International Journal of Numerical Methods for Heat and Fluid Flow

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Three-dimensional rotating Darcy–Forchheimer flow with activation energy
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 29 Số 3 - Trang 935-948 - 2019
Sadia Rashid, Tasawar Hayat, Sumaira Qayyum, M. Ayub, Jinde Cao
Purpose The purpose of this study is to study flow caused by rotating frame. Effects of Darcy–Forchheimer and porous medium are considered to study velocity field. Concentration field is discussed in presence of activation energy. Darcy–Forchheimer in a rotating frame is examined. Flow because of stretched sheet fills t...... hiện toàn bộ
Formulation and experiments with high‐order compact schemes for nonuniform grids
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 8 Số 3 - Trang 288-303 - 1998
W.F.Spotz
Considers the extension of a new class of higher‐order compact methods to nonuniform grids and examines the effect of pollution that arises with differencing the associated metric coefficients. Numerical studies for the standard model convection diffusion equation in 1D and 2D are carried out to validate the convergence behaviour and demonstrate the high‐order accuracy.
FEM PREDICTIONS FOR TWO‐PHASE FLOW IN A VERTICAL PIPE WITHOUT THE USE OF ANY EXTERNAL CORRELATIONS
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 3 Số 6 - Trang 565-575 - 1993
K.V.PRASHANTH, K.N.SEETHARAMU
A mathematical model is developed for the description of the thermohydraulics of the two‐phase flow phenomenon in a vertical pipe. Using an additional momentum equation for the slip velocity, it is shown that the computation of slip and pressure drop from the model equations is possible without the use of any external correlations. The finite element method is used to solve the governing e...... hiện toàn bộ
Finite element analysis of a bubble absorber
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 7 Số 7 - Trang 737-750 - 1997
K.S.Sujatha, A.Mani, S.Srinivasa Murthy
Develops a fine element method employing Galerkin’s approach for the analysis of a vertical tubular bubble absorber working with R22‐DMF as working fluid. Aims to provide an understanding of the absorption process which helps in the design of bubble absorbers. Numerical experiments have also been carried out with ammonia‐water combination for the sake of comparison with the results in the ...... hiện toàn bộ
HYDRODYNAMIC AND THERMAL ANALYSIS OF RIVULET FLOW DOWN A VERTICAL SOLID SURFACE
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 1 Số 1 - Trang 63-76 - 1991
KAMEL M.AL‐KHALIL, THEO G.KEITH, KENNETH J.DE WITT
Numerical study of turbulent channel flow with strong temperature gradients
International Journal of Numerical Methods for Heat and Fluid Flow - - 2008
BamdadLessani, Miltiadis V.Papalexandris
PurposeThis paper sets out to perform a detailed numerical study of turbulent channel flow with strong temperature gradients using large‐eddy simulations.Design/methodology/approachA recently developed time‐accurate algorithm base...... hiện toàn bộ
Fast transient solution of a two‐layered counter‐flow microchannel heat sink
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 19 Số 5 - Trang 595-616 - 2009
S.L.Beh, K.‐K.Tio, G.A.Quadir, K.N.Seetharamu
NATURAL CONVECTION IN PARTITIONED ENCLOSURES WITH LOCALIZED HEATING
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 3 Số 2 - Trang 133-143 - 1993
E.NTIBARUFATA, M.HASNAOUI, E.BILGEN, P.VASSEUR
The aim of the present investigation was to study numerically the natural convection in partitioned enclosures with localized heating from below. Two‐dimensional equations of conservation of mass, momentum and energy, with the Boussinesq approximation are solved using finite difference method. Various geometrical parameters were: aspect ratio A = 0.4−0.6, isothermal surface length B = 0.5,...... hiện toàn bộ
Integral transformation of elliptic problems within irregular domains
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 7 Số 8 - Trang 778-793 - 1997
Fausto A.A.Barbuto, RenatoMachado Cotta
Employs the integral transform method in the hybrid numerical‐analytical solution of fully developed laminar flow within a class of irregularly shaped ducts, with respect to the co‐ordinate system chosen to represent the geometry under consideration. A quite general formulation of a two‐dimensional steady‐state diffusion problem is initially considered, and a formal solution is provided. T...... hiện toàn bộ
A second order splitting algorithm for thermally‐driven flow problems
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 6 Số 2 - Trang 51-60 - 1996
P.D.Minev, F.N.VAN De Vosse, L.J.P.Timmermans, A.A.Van Steenhoven
A splitting technique for solutions of the Navier—Stokes and the energy equations, in Boussinesq approximately, is presented. The equations are first integrated in time using a splitting procedure and then discretized spatially by means of a high‐order spectral element method. The whole technique is validated on the flow in a differentially‐heated cavity at intermediate and transitional Ra...... hiện toàn bộ
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