Tag Archives: Permafrost Soils

Article in the Peer-Reviewed Journal “Applied and Computational Mathematics”

Aug 23, 2013

The article “Consistency of the Douglas–Rachford splitting algorithm for the sum of three nonlinear operators: application to the Stefan problem in permafrost” was published in the peer-reviewed journal Applied and Computational Mathematics Vol. 2, No. 4, August 2013.

Abstract: Consistency of the Douglas–Rachford dimensional splitting scheme is proved for the sum of three nonlinear operators constituting an evolution equation. It is shown that the operators must be densely defined, maximal monotone and single valued on a real Hilbert space in order to satisfy conditions, under which the splitting algorithm can be applied. Numerical experiment conducted for a three-dimensional Stefan problem in permafrost suggests that the Douglas–Rachford scheme produces reasonable results, although the convergence rate remains unestablished.

Numerical experiment, conducted for 3D Stefan problem in permafrost indicates that Douglas-Rachford algorithm gives reliable results, although the convergence rate remains unknown.

XIII Scientific Conference “IT in Engineering”

Apr 15, 2013

Simmakers took part in the XIII scientific conference “Information Technologies in Engineering”, which was held on April 2-4, 2013 in Giprotyumenneftegaz institute, Tyumen.

Representatives of 53 companies from 22 Russian cities and CIS countries took part in the conference, including Bentley Systems, Rosneft NTC, TNK-BP Management, Surgutneftegas, Giprovostokneft, Bashnipineft, Tatnipineft, Tomsknipineft, Tyumennipineft, Ufanipineft, Samaranipineft, etc.

Simmakers representatives presented 2 reports “Software Development for Specific Problems in Oil and Gas Industry” and “Specificity of the Numerical Heat Transfer in the Engineering Problems of Foundations Construction in Permafrost”.