Lewis Ferry Moody


Lewis Ferry Moody (5 January 1880 – 21 February 1953) was an American engineer and professor, best known for the Moody chart, a diagram capturing relationships between several variables used in calculating fluid flow through a pipe. He has 23 patents for his inventions.[1] He was the first Professor of Hydraulics in the School of Engineering at Princeton.[2]

Lewis Ferry Moody
Born5 January 1880
DiedFebruary 21, 1953(1953-02-21) (aged 73)
OccupationMechanical engineer
EmployerPrinceton University
Known forMoody chart
AwardsElliott Cresson Medal (1945)
Moody chart showing friction factor plotted against Reynolds number for various roughnesses


He was born on 5 January 1880.

Lewis F. Moody as professor of fluid mechanics and machine design taught at Princeton University starting in 1930.[3] He co-wrote the book Fifty Years’ Progress in Hydraulics with fellow engineer Blake R. Van Leer.[4]

He married Eleanor Greene. His wife died in 1937.[5] His daughter, Eleanor Lowry Moody, married in 1944.[6] He was awarded the Elliott Cresson Medal in 1945.

He was awarded an Honorary Membership of the American Society of Mechanical Engineers (ASME) in 1951.[7]

He died on 21 February 1953.


Five years after his death, ASME created an Award to his honours: The Lewis F. Moody award, which is awarded for outstanding original papers useful to the practice of mechanical engineering by the Fluids Engineering Division (FED).[8]


  1. ^ iplexl.com - Petents list for Moody, Lewis Ferry[permanent dead link]
  2. ^ princeton.edu - Description of Acquisitions by the Princeton University Library, princeton.edu - Aerospace and Mechanical Sciences, The Department of
  3. ^ aiaa.org - Aerospace Education and Research at Princeton University, 1942–1975[permanent dead link]
  4. ^ Cooper, Paul; Samuel Martin, C.; O'Hern, Timothy J. (2016). "History of the Fluids Engineering Division". Journal of Fluids Engineering. 138 (10). doi:10.1115/1.4033976.
  5. ^ "Mrs. Lewis F. Moody". New York Times. January 7, 1937.
  6. ^ "Eleanor L. Moody A Bride. Wd. to Lt. Edward Broadhurst". New York Times. January 3, 1944.
  7. ^ asme.org - Honorary Members
  8. ^ asme.org - Lewis F. Moody award Archived 2007-08-07 at the Wayback Machine

Further readingEdit

  • Moody, Lewis F. (1944), "Friction factors for pipe flow" (PDF), Transactions of the ASME, 66 (8): 671–684, archived from the original (PDF) on 2008-09-08