David George Crighton, FRS (15 November 1942 – 12 April 2000) was a British mathematician and physicist.

Life

Crighton was born in

Llandudno Llandudno (, ) is a seaside resort, town and community in Conwy County Borough, Wales, located on the Creuddyn peninsula, which protrudes into the Irish Sea. In the 2011 UK census, the community – which includes Gogarth, Penrhyn Bay, Craigsi ...

, North Wales, where his mother, Violet Grace Garrison, had been sent because of the bombing of

London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...

during the

Second World War World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposin ...

. He did not become interested in mathematics until his last two years at

Watford Grammar School for Boys Go Forward with Preparation , established = 1884 ( Single-sex) , type = partially selective academy , religious_affiliation = , president = , head_label = Headmaster , head = Ian A. Cooksey , r_head_label = , ...

. He entered

St John's College, Cambridge St John's College is a Colleges of the University of Cambridge, constituent college of the University of Cambridge founded by the House of Tudor, Tudor matriarch Lady Margaret Beaufort. In constitutional terms, the college is a charitable corpo ...

, in 1961 and started lecturing at Woolwich Polytechnic (today

University of Greenwich The University of Greenwich is a public university located in London and Kent, United Kingdom. Previous names include Woolwich Polytechnic and Thames Polytechnic. The university's main campus is at the Old Royal Naval College, which along with it ...

) in 1964, having completed only his

bachelor's degree A bachelor's degree (from Middle Latin ''baccalaureus'') or baccalaureate (from Modern Latin ''baccalaureatus'') is an undergraduate academic degree awarded by colleges and universities upon completion of a course of study lasting three to six ...

. A few years later he met

John Ffowcs Williams John "Shôn" Eirwyn Ffowcs Williams (1935–2020) was Emeritus Rank Professor of Engineering at the University of Cambridge and a former Master of Emmanuel College, Cambridge (1996–2002). He may be best known for his contributions to aeroa ...

and started to work for him at

Imperial College London Imperial College London (legally Imperial College of Science, Technology and Medicine) is a public research university in London, United Kingdom. Its history began with Prince Albert, consort of Queen Victoria, who developed his vision for a cu ...

, while simultaneously studying for his

doctorate A doctorate (from Latin ''docere'', "to teach"), doctor's degree (from Latin ''doctor'', "teacher"), or doctoral degree is an academic degree awarded by universities and some other educational institutions, derived from the ancient formalism ''l ...

(awarded in 1969) at the same place. In 1974, he was appointed as a

research fellow A research fellow is an academic research position at a university or a similar research institution, usually for academic staff or faculty members. A research fellow may act either as an independent investigator or under the supervision of a pr ...

in the Department of Engineering at the University of Cambridge. However, he never took up this post, but instead accepted the chair in

applied mathematics Applied mathematics is the application of mathematical methods by different fields such as physics, engineering, medicine, biology, finance, business, computer science, and industry. Thus, applied mathematics is a combination of mathematical s ...

at the

University of Leeds , mottoeng = And knowledge will be increased , established = 1831 – Leeds School of Medicine1874 – Yorkshire College of Science1884 - Yorkshire College1887 – affiliated to the federal Victoria University1904 – University of Leeds , ...

, which he held until 1986. He then returned to Cambridge as Professor of

Applied Mathematics Applied mathematics is the application of mathematical methods by different fields such as physics, engineering, medicine, biology, finance, business, computer science, and industry. Thus, applied mathematics is a combination of mathematical s ...

in succession to

George Batchelor George Keith Batchelor FRS (8 March 1920 – 30 March 2000) was an Australian applied mathematician and fluid dynamicist. He was for many years a Professor of Applied Mathematics in the University of Cambridge, and was founding head of the De ...

. Later, he became a well-loved Master of Jesus College (1997–2000), and was head of the Applied Mathematics and Theoretical Physics Department (

DAMTP The Faculty of Mathematics at the University of Cambridge comprises the Department of Pure Mathematics and Mathematical Statistics (DPMMS) and the Department of Applied Mathematics and Theoretical Physics (DAMTP). It is housed in the Centre for ...

) in Cambridge between 1991 and 2000, where he was held in huge regard by the faculty and students. Away from his mathematical work, Crighton was a devotee of the music of

Richard Wagner Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most op ...

, as well as music for the

piano The piano is a stringed keyboard instrument in which the strings are struck by wooden hammers that are coated with a softer material (modern hammers are covered with dense wool felt; some early pianos used leather). It is played using a keyboa ...

Work

Crighton's scientific interests were primarily in the theory of

wave In physics, mathematics, and related fields, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Waves can be periodic, in which case those quantities oscillate repeatedly about an equilibrium (res ...

s and

aeroacoustics Aeroacoustics is a branch of acoustics that studies noise generation via either turbulent fluid motion or aerodynamic forces interacting with surfaces. Noise generation can also be associated with periodically varying flows. A notable example of th ...

, as well as in some areas of

fluid mechanics Fluid mechanics is the branch of physics concerned with the mechanics of fluids ( liquids, gases, and plasmas) and the forces on them. It has applications in a wide range of disciplines, including mechanical, aerospace, civil, chemical and bio ...

. He published over 120 papers and one book. In his first paper, Crighton studied the

sound wave In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the ...

associated with

turbulent flow In fluid dynamics, turbulence or turbulent flow is fluid motion characterized by chaotic changes in pressure and flow velocity. It is in contrast to a laminar flow, which occurs when a fluid flows in parallel layers, with no disruption between ...

over a discontinuous

surface A surface, as the term is most generally used, is the outermost or uppermost layer of a physical object or space. It is the portion or region of the object that can first be perceived by an observer using the senses of sight and touch, and is t ...

formed by two semi-infinite flexible planes. Over the years, he worked broadly in the fields of acoustics, equation theory and quasi-diabatic systems including

solitons In mathematics and physics, a soliton or solitary wave is a self-reinforcing wave packet that maintains its shape while it propagates at a constant velocity. Solitons are caused by a cancellation of nonlinear and dispersive effects in the medium ...

. This included works on the generalised

Burgers' equation Burgers' equation or Bateman–Burgers equation is a fundamental partial differential equation and convection–diffusion equation occurring in various areas of applied mathematics, such as fluid mechanics, nonlinear acoustics, gas dynamics, and tr ...

and inverse scattering theory. The distinction of his work was recognised by the award of the

Rayleigh Medal The Rayleigh Medal is a prize awarded annually by the Institute of Acoustics for "outstanding contributions to acoustics". The prize is named after John Strutt, 3rd Baron Rayleigh. It should not be confused with the medal of the same name awarded ...

of the Institute of Acoustics, the Per Bruel Gold Medal of the

American Society of Mechanical Engineers The American Society of Mechanical Engineers (ASME) is an American professional association that, in its own words, "promotes the art, science, and practice of multidisciplinary engineering and allied sciences around the globe" via "continuing ...

and the

Otto Laporte Award The Otto Laporte Award (1972–2003) was an annual award by the American Physical Society (APS) to "recognize outstanding contributions to fluid dynamics" and to honour Otto Laporte (1902–1971). It was established as the Otto Laporte Memorial ...

of the

American Physical Society The American Physical Society (APS) is a not-for-profit membership organization of professionals in physics and related disciplines, comprising nearly fifty divisions, sections, and other units. Its mission is the advancement and diffusion of k ...

David Crighton Medal

The Institute of Mathematics and its Applications and the

London Mathematical Society The London Mathematical Society (LMS) is one of the United Kingdom's learned societies for mathematics (the others being the Royal Statistical Society (RSS), the Institute of Mathematics and its Applications (IMA), the Edinburgh Mathematical S ...

instituted the David Crighton Medal in 2002 in honour of Crighton. The award is made biennially, and was first presented in 2003. Holders of the medal include

Frank Kelly Francis Kelly (28 December 1938 – 28 February 2016) was an Irish actor, singer and writer, whose career covered television, radio, theatre, music, screenwriting and film. He is best remembered for playing Father Jack Hackett in the Channel ...

, Peter Neumann,

Keith Moffatt Henry Keith Moffatt, FRS FRSE (born 12 April 1935) is a Scottish mathematician with research interests in the field of fluid dynamics, particularly magnetohydrodynamics and the theory of turbulence. He was Professor of Mathematical Physics at ...

Christopher Zeeman Sir Erik Christopher Zeeman FRS (4 February 1925 – 13 February 2016), was a British mathematician, known for his work in geometric topology and singularity theory. Overview Zeeman's main contributions to mathematics were in topology, partic ...

, John Ball and David Abrahams.

References

{{DEFAULTSORT:Crighton, David 1942 births 2000 deaths People from Llandudno Academics of Imperial College London Academics of the University of Greenwich Academics of the University of Leeds People educated at Watford Grammar School for Boys Alumni of St John's College, Cambridge Fellows of Jesus College, Cambridge Masters of Jesus College, Cambridge Fellows of St John's College, Cambridge Fellows of the Royal Society Cambridge mathematicians Fluid dynamicists 20th-century English mathematicians Journal of Fluid Mechanics editors