolds transport theorem; Mass and momentum conservations; Navier-Stokes equations; Analytical solutions to simple flows; Euler and Bernoulli equations.
(iii) Potential Flow: Stream function and velocity potential; Elementary plane flows; Superposition of elementary plane flows; Concepts of lift and drag.
(iv) Boundary Layer Theory: Concept of boundary layer; Derivation of boundary layer equations; Boundary layer flow over a flat plate; Boundary layer flow with non-zero pressure gradient; Flow separation and drag; Free shear flow.
(v) Turbulent flows: Characteristics of turbulent flows; Concept of averaging; Reynolds Averaged Navier Stokes (RANS) equations; Turbulent internal flows; Turbulent external flows.
ME5010 - Electric and Hybrid Vehicle Technology
(i) Motivation and Introduction: Engine characteristics; Electric vehicles and their configurations. Comparison with conventional vehicles as regards to emissions and fuel economy and well to wheel performance; Hybrid electric vehicles – series and parallel configurations – their advantages and limitations; Classification of hybrid electric vehicles based on degree of hybridization. Benefits, Power flows, energy usage and losses, and drive quality; PHEV architectures. Series-parallel and complex HEV layouts.
(ii) Components of Hybrid Electric Drives: Different kinds of motors like induction, permanent magnet, switched reluctance, and their characteristics. Different control methods for motors used in hybrid and electric drives; Fuel Cells, hybrid fuel cell systems and control.
(iii) Energy storage devices: Types of batteries, their characteristics, charging systems and energy management; Super capacitors, flywheels and hydraulic accumulators; High voltage electrical architectures and integration of power electronic systems. Rectifiers, buck converters, bi directional DC-DC converters, voltage and current source inverters; Thermal Management of electric vehicle components including battery, power electronics and motors.
(iv) Hybrid vehicle modelling: Vehicle model; modelling powertrain subsystem like motors, energy storage devices and transmissions; Gradeability requirements, gear ratios; Sizing the components of a hybrid /electric vehicle based on application and range; Optimization algorithms, Energy recovery, regenerative braking and energy management.
(v) Recent Electric and Hybrid vehicle technologies case studies.
ME3270 - Mechanical Engineering Lab–I
(i) Performance of an air conditioner, (ii) Temperature and viscosity measurements, (iii) Gas flow measurement using an orifice and a rotameter, (iv) Emission measurement in an engine, (v) Forced convection over a flat plate, (vi) Radiation law verification, (vii) Free vibration test, (viii) Hoop stress determination, (ix) Torque measurement, (x) Measurements of roundness and roughness, (xi) CMM and TMM, and (xii) CNC machining.
ME3103 - Energy Conversion Systems
IC Engines: Evolution of IC engines; Features of IC engines; Nomenclature; Classification; Cylinder layouts; Applications of IC engines; Components of IC engines; Details of the engine components (material and manufacturing); Construction and working of 2S, 4S, petrol and diesel engines; Scavenging in 2S engines; Wankel engines; Comparison of engines; Valve and port timing diagrams; P-v diagrams; Engine test parameters and their calculations. Introduction to conventional and alternative fuels for IC engines. Introduction to IC engine combustion and emissions.
Turbomachines: Introduction: Turbomachines and positive displacement machines, Types of turbomachines, Static and stagnation states and representation of expansion and compression processes in T-s/h-s plots, Application of first and second laws of thermodynamics to turbomachines and the concept of efficiency of turbomachines.
Principle of Turbomachines: Velocity triangle and concept of absolute and relative velocities, Euler equation for turbomachines, Concept of degree of reaction, Outline of different losses in turbomachines leading to coupling power and efficiency.
Introduction to machines: Pump and fan, hydraulic turbine, steam and gas turbines.
Non-dimensional groups in turbomachines: affinity law, concepts of shape number, specific speed, specific diameter and classification of turbomachines based on specific speed, performance of turbomachines, system characteristics and operating point.
Refrigeration: Vapour compression refrigeration systems: Review of refrigerants, Actual cycles - superheating, sub-cooling and liquid suction heat exchanger – multi-stage and cascade systems.
Basics of vapour absorption refrigeration system - cycle and properties of working fluids.
ME1100 – Thermodynamics
(i) Fundamentals: System & Control Volume; Property; State & Process; Exact & Inexact differentials; Measurement of absolute Pressure & Δp.
(ii) Work: Thermodynamic definition of work; Displacement work; Path dependence of displacement work and illustrations of simple processes; Fully resisted, partially resisted and unresisted processes; Other forms of work - gravitational, electrical, magnetic, spring and shaft.
(iii) Temperature & Heat: Definition of thermal equilibrium; Zeroth law; Definition of temperature and temperature scales; Various thermometers; Definition of heat; Examples of heat/work interaction in systems.
(iv) First Law for System: First Law for Cyclic & Non-cyclic processes; Concept of total energy E; Demonstration that E is a property; Various modes of energy.
(v) Pure substance: Two property rule; Enthalpy and internal energy; Properties of Ideal Gases and Mixtures of Ideal Gases; Properties of water-steam system; Const. temperature and Const. pressure heating of water; Definitions of saturated states; P-v-T surface; Use of steam tables- Saturation tables, Super-heated tables, Identification of states & determination of properties.
(vi) First Law for Flow Processes: Derivation of general energy equation for a control volume; Steady state steady flow processes; Examples of steady flow devices; Unsteady processes.
(vii) Second law: Definitions of direct and reverse heat engines; Definitions of thermal efficiency and COP; Kelvin-Planck and Clausius statements; Definition of reversible process; Internal and external irreversibilities; Carnot cycle; Absolute temperature scale.
(viii) Entropy: Clausius inequality; Definition of entropy S ; Demonstration that entropy S is a property; Evaluation of ΔS for solids, liquids, and ideal gases undergoing various processes ; Determination of s from steam tables; Examples - Turbine, compressor, pump, nozzle, diffuser; Definition of Isentropic efficiency; Available and Unavailable energy; Concept of Irreversibility and Lost work.
(ix) Thermodynamic cycles: Basic Rankine cycle; Basic Brayton cycle ; Basic vapor compression cycle.