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
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 the porous space. Binary chemical reaction is entertained. Resulting
system is n...
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
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.
Predictions of swirling flow in sudden‐expansion dump combustor with flameholder side‐inlet using two‐step combustion model
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 9 Số 7 - Trang 764-787 - 1999
The swirling flow of sudden‐expansion dump combustor with central V‐gutter
flameholder and six side‐inlets is studied by employing the SIMPLE‐C algorithm
and Jones‐Launder k‐ε two‐equation turbulent model. Both combustion models of
one‐step with infinite chemical reaction rate and two‐step with finite chemical
reaction rate of eddy‐breakup (EBU) model are used to solve the present problem.
The res...
A new PCA‐ANN algorithm for retrieval of rainfall structure in a precipitating atmosphere
International Journal of Numerical Methods for Heat and Fluid Flow - - 2011
PurposeThe purpose of this paper is to develop an algorithm, using PCA‐based
neural network, to retrieve the vertical rainfall structure in a precipitating
atmosphere. The algorithm is powered by a rigorous solution to the plane
parallel radiative transfer equation for the atmosphere with thermodynamically
consistent vertical profiles of humidity, temperature and cloud structures,
together with “m...
Energetic-exergetic analysis of an air handling unit to reduce energy consumption by a novel creative idea
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 29 Số 10 - Trang 3959-3975 - 2019
Purpose This study aims to simulate the flow and heat transfer through an air
handling unit to reduce its energy consumption by a novel creative idea of using
an air-to-air heat exchanger. Design/methodology/approach To do this, both first
and second laws of thermodynamics energy and exergy balance equations were
solved numerically by an appropriate developed computer code. Findings Using the
air-...
Flow pattern transition of natural convection in a horizontal annulus with constant heat flux on the inner wall
International Journal of Numerical Methods for Heat and Fluid Flow - - 2005
PurposeThis study considers the natural convection in a horizontal annulus with
constant heat flux on the inner cylinder, and investigates the transition of
flows for various Prandtl numbers.Design/methodology/approachThe
streamfunction‐vorticity equation and the energy equation governing the flow and
temperature field are solved with finite difference method.FindingsResults are
presented to show ...
Numerical study of natural convective heat transfer with large temperature differences
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 11 Số 4 - Trang 329-341 - 2001
Study of the wave‐breaking's qualitative behavior of the Fornberg‐Whitham equation via quasi‐numeric approaches
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 22 Số 5 - Trang 537-553 - 2012
PurposeThis paper aims to show that the variational iteration method (VIM) and
the homotopy perturbation method (HPM) are powerful and suitable methods to
solve the Fornberg‐Whitham equation.Design/methodology/approachUsing HPM the
explicit exact solution is calculated in the form of a quickly convergent series
with easily computable components. Also, by using VIM the analytical results of
this eq...
Numerical study and POD snapshot analysis of flow characteristics for pulsating turbulent opposing jets
International Journal of Numerical Methods for Heat and Fluid Flow - Tập 29 Số 6 - Trang 2009-2031 - 2019
Purpose The purpose of this study is to investigate the coherent structures of
pulsed opposing jets by large eddy simulation (LES) model and proper orthogonal
decomposition (POD) snapshot method. Flow pulsation as an active flow control
method is considered for the enhancement of transport phenomena in impinging
jets. The effect of flow pulsation parameters such as pulsation signal shape and
frequ...
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
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
equations...
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