報告題目：Advances in Digital Rock Physics as Applied to Flow and Transport in Tight Geological Porous Media

報告人：孫樹瑜 教授

報告時間：11月4日 16:00

報告地點：明志樓A536

報告人簡介：

孫樹瑜，沙特阿卜杜拉國王科技大學教授，2020年度入選中國教育部長江學者講座教授。他先后于1991年和1994年畢業于天津大學獲工學學士和工學碩士學位，隨后繼續就讀于天津大學和美國德克薩斯大學奧斯丁分校并畢業獲化學工程專業(1997年，師從中國科學院院士余國琮)和計算與應用數學專業(2003年，師從美國國家工程院院士Mary Wheeler)雙博士學位。他于2003年至2009年間先后在美國德克薩斯大學奧斯丁分校任博士后和副研究員及在美國克萊姆森大學任助理教授兼博士生導師。2009年8月，他作為百位創校教授之一加盟阿卜杜拉國王科技大學(KAUST，US News排名全球前一百)至今，目前任該校計算傳質現象實驗室(CTPL)主任，地球科學系教授，石油工程系教授和數學系教授。已發表SCI期刊論文390余篇，總計被引超過12200余次，H指數56。先后指導碩博研究生共50余名(已畢業博士15名)，博士后研究人員20余位。目前兼任Journal of Computational Physics (JCP)，Gas Science and Engineering，InterPore Journal和Computational Geoscience等國際知名期刊的副主編，以及Applied Energy，Applied Thermal Engineering，Fuel，Computer Methods in Applied Mechanics and Engineering等國際知名期刊客座主編。他從2020年起至今，連續五年入選了“工程學科全球頂尖科學家” (斯坦福大學發布的全球前2%頂尖科學家榜單)；并在工程和數學兩個學科都榮列國際知名學術網站Research.com發布的2024年度全球頂尖科學家名錄，排名全球第1922名。他目前是InterPore Saudi Chapter的主席。

報告內容摘要：

Darcy-scale multi-phase flow simulation in subsurface reservoirs has routinely used by reservoir engineers over half a century. More recently, digital Rock Physics (DRP) and pore-scale flow simulation have also become a complementary part in reservoir characterization over the past two or three decades as non-destructive methods used to determine absolute/relative permeability, capillarity, effective elastic rock parameters and other porous media properties. In the recent two decades, the Navier–Stokes–Cahn–Hilliard (NSCH) system has started to merge as the standard model for the Direct Numerical Simulation (DNS) of incompressible immiscible two-phase flow, with finite volume methods (FVM), finite element methods (FEM), Lattice Boltzmann methods (LBM), and Smoothed Particles Hydrodynamics (SPH) as popular discretization schemes. Since DNS is computationally expensive with complex geometrical pore space, a simplified yet powerful strategy known as the pore network model (PNM) has been constructed and applied widely for simulating a variety of different physical and chemical processes in porous media, including capillarity effect, phase exchange, non-Newtonian displacement, non-Darcy flow, and reactive transport; but slippage effects, adsorption, desorption, and confinement effects within tight pore channels still require models in smaller scales such as molecular dynamics (MD) simulations.

In this talk, we share a few of our recent works in digital rock physics and pore-scale flow simulation, including 1) our research on the two-scale molecular dynamics–Monte Carlo (MD-MC) framework with applications in tight pore-scale phenomena including transport of shale gas/oil and leakage of subsurface hydrogen storage; 2) our ongoing research on energy-stable strategy of Lattice Boltzmann method (LBM) with applications on two-phase flow and reactive transport in porous media; 3) our novel SPH-based particle method for pore-scale flow simulation, which preserves not only mass, momentum but also energy dissipation law in the discrete solution; and 4) the pore network model (PNM) described from model reduction viewpoint for pore-scale fluid flow as well as our new pixel-free algorithm of pore-network model extraction known as the flashlight search medial axis algorithm. Numerical examples are provided to demonstrate the advantages of the new models and/or algorithms.

主辦單位：土木工程與測繪學院

科學技術發展研究院