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    Wyświetlanie 1-5 z 5
    Tytuł:
    Radiation effects on oscillating vertical plate with uniform heat and mass flux
    Autorzy:
    Chandrakala, P.
    Narayana Bhaskar, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/264784.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    promieniowanie
    strumień ciepła
    strumień masy
    oscillating vertical plate
    radiation
    heat and mass flux
    Opis:
    Thermal radiation effects on flow past an impulsively started infinite vertical oscillating plate with uniform heat and mass flux is studied. The fluid considered here is a gray, absorbing-emitting radiation but a nonscattering medium. The dimensionless governing equations are solved using the Laplace-transform technique. The velocity, temperature and concentration are studied for different physical parameters such as the radiation parameter, phase angle, Schmidt number and time. The variation of the skin-friction for different values of the parameters is also shown in a table.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2013, 18, 3; 643-652
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical study on flow past an oscillating plate with variable temperature and uniform mass diffusion under chemical reaction
    Autorzy:
    Vijayalakshmi, A. R.
    Selvajayanthi, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/955172.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    reakcja chemiczna
    wymiana ciepła
    dyfuzja masy
    chemical reaction
    oscillating vertical plate
    heat transfer
    mass diffusion
    Opis:
    An numerical study on an unsteady flow past an oscillating semi-infinite vertical plate with variable temperature and uniform mass diffusion under the influence of a first order chemical reaction has been carried out. The dimensionless governing equations are solved by an unconditionally stable and fast converging implicit finite difference scheme. The effects of velocity and temperature for different physical parameters such as the chemical reaction parameter, thermal Grashof number, mass Grashof number and time are analysed. It is observed that due to the presence of first order chemical reaction, the velocity increases during a generative reaction and decreases in a destructive reaction.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2014, 19, 1; 181-193
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Stress state of plate with incisions under the action of oscillating concentrated forces
    Autorzy:
    Shvabyuk, V.
    Sulym, H.
    Mikulich, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/386728.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    stress state
    plate with hole
    plate with incisions
    incision
    hole
    dynamic stresses
    oscillating concentrated forces
    stan naprężenia
    naprężenia dynamiczne
    siła skupiona oscylująca
    Opis:
    This paper proposes the novel technique for analysis of dynamic stress state of multi-connected infinite plates under the action of oscillating forces. Calculation of dynamic stresses at the incisions of plates is held using the boundary-integral equation method and the theory of complex variable functions. The numerical implementation of the developed algorithmis based on the method of mechanical quadratures and collocation technique. The algorithm is effective in the analysis of the stress state caused by steady-state vibrations of plates.
    Źródło:
    Acta Mechanica et Automatica; 2015, 9, 3; 140-144
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Thermal radiation and chemical reaction effects on unsteady magnetohydrodynamic third grade fluid flow between stationary and oscillating plates
    Autorzy:
    Idowu, A. S.
    Sani, U.
    Powiązania:
    https://bibliotekanauki.pl/articles/265001.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    przepływ Couette'a
    przepływ magnetohydrodynamiczny
    promieniowanie cieplne
    reakcja chemiczna
    third grade fluid
    plane Couette
    Couette-Poiseuille flow
    magnetohydrodynamic flow
    stationary and oscillating plate
    thermal radiation
    chemical reaction
    Opis:
    An analysis was carried out for an unsteady magnetohydrodynamic (MHD) flow of a generalized third grade fluid between two parallel plates. The fluid flow is a result of the plate oscillating, moving and pressure gradient. Three flow problems were investigated, namely: Couette, Poiseuille and Couette-Poiseuille flows and a number of nonlinear partial differential equations were obtained which were solved using the He-Laplace method. Expressions for the velocity field, temperature and concentration fields were given for each case and finally, effects of physical parameters on the fluid motion, temperature and concentration were plotted and discussed. It is found that an increase in the thermal radiation parameter increases the temperature of the fluid and hence reduces the viscosity of the fluid while the concentration of the fluid reduces as the chemical reaction parameter increases.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2019, 24, 2; 269-293
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Newtonian heating effect on heat absorbing unsteady MHD radiating and chemically reacting free convection flow past an oscillating vertical porous plate
    Autorzy:
    Prabhakar Reddy, B.
    Makinde, O. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2174166.pdf
    Data publikacji:
    2022
    Wydawca:
    Uniwersytet Zielonogórski. Oficyna Wydawnicza
    Tematy:
    magnetohydrodynamika
    promieniowanie
    reakcja chemiczna
    Newtonian heating
    radiation parameter
    chemical reaction rate
    oscillating plate
    heat absorption parameter
    Opis:
    In this article, we have discussed in detail the effect of Newtonian heating on MHD unsteady free convection boundary layer flow past an oscillating vertical porous plate embedded in a porous medium with thermal radiation, chemical reaction and heat absorption. The governing PDEs of the model together with related initial and boundary conditions have been solved numerically by the finite element method. The dimensionless velocity, temperature and concentration profiles are analyzed graphically due to the effects of key parameters in the concerned model problem. Computed results for the skin friction coefficient, Nusselt number and Sherwood number are put in tabular form. It is observed that the thermal and mass buoyancy effects support the velocity whilst a reverse effect is noticed when the strength of the magnetic field is increased. The velocity and temperature enhances with an increase in the Newtonian heating and thermal radiation whilst a reverse effect is observed with an increase in the Prandtl number and heat absorption parameter. Increasing Schmidt number and chemical reaction parameter tends to depreciate both velocity and concentration. The Newtonian heating, thermal radiation and magnetic field tends to decrease in the skin friction. The Nusselt number increases with increasing Newtonian heating and heat absorption parameters. An increase in the Schmidt number and chemical reaction rate tends to improve the Sherwood number.
    Źródło:
    International Journal of Applied Mechanics and Engineering; 2022, 27, 1; 168--187
    1734-4492
    2353-9003
    Pojawia się w:
    International Journal of Applied Mechanics and Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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