I am a postdoctoral researcher in the Center for Computational Sciences and Engineering (CCSE) in the Computational Research Division of the Computing Sciences Directorate at the Lawrence Berkeley National Laboratory.
My research topic is to develop a hybrid strategy to couple the fully-compressible and the low-Mach-number approaches, based on multigrids and AMR (Adaptive Mesh Refinement) methods. The challenge is to apply such strategy to combustion applications, and more specifically to the study of thermoacoustics problems and combustion instabilities.
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M. Emmett, E. Motheau, W. Zhang, M. Minion and J. B. Bell, "A Fourth-Order Adaptive Mesh Refinement Algorithm for the Multicomponent, Reacting Compressible Navier-Stokes Equations," submitted for publication. [arxiv]
E. Motheau, Ann Almgren and John B. Bell, "Navier–Stokes Characteristic Boundary Conditions Using Ghost Cells", AIAA J., Vol. 55, No. 10 : pp. 3399-3408, 2017. [pdf]
Z. Wang, E. Motheau and J. Abraham, "Effects of equivalence ratio variations on turbulent flame speed in lean methane/air mixtures under lean-burn natural gas engine operating conditions", Proc. Combust. Inst., Volume 36, Issue 3, 3423-3430, 2017. [pdf]
E. Motheau, J. Abraham, "A high-order numerical algorithm for DNS of low-Mach-number reactive flows with detailed chemistry and quasi-spectral accuracy", Journal of Computational Physics, 313, 430-454, 2016. [pdf]
E. Motheau, F. Nicoud and T. Poinsot, "Mixed acoustic-entropy combustion instabilities in gas turbines", Journal of Fluid Mechanics, 749, 542-576, 2014. [pdf]
E. Motheau, L. Selle and F. Nicoud, "Accounting for convective effects in zero-Mach-number thermoacoustic models", Journal of Sound and Vibration, 333(1), 246-262, 2014. [pdf]
E. Motheau, Y. Mery, F. Nicoud, and T. Poinsot, "Analysis and modelling of entropy modes in a realistic aeronautical gas turbine", Journal of Engineering for Gas Turbines and Power, 135(09):092602, 2013. [pdf]
E. Motheau, F. Nicoud, and T. Poinsot, "Using boundary conditions to account for mean flow effects in a zero-Mach-number acoustic solver", Journal of Engineering for Gas Turbines and Power, 134(11):111502, 2012. [pdf]
E. Motheau, T. Lederlin, Juan Florenciano, and P. Bruel, "LES investigation of the flow through an effusion-cooled aeronautical combustor model", Flow, Turbulence and Combustion, 88(March):169-189, 2012. [pdf]