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Aleksandra Pachalieva

CNLS Postdoctoral Research Associate
CNLS/EES-16

Subsurface Flow and Transport Processes

Aleksandra Pachalieva

Office: TA-3, Bldg 1690, Room 125
Mail Stop: B258
Phone: (505) 310-0128
Fax: (505) 665-2659
Email: apachalieva@lanl.gov
home page

Research highlight
 Educational Background/Employment:
  • (2016-2022) Ph.D. Mechanical Engineering, Technical University of Munich, Germany
  • (2013-2016) M.Sc. Computational Science and Engineering (CSE), Technical University of Munich, Germany
  • (2009-2013) B.Sc. Computer Systems and Technology, Technical University of Sofia, Bulgaria
  • Employment:
    • (2022-present) Postdoctoral Resesarch Assiciate, Los Alamos National Laboratory, Los Alamos, NM, USA.
    • (2019-2022) Graduate Research Assistant, Los Alamos National Laboratory, Los Alamos, NM, USA.
    • (2016-2019) Research Associate, Altair Engineering Inc., Munich, Germany.

Research Interests:

  • Physics-informed machine learning
  • Differentiable programming
  • Lattice Boltzmann method
  • Scale-bridging
  • High-performance computing

Selected Recent Publications:

    1. Satish Karra, Mohamed Mehana, Nicholas Lubbers, Yu Chen, Abdourahmane Diaw, Javier E. Santos, Aleksandra Pachalieva et al. Predictive Scale-Bridging Simulations through Active Learning. arXiv preprint arXiv:2209.09811 (2022).
    2. Aleksandra Pachalieva, Daniel O'Malley, Dylan Robert Harp, and Hari Viswanathan. Physics-informed machine learning with differentiable programming for heterogeneous underground reservoir pressure management. arXiv preprint arXiv:2206.10718 (2022). LA-UR-22-24347
    3. Aleksandra Pachalieva and Alexander J. Wagner. Connecting lattice Boltzmann methods to physical reality by coarse-graining Molecular Dynamics simulations. arXiv preprint arXiv:2109.05009 (2021). LA-UR-21-28702
    4. Aleksandra Pachalieva and Alexander J. Wagner. Molecular dynamics lattice gas equilibrium distribution function for Lennard-Jones particles. Philosophical Transactions of the Royal Society A 379.2208 (2021): 20200404. LA-UR-21-20022
    5. Aleksandra Pachalieva and Alexander J. Wagner. Non-Gaussian distribution of displacements for Lennard-Jones particles in equilibrium. Physical Review E 102.5 (2020): 053310. LA-UR-20-24192
    6. M. Reza Parsa, Aleksandra Pachalieva and Alexander J. Wagner. Validity of the Molecular-Dynamics-Lattice-Gas Global Equilibrium Distribution Function. International Journal of Modern Physics C 30.10 (2019): 1941007.
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