Results 1 to 10 of about 1,325,975 (331)

A parabolic-hyperbolic free boundary problem modeling tumor growth with drug application

open access: greenElectronic Journal of Differential Equations, 2010
In this article, we study a free boundary problem modeling the growth of tumors with drug application. The model consists of two nonlinear second-order parabolic equations describing the diffusion of nutrient and drug concentration, and three ...
Ji-Hong Zhao
doaj   +1 more source

Free boundary problem for predator-prey model [PDF]

open access: yesE3S Web of Conferences, 2023
In this article, we study the behavior of two species evolving in a domain with a free boundary. This system mimics the spread of invasive or new predator species, in which free boundaries represent the expanding fronts of predator species and are ...
Elmurodov Alimardon   +4 more
doaj   +1 more source

Properties of the free boundary near the fixed boundary of the double obstacle problems

open access: yesBulletin of Mathematical Sciences, 2022
In this paper, we study the tangential touch and [Formula: see text] regularity of the free boundary near the fixed boundary of the double obstacle problem for Laplacian and fully nonlinear operator.
Jinwan Park
doaj   +1 more source

Asymptotic Behavior of Solutions to Free Boundary Problem with Tresca Boundary Conditions

open access: yesJournal of Function Spaces, 2021
In this paper, we study the asymptotic behavior of an incompressible Herschel-Bulkley fluid in a thin domain with Tresca boundary conditions. We study the limit when the ε tends to zero, we prove the convergence of the unknowns which are the velocity and
Abdelkader Saadallah   +5 more
doaj   +1 more source

Local Well-Posedness for Free Boundary Problem of Viscous Incompressible Magnetohydrodynamics

open access: yesMathematics, 2021
In this paper, we consider the motion of incompressible magnetohydrodynamics (MHD) with resistivity in a domain bounded by a free surface. An electromagnetic field generated by some currents in an external domain keeps an MHD flow in a bounded domain. On
Kenta Oishi, Yoshihiro Shibata
doaj   +1 more source

Regularity results for a quasilinear free boundary problem

open access: yesMathematical Modelling and Analysis, 2020
In this paper we prove local interior and boundary Lipschitz continuity of the solutions of a quasilinear free boundary problem. We also show that the free boundary is the union of graphs of lower semi-continuous functions.
Samia Challal, Abdeslem Lyaghfouri
doaj   +1 more source

On a Multistable Type of Free Boundary Problem with a Flux at the Boundary

open access: yesAdvances in Mathematical Physics, 2023
This paper studies the free boundary problem of a multistable equation with a Robin boundary condition, which may be used to describe the spreading of the invasive species with the solution representing the density of species and the free boundary ...
Haitao Ren, Jingjing Cai, Li Xu
doaj   +1 more source

Regularity in a one-phase free boundary problem for the fractional Laplacian [PDF]

open access: yes, 2011
For a one-phase free boundary problem involving a fractional Laplacian, we prove that "flat free boundaries" are $C^{1,\alpha}$. We recover the regularity results of Caffarelli for viscosity solutions of the classical Bernoulli-type free boundary problem
Alt   +15 more
core   +3 more sources

Analysis of a multiphase free boundary problem [PDF]

open access: yesOpuscula Mathematica
In this paper, we investigate a free boundary problem relevant in several applications, such as tumor growth models. Our problem is expressed as an elliptic equation involving discontinuous nonlinearities in a specified domain with a moving boundary.
Ahlem Abdelouahab, Sabri Bensid
doaj   +1 more source

Existence of solution of a free boundary problem for reaction-diffusion systems

open access: yesСовременная математика: Фундаментальные направления, 2022
In this paper, we prove the existence of solution of a novel free boundary problem for reaction-diffusion systems describing growth of biological tissues due to cell influx and proliferation.
G. A. Younes   +2 more
doaj   +1 more source

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