Department Syllabus
MAT 221B: Mathematical Fluid Dynamics

When taught: Winter, alternate years
Suggested text ($): I.M. Cohen and P. K. Kundu, "Fluid Mechanics," Chapters 8, 9, 10, 12 ($90)
Units/lectures: 4 units; lecture/term paper or discussion
Prerequisites: MAT 221A or consent of instructor.

Catalog description

Kinematics and dynamics of fluids. The Euler and Navier-Stokes equations. Vorticity dynamics. Irrotational flow. Low Reynolds number flows and the Stokes equations. High Reynolds number flows and boundary layers. Compressible fluids. Shock waves.

Suggested schedule

Prepared by: Albert Fannjiang
Posted: March 2009

LecturesSections Topics/Comments
3Chapter 8 Scaling, similarity, Buckingham's Pi theorem
29.1 - 9.6 Laminar flows between plates, in a pipe, between concentric cylinders
29.7 - 9.10 Exactly solvable unsteady laminar flows
29.11 - 9.13 Stokes' and Oseen's solutions
110.1 - 10.3 Boundary layer approximations
110.4 Closed form solution
210.5 Blasius solution, Falkner-Skan solution
110.6 von Karman momentum integral
210.7 - 10.8 Flow separation
110.9 Flow past a cylinder, von Karman vortex street
110.10 - 10.11 Flow past a sphere
110.12 2-d jets
110.17 Laminar shear layer
212.3 The Benard problem
112.5 Taylor instability
112.6 Kelvin-Helmholtz instability
112.7 Taylor-Goldstein equation, Richardson number criterion
112.7 Howard's semicircle theorem
112.8 Squire's theorem, Orr-Sommerfeld equation
112.9 Rayleigh's inflection point criterion, Ejortoft's theorem
112.10 Boundary layer instability

COMMENT: I taught 221AB from this book in 2007-2008 and appreciated the clarity, readability and variety of interesting topics covered in the book. Cohen & Kundu also has a lot more material than one can cover in a two-quarter course. It is, however, not written in the style of a typical "mathematical fluids" book. For the latter, one can consult, e.g., the well written Mathematical Theory of Incompressible Nonviscous Fluids by Marchioro and Pulvirenti. Such books are often more focused but limited in scope.