孟宪南，博士，兴海教授，硕士生导师
2021年10月大连海事大学海外人才引进计划“兴海教授”全职引进至交通运输工程学院土木系任教。
科学研究生涯始于德国达姆施塔特工业大学。2012年获得欧盟第七框架下的玛丽居里项目（MuMoLaDe）全额奖学金资助，来到德国达姆工大机械工程系攻读博士学位，从事流体动力学相关方面的研究工作，致力于利用连续介质力学建模地球物理流动中涉及的颗粒流、泥石流等多尺度、跨学科物理问题。博士答辩成绩为1.0（Very Good）。
2017年，我撰写的科研项目申请书（A theoretical, experimental and numerical study of the formation of coarse dry granular fronts and spontaneously self-channelizing levees in debris flows）成功地获得欧盟玛丽居里基金委员会资助，前往英国曼彻斯特大学数学系从事颗粒流、泥石流深层次数学建模工作，获得欧盟玛丽居里学者荣誉称号。在曼彻斯特工作期间，Gray教授、Johnson博士同我提出了一个崭新的泥石流数学模型。该模型突破传统泥石流数学模型基本物理假设，明确地考虑了流动自发形成的垂直结构以及速度剪切，进而解释了泥石流固液分离现象形成的物理机理。基于我们的研究工作，Gray教授、Johnson博士以及我于2022年成功地申请到了英国自然环境委员会基金项目“Debris-flow dynamics: Understanding phase separation and wave formation”，且我在回国工作的第一年里成功地申请到了国家自然科学基金面上项目“泥石流固液分离现象机理探究”以及辽宁省兴辽英才青年拔尖人才项目”资助。
我的科学研究目标是厘清泥石流动力学过程的物理机理，提出一个物理机理清晰、数学结构简洁的泥石流运动模型方程，研发相应的数值求解代码，开展可验证数学模型的实验工作。预期建立的泥石流运动模型方程可为评估泥石流流动性、流动轨迹、堆积面积等提供强有力的数学工具。
目前的研究兴趣主要集中在颗粒流、水-颗粒两相流的理论建模、数值模拟、实验探究。
Personal Statement:
My research trajectory started at the Technische Universitat Darmstadt in Germany as part of the EU MuMoLaDe project within the framework of Marie Curie ITN to do my PhD in the field of theoretical/computational fluid mechanics. During my PhD, I worked on the multiphase flows in geophysics covering a very wide spectrum of methods including continuum-mechanical modeling and high-resolution numerical simulation. My research during PhD was very productive, which is evident from my four peer-reviewed scientific articles and the fact that I defended PhD with "very good" in 2017.
After PhD, I wrote a research proposal on “A theoretical, experimental and numerical study of the formation of coarse dry granular fronts and spontaneously self-channelizing levees in debris flows”, which came in the top 9% out of 9089 proposals submitted to the EU in 2017, and I therefore won a highly competitive and prestigious Marie Sklodowska-Curie Individual Fellowship and came to the University of Manchester in 2019. In Manchester, I developed a new theory for the mixture flows of water and monodisperse grains. It takes account of the vertical structure of the flow and velocity shear through the flow depth, which produces an important mechanism for differential species transport and the formation of dry debris-flow fronts. I expect my work to be seminal for the field of debris flows because the new theory developed for the first time captures spontaneous development of dry granular fronts, as well as allowing the flow to seamlessly transition between undersaturated and oversaturated regime. Based on this new theory, Prof. Gray has successfully secured funding from NERC (NE/X00029X/1), and I am formally a partner on this project.
After Manchester, I was directly recruited by the Dalian Maritime University (China) in 2021 to the position of Xinghai Professor, which was set up to attract young researchers who showed excellence in the research ability, to continue the research of multiphase flows in geophysics. Based on my prominent work, my research proposal on "Physical mechanism of phase separation in debris flows" was successfully funded by the National Natural Science Foundation of China in the first year I started the current job, which clearly demonstrated the research that I have produced is of the very highest quality.
The ultimate goal of my research is understanding the physics of debris flows and developing a robust model to provide international debris-flow scientists for reliable prediction of run-out, deposition and impact of debris flows, which requires the knowledge of particle-size segregation and granular rheology.
I have been actively communicating with peers, including presentations in the conferences of EGU 2021 and 3rd IMA dense granular flow. I am also a co-organizer of symposium (S75 session: Computational Methods and Modeling Techniques in Natural Hazards Engineering) in the ICCES 2023 conference.
代表性项目
2023.01 – 2026.12，国家自然科学基金面上项目“泥石流固液分离现象机理探究”主持，直接经费：56万人民币。
2022.10 – 2025.09，英国自然环境科学基金项目“Debris-flow dynamics: Understanding phase separation and wave formation”，参与 (Visiting Researcher), 金额：57.1万英镑。
2021.10 – 2026.10，大连海事大学人才启动经费，主持，金额：100万人民币。
2018.11 – 2021.04， 欧盟玛丽居里项目（Marie Skłodowska-Curie Project）“A theoretical, experimental and numerical study of the formation of coarse dry granular fronts and spontaneously self-channelizing levees in debris flows”主持，金额：18万欧元。
2012.09 – 2015.08， 欧盟第7框架下项目（Marie Curie ITN）“Multiscale Modelling of Landslides and Debris Flows”参与，金额：430万欧元。
代表性奖励
近五年5篇代表性论文
1）W. Sun, X. Meng*, Y. Wang, S.S. Hsiau & Z. You (2023). A depth-averaged description of submarine avalanche flows and induced surface waves, Journal of Geophysical Research: Earth Surface, 128, e2022JF006893.
2） X. Meng, C.G. Johnson & J.M.N.T. Gray* (2022). Formation of dry granular fronts and watery tails in debris flows, Journal of Fluid Mechanics, 943, A19.
3) X. Meng*, Y Wang, MC Chiou, Y Zhou (2020). Investigation of influence of an obstacle on granular flows by virtue of a depth-integrated theory，European Journal of Mechanics-B/Fluids 84, 334-349.
4) F. Feng, X. Meng*, Q Wang (2020). Sound generation by a pair of co-rotating vortices using spectral acoustic analogy. Journal of Sound and Vibration 469, 115120.
5) X Meng, Y Wang*, F Feng, C Wang, Y Zhou 2018. Granular flows in a rotating drum and on an inclined plane: Analytical and numerical solutions. Physics of Fluids 30, 106605.
热烈欢迎对岩土工程、流体力学、计算流体力学、应用数学、实验技术感兴趣的学生、博士后前来打扰！
联系方式: xiannan.meng@dlmu.edu.cn；mengxiannan86@gmail.com
