• Aerodynamics II
    • School of Aeronautics & Astronautics
    • Credit. 3
    • AV309
    • Enroll
    • Fall , 2015
    • 4994
    • Course Description:
    • ( Exchange Programme )
    • This course is a compulsory course for aerospace undergraduate students. The main contents of the course are: compressibility of fluid, small perturbation and sonic speed, and fundamental equations governing compressible fluid flow; quasi-one-dimensional isentropic flow and normal shock; quasi-one-dimensional inviscid flows with area-change, friction, and/or heat transfer; oblique shock and expansion wave; linearized subsonic and supersonic flows; method of characteristics; compressible viscous flow, boundary layer, and turbulence; introduction to computational fluid dynamics; introduction to hypersonic flow.
      Upon finishing the course, the students are expected to obtain the following basic knowledge and are capable of: (1) Formulate and apply appropriate aerodynamic models to predict the forces on and performance of two/three-dimensional high-speed configurations; (2) Assess the applicability of aerodynamic models to predict the forces on and performance of two/three-dimensional high-speed configurations and estimate the errors resulting from their application.
    • Course Syllabus:
    • After completing the course, students should be able to:
      1.Explain what characteristics air has in the context of high-speed flow;
      2.Apply flow similarity, non-dimensional coefficients such as the lift and drag coefficients, and non-dimensional parameters such as Mach number and Reynolds number in aerodynamic modeling of realistic configurations;
      3.Explain the sources of friction, induced, wave, and pressure drag;
      4.Explain the basic elements of thin airfoil potential flow models and apply them to estimate the forces on airfoils
      5.Explain the use of wind tunnel testing in aerodynamic modeling focusing on the importance of flow similarity in scale testing and on the typical corrections (e.g. wall corrections) required to simulate flight conditions
      6.Assess the ability and limitations of an aerodynamic model to estimate lift and drag (separated into friction, induced, wave, and pressure drag contributions) for a specific application;
      7.Apply linear and non-linear sensitivity analysis to quantify the impact of error or uncertainty in aerodynamic predictions on the prediction of flight vehicle performance;
    • Schedule:
    • Topics / Credit hours / Teaching methodology / Tasks / Intended learning outcomes / Assessment methods

      1.Elements of Compressible Flows: (1) Review of Thermodynamics: Perfect Gas, Internal Energy and Enthalpy, Entropy, Second Law of Thermodynamics, Isentropic Relations;(2) Definition of Compressibility; (3) Review of Governing Equations for Compressible Flows; (4) Total (Stagnation) Condition; (5) Sound Speed; Regions of Dependence and Influence / 3
      2.Quasi One-Dimensional Isentropic Compressible Flows: (1)Governing Equations; (2) Flow with Simple Area Change; (3) Mass Flow Formula and Choking. / 3
      3.Normal Shock Wave: (1)Governing Equations for Normal Shock; (2) Shock Relations; (3) Measurement of Velocity in a Compressible Flow. / 3
      4.Quasi One-Dimensional Compressible Flows: (1) Flow with Simple Area Change and Normal Shock; (2) Flow inside a Laval Nozzle; (3) Flow with Simple Friction; (4) Flow with Simple Heating/Cooling; (5)Supersonic Wind Tunnel. / 6
      5.Oblique Shock and Expansion Waves: (1) Oblique Shock Relations; (2) Flow over Wedges and Cones; (3) Shock Interaction and Reflection; (4) Detached Shock; (5) Prandtl-Meyer Expansion Wave; (6) Shock-Expansion Theory: Application to Supersonic Airfoils; (7) Nozzle Exit Flow / 6
      6.Mid-Term Exam / 3
      7.Linearized Supersonic Flows: (1) Full-Velocity Potential Equation; (2) Linearized -Velocity Potential Equation; (3) Linearized Supersonic Pressure Coefficient; (4) Supersonic Airfoil / 3
      8.Method of Characteristics: (1) Quasilinear PDE; (2) Characteristic Theory; (3) Method of Characteristics Applied to 2-D Supersonic Flows; (4) Supersonic Nozzle Design / 6
      9.Linearized Subsonic Flows & Transonic Flows: (1) Prandtl-Glauert Rule; (2) Sound Barrier; (3) Area Rule; (4) Supercritical Airfoil. / 6
      10.Viscous Compressible Flow: (1) Compressible Couette Flow; (2) Compressible Poiseuille Flow; (3) Compressible Boundary Layer over a Flat Plate; (4) Reference Temperature Method; (5) Stagnation Point Aerodynamic Heating; (6) Introduction to Turbulence and Turbulence Modelling. / 9
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    • Yu Wensheng
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  • Prerequisite Course:

    Aerodynamics I or Fluid Mechanics

  • Textbooks:

    Textbook: John D. Anderson Jr. (2011), Fundamentals of Aerodynamics, 5th Edition, McGraw-Hill Book Company.
    Maurice J. Zucrow and Joe D. Hoffman, Gas Dynamics, Volumes I and II, John Wiley and Sons, Inc.
    A.H. Shapiro (1954), The Dynamics and Thermodynamics of Compressible Fluid Flow, The Ronald Press Company.
    Kuethe and Chow, Foundation of Aerodynamics, 5th Edition, John Wiley and
  • Grading:

    20% Homework
    20% Written Mid-Term Exam
    30% Written Final Exam
    30% Term Project Report and Presentation
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