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  • Open Access

    ARTICLE

    Dynamics along the epithelial-cancer biointerface: Hidden system complexities

    IVANA PAJIC-LIJAKOVIC*, MILAN MILIVOJEVIC

    BIOCELL, Vol.47, No.11, pp. 2321-2334, 2023, DOI:10.32604/biocell.2023.043796

    Abstract The biointerface dynamics influence any cancer spreading through the epithelium since it is documented in the early stages some malignancies (like epithelial cancer). The altered rearrangement of epithelial cells has an impact on the development of cancer. Therefore, it is necessary to comprehend the underlying biological and physical mechanisms of this biointerface dynamics for early suppression of cancer. While the biological mechanisms include cell signaling and gene expression, the physical mechanisms are several physical parameters such as the epithelial-cancer interfacial tension, epithelial surface tension, and compressive stress accumulated within the epithelium. Although the segregation of epithelia-cancer co-cultured systems was widely… More > Graphic Abstract

    Dynamics along the epithelial-cancer biointerface: Hidden system complexities

  • Open Access

    ARTICLE

    AN EXACT SOLUTION ON UNSTEADY MHD VISCOELASTIC FLUID FLOW PAST AN INFINITE VERTICAL PLATE IN THE PRESENCE OF THERMAL RADIATION

    E. Kumaresan, A .G. Vijaya Kumar*

    Frontiers in Heat and Mass Transfer, Vol.8, pp. 1-7, 2017, DOI:10.5098/hmt.8.9

    Abstract A study has been carried out to analyse an unsteady free convective chemically reacting, MHD Visco-elastic fluid (Walter’s liquid-B model) flow past an infinite vertical plate in the presence of thermal radiation with uniform temperature and species diffusion. The dimensionless governing partial differential equations are solved by using Laplace transform technique. The effects of different physical parameters like visco-elastic parameter, chemical reaction parameter, Magnetic field parameter, thermal Grashof number, mass Grashof number and time are discussed by plotting the velocity profiles for both cooling  (Gr >0, Gm > 0) and heating of the plate (Gr < 0, Gm <… More >

  • Open Access

    ARTICLE

    CHEMICALLY REACTIVE VISCOELASTIC FLUID FLOW IN PRESENCE OF NANO PARTICLE THROUGH POROUS STRETCHING SHEET

    S. M. Arifuzzaman1,* , Md. Shakhaoath Khan2 , Khan Enaet Hossain1 , Md. Sirajul Islam3 , Sonia Akter3, Raju Roy1

    Frontiers in Heat and Mass Transfer, Vol.9, pp. 1-12, 2017, DOI:10.5098/hmt.9.5

    Abstract Present study concerned with the theoretical work with numerical investigation of MHD transient naturally convective and higher order chemically reactive viscoelastic fluid with nano-particle flow through a vertical porous stretching sheet with the effects of heat generation and radiation absorption. A boundary layer approximation is carried out to develop a flow model representing time dependent momentum, energy, and concentration equations. The governing model equations in partial differential equations (PDEs) form were transformed into a set of nonlinear ordinary differential equation (ODEs) by using non-similar technique. Explicit Finite Difference Method (EFDM) was employed by implementing an algorithm in Compaq Visual Fortran… More >

  • Open Access

    ARTICLE

    NUMERICAL SIMULATION OF SLIP INFLUENCE ON ELECTRIC CONDUCTING VISCOELASTIC FLUID PAST AN ISOTHERMAL CYLINDER

    CH. Amanullaa,b,*, N. Nagendrab , M. Suryanarayana Reddyc

    Frontiers in Heat and Mass Transfer, Vol.10, pp. 1-13, 2018, DOI:10.5098/hmt.10.10

    Abstract The present study deals with the computational analysis on an electrically conducting magneto viscoelastic fluid over a circular cylinder. Prescribed partial slip effects are also taken into account. The governing physical problem is tackled numerically by using the highly efficient and reliable Keller box algorithm. Impact of sundry physical parameters on physical quantities of interest are evaluated. The influence of Williamson viscoelastic fluid parameter, magnetic body force parameter, Thermal and velocity (hydrodynamic) slip parameters, stream wise variable and Prandtl number on thermos-fluid characteristics are studied graphically. The model is relevant to the simulation of magnetic polymer materials processing. More >

  • Open Access

    ARTICLE

    UNSTEADY BOUNDARY LAYER FLOW AND HEAT TRANSFER OF MAXWELL VISCOELASTIC FLUID WITH TIME FRACTIONAL CATTANEO-CHRISTOV HEAT FLUX MODEL

    Mengchen Zhanga , Hui Chenb,*, Ming Shena

    Frontiers in Heat and Mass Transfer, Vol.11, pp. 1-7, 2018, DOI:10.5098/hmt.11.21

    Abstract The time fractional Cattaneo-Christov flux heat model is first introduced to investigate the flow and heat transfer of Maxwell viscoelastic fluid past a vertical flat plate. Fractional constitutive relation and Cattaneo-Christov heat flux model are applied to construct the governing boundary layer equations of momentum and energy, which are nondimensionalized by new dimensionless variables and solved numerically. The results indicate that there exist intersections on velocity and temperature profiles for different values of Prandtl number when the fractional Cattaneo-Christov flux heat model is considered. More >

  • Open Access

    ARTICLE

    GENERALIZED MAGNETO- THERMOELASTICITY AND HEAT CONDUCTION ON AN INFINITE MEDIUM WITH SPHERICAL CAVITY

    Mahmoud A. Ismaila, Shadia Fathi Mohamed El Sherif a , A. A. El-Baryb,*, Hamdy M. Youssefc

    Frontiers in Heat and Mass Transfer, Vol.14, pp. 1-7, 2020, DOI:10.5098/hmt.14.3

    Abstract In this paper we will discuss the problem of distribution of thermal stresses and temperature in a generalized magneto–thermo-viscoelastic solid spherical cavity of radius R according to Green- Naghdi (G-N II) and (G-N III) theory. The surface of the cavity is assumed to be free traction and subjected to a constant thermal shock. The Laplace transform technique is used to solve the problem. The state space approach is adopted for the solution of one dimensional problem. Solution of the problem in the physical domain are obtained by using a numerical method of MATLAP Programmer and the expression for the temperature,… More >

  • Open Access

    ARTICLE

    SEEBECK EFFECT IN GENERALIZED MAGNETO-THERMO VISCOELASTIC SPHERICAL REGION

    Alaa K. Khamisa , Allal Bakalia, A. A. El-Baryb,c,*, Haitham M. Atefd

    Frontiers in Heat and Mass Transfer, Vol.15, pp. 1-6, 2020, DOI:10.5098/hmt.15.24

    Abstract In this paper the effect of the magnetic field and Seebeck parameter was investigated. Modified Ohm's law that includes effects of the temperature gradient (Seebeck effect More >

  • Open Access

    ARTICLE

    Response Spectrum Analysis of 7-story Assembled Frame Structure with Energy Dissipation System

    Jin Zhao, Yi Wang*, Zhengwei Ma

    Structural Durability & Health Monitoring, Vol.17, No.2, pp. 159-173, 2023, DOI:10.32604/sdhm.2023.09601

    Abstract Viscoelastic damper is an effective passive damping device, which can reduce the seismic response of the structure by increasing the damping and dissipating the vibration energy of structures. It has a wide application prospect in actual structural vibration control because of simple device and economical material. In view of the poor seismic behaviors of assembled frame structure connections, various energy dissipation devices are proposed to improve the seismic performance. The finite element numerical analysis method is adopted to analyze relevant energy dissipation structural parameters. The response spectrum of a 7-story assembled frame structure combined the ordinary steel support, ordinary viscoelastic… More >

  • Open Access

    ARTICLE

    RADIATION AND CHEMICAL REACTION EFFECTS ON UNSTEADY VISCOELASTIC FLUID FLOW THROUGH POROUS MEDIUM

    Bamdeb Deya,† , Bhrigu Kumar Kalitab, Rita Choudhuryb

    Frontiers in Heat and Mass Transfer, Vol.18, pp. 1-8, 2022, DOI:10.5098/hmt.18.32

    Abstract In this paper, we attempt to analyze the effects of radiation and chemical reactions on laminar boundary layer flow of an electrically conducting unsteady viscoelastic incompressible fluid flow along a vertical semi-infinite plate passing through porous channel. The coupled nonlinear partial differential equations for energy, momentum, and mass diffusions are solved analytically with the use of perturbation technique. Moreover, the analytical expressions for fluid velocity, temperature, and concentration distributions are obtained and interpreted using the software MATLAB. The enhancement of velocity is prominent with the growth of Gr, Gm, Nr and Kr but a reverse pattern is observed with the… More >

  • Open Access

    ARTICLE

    Computational-Analysis of the Non-Isothermal Dynamics of the Gravity-Driven Flow of Viscoelastic-Fluid-Based Nanofluids Down an Inclined Plane

    Idrees Khan1,2, Tiri Chinyoka1,2,*, Andrew Gill3

    FDMP-Fluid Dynamics & Materials Processing, Vol.19, No.3, pp. 767-781, 2023, DOI:10.32604/fdmp.2022.021921

    Abstract The paper explores the gravity-driven flow of the thin film of a viscoelastic-fluid-based nanofluids (VFBN) along an inclined plane under non-isothermal conditions and subjected to convective cooling at the free-surface. The Newton’s law of cooling is used to model the convective heat-exchange with the ambient at the free-surface. The Giesekus viscoelastic constitutive model, with appropriate modifications to account for non-isothermal effects, is employed to describe the polymeric effects. The unsteady and coupled non-linear partial differential equations (PDEs) describing the model problem are obtained and solved via efficient semi-implicit numerical schemes based on finite difference methods (FDM) implemented in Matlab. The… More >

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