Steven A. Orszag

"Dr. Orszag greatly advanced the study of [the Navier-Stokes] equations by developing new methods for solving them, known as spectral methods. The complexities of the work led him to the development of new methods of computing, which were specifically devised to help with the difficulties of creating mathematical models of turbulent flow situations. Dr. Orszag’s advances made problem-solving in the field exponentially faster and more accurate."

– Weber, Bruce. "Steven Orszag, Pioneer in Fluid Dynamics Study, Dies at 68," The New York Times, May 7, 2011. https://www.nytimes.com/2011/05/08/us/08orszag.html