Course Meeting Times
Lectures: 2 sessions / week, 2 hours / session
Recitations: 1 session / week, 1 hour / session
Course Description
This course develops the theory and design of hydrofoil sections, including lifting and thickness problems for sub-cavitating sections, unsteady flow problems, and computer-aided design of low drag cavitation-free sections. It also covers lifting line and lifting surface theory with applications to hydrofoil craft, rudder, control surface, propeller and wind turbine rotor design. Other topics include computer-aided design of wake adapted propellers; steady and unsteady propeller thrust and torque; performance analysis and design of wind turbine rotors in steady and stochastic wind; and numerical principles of vortex lattice and lifting surface panel methods. Projects illustrate the development of computational methods for lifting, propeller and wind turbine flows, and use of state-of-the-art simulation methods for lifting, propulsion and wind turbine applications.
Text
This course uses notes developed by Prof. Jake Kerwin in past years.
Kerwin, Justin. Lecture Notes on Hydrofoils and Propellers. Cambridge, MA, January 2001. (PDF - 3.4 MB) (Courtesy of Prof. Justin Kerwin. Used with permission.)
Evaluation
METHODS | WEIGHT |
---|---|
Assignments (Approx. 8-10) | 40% |
Exams (2) | 40% |
Project | 20% |
Calendar
SES # | TOPICS | KEY DATES |
---|---|---|
1 | Intro: Propeller geometry, 2D foil geometry, performance selection and B-series | |
2 | Actuator disk theory | Homework 1 out |
3 | Potential flow around a circle w. Lift, circulation Kutta-Joukowski law | |
4 | Vortex lines, Biot-Savart law and velocity induced by a vortex segment | Homework 1 due |
5 | Linearized lifting surface theory, bound and free vorticity, Kelvin's theorem | Homework 2 out |
6 | Vortex lattice lifting line, 3D vortex lattice lifting surface | Homework 2 due |
7 | Lift and drag on a lin. Lifting surface, Glauerts method | Homework 3 out |
8 | Prop. Lifting line theory, Betz/Lerbs criteria, Kramer diagram | |
9 | Propeller vortex lattice lifting line | Homework 3 due |
10 | Quiz 1, 1 hour open book | |
11 | Linear 2D theory, circ. Distributions, Glauert's theory | Homework 4 out |
12 | Flat plates, parabolic meanlines and NACA data | |
13 | Linearized thickness, lighthill's rule, leading edge suction | Homework 4 due |
14 | 2D foil design, cavitation buckets, Brockett diagrams | Homework 5 out |
15 | 2D panel methods | |
16 | 2D Vortex lattice method |
Homework 5 due Homework 6 out |
17 | Topic TBD | |
18 | 2D boundary layer theory XFOIL | Homework 6 due |
19 | Quiz 2, 1 hour open book | |
20 | Vortex lattice propeller lifting surface, PBD | |
21 | 3D panel methods | |
22 | Effective wake, unsteady inflow and vortex lattice solvers | |
23 | Throughflow solvers and coupled methods | |
24 | Windmills | |
25 | Waterjets | |
26 | Advanced propulsion |