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Turbulence in Fluid Flows

Introduction to turbulence – Equations of fluid motion – Statistical description of turbulent flows – Mean-flow equations – Space and time scales of turbulent motion – Jets, wakes and boundary layers – Coherent structures – Spectral dynamics – Homogeneous and isotropic turbulence – Two-dimensional turbulence – Coherent structures – Vorticity dynamics – Intermittency – Modeling of turbulent flows.

Two Phase Flow and Heat Transfer

Review of Single-Phase Flows: one dimensional conservation equations – introduction to two-phase flows – flow regimes.

Flow Models for Two-Phase Flows: one-dimensional homogeneous flow model – separated flow model – drift flux model – simplified treatment of bubbly, slug, and annular flows – flow regime maps – transition criterion – pressure drop correlations and void fraction correlation – phenomenological description of flooding – critical two-phase flows – prediction models.

Molecular Dynamics and Materials Failure

Introduction – materials deformation and fracture phenomena – strength of materials: flaws, defects, and a perfect material, brittle vs ductile material behavior – the need for atomistic simulations – basic atomistic modeling – classical molecular dynamics – interatomic potential, numerical implementation – visualisation – atomistic elasticity – the virial stress and strain – multiscale modeling and simulation methods – deformation and dynamical failure of brittle and ductile materials – applications.

High Temperature Gas Dynamics

General features and applications of high temperature flows – equilibrium kinetic theory: Maxwellian distribution, collision rates and mean free path – chemical thermodynamics – mixture of perfect gases, law of mass action – statistical mechanics: enumeration of micro-states, energy distribution, contribution of internal structure – equilibrium flow: ideal dissociating gas, equilibrium shock wave relations, nozzle flows – vibrational and chemical rate processes – flows with vibrational and chemical non-equilibrium.

Operations Research

Introduction – linear programming – duality and sensitivity analysis – transportation and assignment problems – goal programming – integer programming – network optimization models – dynamic programming – theory of games – queuing theory – simulation – nontraditional optimization algorithms.

Aeroacoustics

Basics of acoustics – general theory of aerodynamic sound – flow and acoustic interactions – feedback phenomenon – supersonic jet noise – sonic boom – noise radiation from rotors and fans – aeroacoustic measurements.

Hypersonic Aerothermodynamics

Introduction to Hypersonic Flows – Inviscid Hypersonic Flow: Newtonian flow, Mach number independence, Hypersonic similarity, Blast wave theory, Hypersonic small disturbance theory, Stagnation region flow – Viscous Hypersonic Flow: Similarity parameters, Self-similar solutions, Hypersonic turbulent boundary layer, Reference temperature method, Stagnation region flow field, Viscous interactions – Real Gas effects: Inviscid equilibrium and non-equilibrium flows, Viscous high temperature flows – Experimental facilities – Hypersonic design considerations.

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