System Modeling Techniques II

L 3 C 3

Teachers Continuous Evaluation: 40 marks. Term-End Semester Examination: 60 marks.

Course outcomes

• Ability to do line integration
• Ability to use the residue theorem to solve problems
• Use Laplace and Fourier methods to solve ODE
• Ability to solve simple PDE

Unit I

Roots, Derivative. Analytic Function, Cauchy–Riemann Equations. Laplace’s Equation, Exponential Function, Trigonometric and Hyperbolic Functions. Euler’s Formula, de’Moivre’s theorem (without proof), Logarithm. General Power. Principal Value.Singularities and Zeros. Infinity, Line Integral in the Complex Plane, Cauchy’s Integral Theorem, Cauchy’s Integral Formula, Derivatives of Analytic Functions, Taylor and Maclaurin Series.

Unit II

Complex Analysis –II: Laurent Series, Residue Integration Method. Residue Integration of Real Integrals, Geometry of Analytic Functions: Conformal Mapping, Linear Fractional Transformations (Möbius Transformations), Special Linear Fractional Transformations, Conformal Mapping by Other Functions, Applications: Electrostatic Fields, Use of Conformal Mapping. Modeling, Heat Problems, Fluid Flow. Poisson’s Integral Formula for Potentials

Unit III

Laplace Transforms: Definitions and existence (without proof), properties, First Shifting Theorem (s-Shifting), Transforms of Derivatives and Integrals and ODEs, Unit Step Function (Heaviside Function).Second Shifting Theorem (t-Shifting), Short Impulses. Dirac’s Delta Function. Partial Fractions, Convolution. Integral Equations, Differentiation and Integration of Transforms. Solution of ODEs with Variable Coefficients, Solution of Systems of ODEs. Inverse Laplace transform and its properties. Fourier Analysis: Fourier Series, Arbitrary Period. Even and Odd Functions. Half-Range Expansions, Sturm– Liouville Problems. Fourier Integral, Fourier Cosine and Sine Transforms, Fourier Transform. Usage of fourier analysis for solution of ODEs. Inverse Fourier transform and its properties.

Unit IV

Partial Differential Equations (PDEs): Basic Concepts of PDEs. Modeling: Vibrating String, Wave Equation. Solution by Separating Variables. Use of Fourier Series. D’Alembert’s Solution of the Wave Equation. Characteristics. Modeling: Heat Flow froma Body in Space. Heat Equation Solution by Fourier Series.Steady Two- Dimensional Heat Problems. Dirichlet Problem. Heat Equation: Modeling Very Long Bars.Solution by Fourier Integrals and Transforms. Modeling: Membrane, Two-Dimensional Wave Equation. Rectangular Membrane. Laplacian in Polar Coordinates. Circular Membrane. Laplace’s Equation in Cylindrical and Spherical Coordinates. Potential. Solution of PDEs by Laplace Transforms.

Textbooks

• Advanced Engineering Mathematics by Erwin Kreyszig, John Wiley, 10Ed., 2011.

References

• Engineering Mathematics by K.A. Stroud withDexter J. Booth, Macmillan, 2020.
• Advanced Engineering Mathematics by Larry Turyn, Taylor and Francis, 2014.
• Advanced Engineering Mathematics by Dennis G. Zill, Jones & Bartlett Learning, 2018.
• Advanced Engineering Mathematics with MATLABby Dean G. Duffy, Taylor and Francis, 2017.
• Advanced Engineering Mathematics by Merle C. Potter, Jack L. Lessing, and Edward F. Aboufadel, Springer (Switzerland), 2019.
• Mathematical Methods for Physics and Engineering, by K. F. Riley, M. P. Hobson and S. J. Bence, CUP, 2013.