Leonard Hmayakovich Oganesyan ( October 15, 1925 , Leninakan , USSR - September 13, 2013 , St. Petersburg , Russia ) is an outstanding specialist in numerical analysis, one of the creators of the finite element method (FEM) [1] , [2] . In 1963, he published the first in the USSR and one of the first works in the world in which a modern formulation of the method was given and the first results were obtained on its justification [2] , [3] .
| Leonard Hmayakovich Hovhannisyan | |
|---|---|
 | |
| Date of Birth | October 15, 1925 |
| Place of Birth | Leninakan , USSR |
| Date of death | September 13, 2013 (87 years old) |
| Place of death | Saint Petersburg , Russia |
| A country | |
| Scientific field | computational mathematics , hydrothermodynamics |
| Place of work | Institute of Water and Economic Problems, Academy of Sciences of the Armenian SSR , VTs LOMI , LOTsEMI , St. Petersburg Institute of Mathematics , Russian Academy of Sciences , Institute of Lake Science, Russian Academy of Sciences , Leningrad Polytechnic Institute , Leningrad Electrotechnical Institute |
| Alma mater | Irkutsk University , Leningrad University |
| Known as | one of the founders of the FEM |
In the works of Leonard Amayakovich and his students in the period 1963-1980. For linear elliptic equations of the second and fourth order with variable coefficients in regions with a smooth and piecewise-smooth boundary, finite element method schemes and methods for solving them are constructed and investigated. On the basis of the algorithms proposed by L. A. Oganesyan and his students, a package of application programs for solving heat and mass transfer problems was created, which was used by computer centers of various enterprises in Leningrad . The works of L. A. Oganesyan and his students gained wide international fame.
L. A. Hovhannisyan worked in the team of the Leningrad Economic and Mathematical Institute from 1959 to 1985. He is one of the founders of the Institute. From 1964 to 1985 led the laboratory of numerical methods. Under the guidance of L. A. Hovhannisyan, 10 candidate dissertations were defended. Three of his students became doctors of sciences ( G.P. Astrakhantsev , L.A. Rukhovets and Yu. R. Hakobyan).
Literature
- L. A. Oganesyan, L. A. Rukhovets . Variational-difference methods for solving elliptic equations. - Ed. Academy of Sciences of the Armenian SSR, 1979. - 234 p.
Notes
- ↑ Obituary essay on the website of SPb EMP RAS
- ↑ 1 2 V. B. Andreev, G. P. Astrakhantsev, V. P. Dymnikov, L. A. Rukhovets, B. N. Chetverushkin, “In memory of Leonard Ameyakovich Oganesyan (1925–2013)”, J. Comput. mate. and mat. physical , 54: 5 (2014)
- ↑ L. Oganesyan. Numerical calculation of plates // Sat. "The solution of engineering problems on electronic computers", TsBTI, LSNH, 1963. P.85-97.