magazinelogo

Journal of Applied Mathematics and Computation

ISSN Online: 2576-0653 Downloads: 226571 Total View: 2258826
Frequency: quarterly ISSN Print: 2576-0645 CODEN: JAMCEZ
Email: jamc@hillpublisher.com
Article Open Access http://dx.doi.org/10.26855/jamc.2023.12.003

Convection in the Earth-like Mantle with the Influence of Strong Viscosity Variation

H. Goni, F. Khanom, T. S. Khaleque*

Department of Applied Mathematics, University of Dhaka, Dhaka, Bangladesh.

*Corresponding author: T. S. Khaleque

Published: December 31,2023

Abstract

A unit aspect-ratio Rayleigh-Bénard convection model that represents the Earth’s mantle is considered to strongly variable viscosity, internal heating, and viscous dissipation. Investigation of the convection pattern at high Rayleigh number with mixed convection, substantial viscosity change across the mantle depth, and viscous dissipation is the primary goal of this study. The model is solved with temperature-dependent, and temperature- and pressure-dependent Arrhenius full form of viscosity function using finite element method. The numerical values of heat transfer rate, i.e. Nusselt number and root mean square velocity are tabulated. The results of the simulation are shown in the temperature distribution and streamline contour figures. The tables and figures reveal that narrower convective cells are preferred for convection when internal heating and dissipation are strong enough. It is also found that the inclusion of internal heating and increase of viscous pressure number make the convection stronger whereas viscous dissipation weakens the vigor of convection.

References

[1] DL Turcotte and ER Oxburgh. Finite amplitude convective cells and continental drift. Journal of Fluid Mechanics, 28(1):29-42, 1967.

[2] Diana Valencia, Richard J O’Connell, and Dimitar Sasselov. Internal structure of massive terrestrial planets. Icarus, 181(2):545-554, 2006.

[3] Diana Valencia, Richard J O’connell, and Dimitar D Sasselov. Inevitability of plate tectonics on super-earths. The Astrophysical Journal, 670(1):L45, 2007.

[4] Diana Valencia and Richard J O’Connell. Convection scaling and subduction on earth and super-earths. Earth and Planetary Science Letters, 286(3-4):492–502, 2009.

[5] S Morris and D Canright. A boundary-layer analysis of benard convection in a fluid of strongly temperature-dependent viscosity. Physics of the Earth and planetary interiors, 36(3-4):355–373, 1984.

[6] AC Fowler. Fast thermoviscous convection. Studies in Applied Mathematics, 72(3):189-219, 1985.

[7] Viatcheslav S Solomatov and L-N Moresi. Scaling of time-dependent stagnant lid convection: Application to small-scale convection on earth and other terrestrial planets. Journal of Geophysical Research: Solid Earth, 105(B9): 21795-21817, 2000.

[8] VS Solomatov and L-N Moresi. Three regimes of mantle convection with non-newtonian viscosity and stagnant lid convection on the terrestrial planets. Geo-physical Research Letters, 24(15):1907-1910, 1997.

[9] Adrian Lenardic, MA Richards, and Friedrich H Busse. Depth-dependent rheology and the horizontal length scale of mantle convection. Journal of Geophysical Research: Solid Earth, 111(B7), 2006.

[10] Meysam Shahraki and Harro Schmeling. Plume-induced geoid anomalies from 2d axi-symmetric temperature-and pressure-dependent mantle convection models. Journal of Geodynamics, 59:193-206, 2012.

[11] Tania S Khaleque, Andrew C Fowler, PD Howell, and Michael Vynnycky. Numerical studies of thermal convection with tempera-ture-and pressure-dependent viscosity at extreme viscosity contrasts. Physics of Fluids, 27(7):076603, 2015.

[12] Simon Ostrach. Internal viscous flows with body forces. In Grenzschicht- forschung/Boundary Layer Research, pages 185-208. Springer, 1958.

[13] B Gebhart. Effects of viscous dissipation in natural convection. Journal of fluid Mechanics, 14(2):225-232, 1962.

[14] William F McDonough and S-S Sun. The composition of the earth. Chemical geology, 120(3-4):223-253, 1995.

[15] Tanya Lyubetskaya and Jun Korenaga. Chemical composition of earth’s primitive mantle and its variance: 1. method and results. Journal of Geophysical Research: Solid Earth, 112(B3), 2007.

[16] HJ Van Heck and PJ Tackley. Plate tectonics on super-earths: equally or more likely than on earth. Earth and Planetary Science Letters, 310(3-4):252-261, 2011.

[17] Claudia Stein, J¨org Schmalzl, and Ulrich Hansen. The effect of rheological parameters on plate behaviour in a self-consistent model of mantle convection. Physics of the Earth and Planetary Interiors, 142(3-4):225-255, 2004.

[18] C Stein, JP Lowman, and U Hansen. The influence of mantle internal heating on lithospheric mobility: Implications for super-earths. Earth and Planetary Science Letters, 361:448-459, 2013.

[19] Tania S Khaleque and SA Sayeed Motaleb. Effects of temperature-and pressure-dependent viscosity and internal heating on mantle convection. GEM- International Journal on Geomathematics, 12(1):1-22, 2021.

[20] Sumaiya B Islam, Suraiya A Shefa, and Tania S Khaleque. Mathematical modelling of mantle convection at a high Rayleigh number with variable viscosity and viscous dissipation. Journal of the Egyptian Mathematical Society, 30(1): 1-17, 2022.

[21] AC Fowler, PD Howell, and Tania S Khaleque. Convection of a fluid with strongly temperature and pressure dependent viscosity. Geophysical & Astrophysical Fluid Dynamics, 110(2):130-165, 2016.

[22] Gerald Schubert, Donald Lawson Turcotte, and Peter Olson. Mantle convection in the Earth and planets. Cambridge University Press, 2001.

[23] Andrew Fowler. Mathematical geoscience, volume 36. Springer Science & Business Media, 2011.

[24] Gary T Jarvis and WR Peltier. Mantle convection as a boundary layer phenomenon. Geophysical Journal International, 68(2):389-427, 1982.

[25] B Blankenbach, F Busse, U Christensen, L Cserepes, D Gunkel, U Hansen, H Harder, G Jarvis, M Koch, G Marquart, et al. A benchmark comparison for mantle convection codes. Geophysical Journal International, 98(1):23-38, 1989.

[26] Donald E Koglin Jr, Sanaz R Ghias, Scott D King, Gary T Jarvis, and Julian P Lowman. Mantle convection with reversing mobile plates: A benchmark study. Geochemistry, Geophysics, Geosystems, 6(9), 2005.

[27] Gary T Jarvis and Dan P Mckenzie. Convection in a compressible fluid with infinite prandtl number. Journal of Fluid Mechanics, 96(3):515-583, 1980.

[28] Wei Leng and Shijie Zhong. Constraints on viscous dissipation of plate bending from compressible mantle convection. Earth and Planetary Science Letters, 297 (1-2):154-164, 2010.

[29] AM Leitch and David A Yuen. Internal heating and thermal constraints on the mantle. Geophysical Research Letters, 16(12):1407-1410, 1989.

How to cite this paper

Convection in the Earth-like Mantle with the Influence of Strong Viscosity Variation

How to cite this paper: H. Goni, F. Khanom, T. S. Khaleque. (2023) Convection in the Earth-like Mantle with the Influence of Strong Viscosity VariationJournal of Applied Mathematics and Computation7(4), 443-454.

DOI: http://dx.doi.org/10.26855/jamc.2023.12.003