A linear and nonlinear stability analysis of a viscoelastic fluid in a porous medium layer saturated by a nanofluid with thermal conductivity and viscosity dependent on the nanoparticle volume fraction is studied. To simulate the momentum equation in porous media, a modified Darcy model has been used. To describe the rheological behavior of viscoelastic nanofluids, an Oldroyd-B type constitutive equation has been used. The onset criterion for stationary and oscillatory convection is derived analytically. The nonlinear theory based on the truncated representation of Fourier series method is used to find the transient heat and mass transfer.

References

1.
Hussein
,
A. M.
,
Sharma
,
K. V.
,
Bakar
,
R. A.
, and
Kadirgama
,
K.
,
2014
, “
A Review of Forced Convection Heat Transfer Enhancement and Hydrodynamic Characteristics of a Nanofluid
,”
Renewable Sustainable Energy Rev.
,
29
, pp.
734
743
.
2.
Dalkilica
,
A. S.
,
Kayacıa
,
N.
,
Celena
,
A.
,
Tabatabaeia
,
M.
,
Yıldıza
,
O.
,
Daungthongsukb
,
W.
, and
Wongwisesc
,
S.
,
2012
, “
Forced Convective Heat Transfer of Nanofluids—A Review of the Recent Literature
,”
Curr. Nanosci.
,
8
(
6
), pp.
949
969
.
3.
Nield
,
D. A.
, and
Kuznetsov
,
A. V.
,
2009
, “
Thermal Instability in a Porous Medium Layer Saturated by a Nanofluid
,”
Int. J. Heat Mass Transfer
,
52
(1), pp.
5796
5801
.
4.
Kuznetsov
,
A. V.
, and
Nield
,
D. A.
,
2010
, “
Thermal Instability in a Porous Medium Layer Saturated by a Nanofluid: Brinkman Model
,”
Transp. Porous Media
,
81
(
3
), pp.
409
422
.
5.
Kuznetsov
,
A. V.
, and
Nield
,
D. A.
,
2010
, “
Effect of Local Thermal Non-Equilibrium on the Onset of Convection in a Porous Medium Layer Saturated by a Nanofluid
,”
Transp. Porous Media
,
83
(
2
), pp.
425
436
.
6.
Kuznetsov
,
A. V.
, and
Nield
,
D. A.
,
2010
, “
The Onset of Double-Diffusive Nanofluid Convection in a Layer of a Saturated Porous Medium
,”
Transp. Porous Media
,
85
(
3
), pp.
941
951
.
7.
Nield
,
D. A.
, and
Kuznetsov
,
A. V.
,
2012
, “
The Onset of Convection in a Layer of a Porous Medium Saturated by a Nanofluid: Effects of Conductivity and Viscosity Variation and Cross-Diffusion
,”
Transp. Porous Media
,
92
(
3
), pp.
837
846
.
8.
Umavathi
,
J. C.
, and
Mohite
,
M. B.
,
2014
, “
Double-Diffusive Convective Transport in a Nanofluid-Saturated Porous Layer With Cross Diffusion and Variation of Viscosity and Conductivity
,”
Heat Transfer Asian Res.
,
43
(
7
), pp.
628
652
.
9.
Buongiorno
,
J.
,
2006
, “
Convective Transport in Nanofluids
,”
ASME J. Heat Transfer
,
128
(
3
), pp.
240
250
.
10.
Nield
,
D. A.
, and
Kuznetsov
,
A. V.
,
2011
, “
The Onset of Double-Diffusive Convection in a Nanofluid Layer
,”
Int. J. Heat Fluid Flow
,
32
(
4
), pp.
771
776
.
11.
Nield
,
D. A.
, and
Kuznetsov
,
A. V.
,
2010
, “
The Onset of Convection in a Horizontal Nanofluid Layer of Finite Depth
,”
Eur. J. Mech., B: Fluids
,
29
(
3
), pp.
217
223
.
12.
Nield
,
D. A.
, and
Kuznetsov
,
A. V.
,
2014
, “
The Onset of Convection in a Horizontal Nanofluid Layer of Finite Depth: A Revised Model
,”
Int. J. Heat Mass Transfer
,
77
, pp.
915
918
.
13.
Vest
,
C. M.
, and
Arpaci
,
V. S.
,
1969
, “
Over Stability of a Viscoelastic Fluid Layer Heated From Below
,”
J. Fluid Mech.
,
36
(
03
), pp.
613
623
.
14.
Sokolov
,
M.
, and
Tanner
,
R. I.
,
1972
, “
Convective Stability of a General Viscoelastic Fluid Heated From Below
,”
Phys. Fluids
,
15
(
4
), pp.
534
539
.
15.
Rosenblat
,
S.
,
1986
, “
Thermal Convection of a Viscoelastic Fluid
,”
J. Non-Newtonian Fluid Mech.
,
21
(
2
), pp.
201
223
.
16.
Martinez-Mardones
,
J.
, and
Perez-Garcia
,
C.
,
1990
, “
Linear Instability in Viscoelastic Fluid Convection
,”
J. Phys.: Condens. Matter
,
2
(
5
), pp.
1281
1290
.
17.
Martinez-Mardones
,
J.
, and
Perez-Garcia
,
C.
,
1992
, “
Bifurcation Analysis and Amplitude Equations for Viscoelastic Convective Fluids
,”
II Nuovo Cimento
,
14
(
9
), pp.
961
975
.
18.
Larson
,
R. G.
,
1992
, “
Instabilities in Viscoelastic Flows
,”
Rheol. Acta
,
31
(
3
), pp.
213
221
.
19.
Li
,
Z.
, and
Khayat
,
R. E.
,
2005
, “
Three-Dimensional Thermal Convection of Viscoelastic Fluids
,”
Phys. Rev. E
,
71
(
6
), p.
066305
.
20.
Phillips
,
T. N.
, and
Williams
,
A. J.
,
2002
, “
Comparison of Creeping and Inertial Flow of an Oldroyd-B Fluid Through Planar and Axisymmetric Contractions
,”
J. Non-Newtonian Fluid Mech.
,
108
(1–3), pp.
25
47
.
21.
Alves
,
M. A.
,
Oliveira
,
P. J.
, and
Pinho
,
F. T.
,
2003
, “
Benchmark Solutions for the Flow of Oldroyd-B and PTT Fluids in Planar Contractions
,”
J. Non-Newtonian Fluid Mech.
,
110
(
1
), pp.
45
75
.
22.
Lozinski
,
A.
, and
Owens
,
R. G.
,
2003
, “
An Energy Estimate for the Oldroyd-B Model: Theory
,”
J. Non-Newtonian Fluid Mech.
,
112
(2–3), pp.
161
176
.
23.
Tiwari
,
R. K.
, and
Das
,
M. K.
,
2007
, “
Heat Transfer Augmentation in a Two-Sided Lid-Driven Differentially Heated Square Cavity Utilizing Nanofluids
,”
Int. J. Heat Mass Transfer
,
50
(9–10), pp.
2002
2018
.
24.
Brinkman
,
H. C.
,
1952
, “
The Viscosity of Concentrated Suspensions and Solutions
,”
J. Chem. Phys.
,
20
(
4
), pp.
571
581
.
25.
Maxwell
,
J. C.
,
1904
,
A Treatise on Electricity and Magnetism
, 2nd ed.,
Oxford University Press
,
Oxford, UK
.
26.
Nield
,
D. A.
,
2008
, “
General Heterogeneity Effects on the Onset of Convection in a Porous Medium
,”
Emerging Topics in Heat and Mass Transfer in Porous Media
,
P.
Vadász
, ed.,
Springer
,
New York
, pp.
63
84
.
27.
Horton
,
C. W.
, and
Rogers
,
F. T.
,
1945
, “
Convection Currents in a Porous Medium
,”
J. Appl. Phys.
,
6
(
16
), pp.
367
370
.
28.
Lapwood
,
E. R.
,
1948
, “
Convection of a Fluid in a Porous Medium
,”
Proc. Cambridge Philos. Soc.
,
44
(
04
), pp.
508
521
.
29.
Sheu
,
L. J.
,
2011
, “
Thermal Instability in a Porous Medium Layer Saturated With a Viscoelastic Nanofluid
,”
Transp. Porous Media
,
88
(
3
), pp.
461
477
.
30.
Umavathi
,
J. C.
, and
Mohite
,
M. B.
,
2016
, “
Convective Transport in a Porous Medium Layer Saturated With a Maxwell Nanofluid
,”
J. King Saud Univ., Eng. Sci.
,
28
(
1
), pp.
56
68
.
31.
Malashetty
,
M. S.
,
Swamy
,
M. S.
, and
Sidram
,
W.
,
2011
, “
Double Diffusive Convection in a Rotating Anisotropic Porous Layer Saturated With Viscoelastic Fluid
,”
IJTS
,
50
(
9
), pp.
1757
1769
.
32.
Bhadauria
,
B. S.
, and
Agarwal
,
S.
,
2011
, “
Natural Convection in a Nanofluid Saturated Rotating Porous Layer: A Nonlinear Study
,”
Transp. Porous Media
,
87
(
2
), pp.
585
602
.
33.
Agarwal
,
S.
,
Bhadauria
,
B. S.
,
Sacheti
,
N. C.
,
Chandran
,
P.
, and
Singh
,
A. K.
,
2012
, “
Non-Linear Convective Transport in a Binary Nanofluid Saturated Porous Layer
,”
Transp. Porous Media
,
93
(
1
), pp.
29
49
.
You do not currently have access to this content.