## ملخص

This paper presents an investigation of the density-driven problem that rises during the CO_{2} sequestration into saline aquifer. The lattice Boltzmann method (LBM) is implemented in a way to solve this mixing problem (the brine problem along with the solute transport). The CO_{2}-brine interface was located at the top of the considered domain. Different Rayleigh numbers were used in order to investigate this problem. When Rayleigh number is low, we got steady-state concentration contours describing a Rayleigh-Bénard type of convection. Moreover, when the Rayleigh number was selected to be big enough, we observe that the system is less stable and a convective fingering is initiated. This instability is caused by a higher density difference between the brine and the sequestrated CO_{2}. Note here that the turbulence is not taken into account in the study. After the onset this convective instability, the brine with a high CO_{2} concentration migrates down into the porous medium. This study is based on a statistical LBM theory without assuming periodicity in any directions and without considering any type of disturbances in order to turnon the instability behavior.

اللغة الأصلية | English |
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رقم المقال | 846854 |

دورية | Mathematical Problems in Engineering |

مستوى الصوت | 2013 |

المعرِّفات الرقمية للأشياء | |

حالة النشر | Published - ديسمبر 16 2013 |

منشور خارجيًا | نعم |

## ASJC Scopus subject areas

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## بصمة

أدرس بدقة موضوعات البحث “Modeling the CO_{2}sequestration convection problem using the lattice Boltzmann method'. فهما يشكلان معًا بصمة فريدة.