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JOURNALS // Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki // Archive

Zh. Vychisl. Mat. Mat. Fiz., 2024 Volume 64, Number 8, Pages 1437–1444 (Mi zvmmf11811)

General numerical methods

An approach to improving the accuracy and efficiency of the ROMB method for solving the nonstationary heat equation

N. Ya. Moiseev

Russian Federal Nuclear Center–Zababakhin All-Russia Research Institute of Technical Physics, 456770, Snezhinsk, Chelyabinsk oblast, Russia

Abstract: A modification of the ROMB method for the numerical solution of nonstationary nonlinear heat equations is presented. The modified difference schemes are conservative and, on smooth solutions, provide a second-order approximation in time and space for model differential equations with constant coefficients. For the modified difference schemes, the first differential approximations are given, which make it possible to estimate the truncation errors of the schemes.

Key words: nonstationary nonlinear heat equation, predictor–corrector difference schemes, ROMB method.

UDC: 519.634

Received: 02.04.2024
Revised: 02.04.2024
Accepted: 05.05.2024

DOI: 10.31857/S0044466924080084


 English version:
Computational Mathematics and Mathematical Physics, 2024, 64:8, 1747–1754

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© Steklov Math. Inst. of RAS, 2026