Open Access iconOpen Access

ARTICLE

crossmark

Application of the Fictitious Domain Method for Navier-Stokes Equations

Almas Temirbekov1, Zhadra Zhaksylykova2,*, Yerzhan Malgazhdarov3, Syrym Kasenov1

1 Al-Farabi Kazakh National University, Almaty, Kazakhstan
2 Abai Kazakh National Pedagogical University, Almaty, Kazakhstan
3 Sarsen Amanzholov East Kazakhstan University, Ust-Kamenogorsk, Kazakhstan

* Corresponding Author: Zhadra Zhaksylykova. Email: email

Computers, Materials & Continua 2022, 73(1), 2035-2055. https://doi.org/10.32604/cmc.2022.027830

Abstract

To apply the fictitious domain method and conduct numerical experiments, a boundary value problem for an ordinary differential equation is considered. The results of numerical calculations for different values of the iterative parameter τ and the small parameter ε are presented. A study of the auxiliary problem of the fictitious domain method for Navier-Stokes equations with continuation into a fictitious subdomain by higher coefficients with a small parameter is carried out. A generalized solution of the auxiliary problem of the fictitious domain method with continuation by higher coefficients with a small parameter is determined. After all the above mathematical studies, a computational algorithm has been developed for the numerical solution of the problem. Two methods were used to solve the problem numerically. The first variant is the fictitious domain method associated with the modification of nonlinear terms in a fictitious subdomain. The model problem shows the effectiveness of using such a modification. The proposed version of the method is used to solve two problems at once that arise while numerically solving systems of Navier-Stokes equations: the problem of a curved boundary of an arbitrary domain and the problem of absence of a boundary condition for pressure in physical formulation of the internal flow problem. The main advantage of this method is its universality in development of computer programs. The second method used calculation on a uniform grid inside the area. When numerically implementing the solution on a uniform grid inside the domain, using this method it’s possible to accurately take into account the boundaries of the curved domain and ensure the accuracy of the value of the function at the boundaries of the domain. Methodical calculations were carried out, the results of numerical calculations were obtained. When conducting numerical experiments in both cases, quantitative and qualitative indicators of numerical results coincide.

Keywords


Cite This Article

APA Style
Temirbekov, A., Zhaksylykova, Z., Malgazhdarov, Y., Kasenov, S. (2022). Application of the fictitious domain method for navier-stokes equations. Computers, Materials & Continua, 73(1), 2035-2055. https://doi.org/10.32604/cmc.2022.027830
Vancouver Style
Temirbekov A, Zhaksylykova Z, Malgazhdarov Y, Kasenov S. Application of the fictitious domain method for navier-stokes equations. Comput Mater Contin. 2022;73(1):2035-2055 https://doi.org/10.32604/cmc.2022.027830
IEEE Style
A. Temirbekov, Z. Zhaksylykova, Y. Malgazhdarov, and S. Kasenov "Application of the Fictitious Domain Method for Navier-Stokes Equations," Comput. Mater. Contin., vol. 73, no. 1, pp. 2035-2055. 2022. https://doi.org/10.32604/cmc.2022.027830



cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
  • 1666

    View

  • 757

    Download

  • 0

    Like

Share Link