William Machaca, Phd Email & Phone Number

Argentina

San Carlos De Bariloche, Río Negro, Argentina

- Coordinating CFD analysis of the thermohydraulics of the CAREM25 nuclear reactor using OpenFOAM, collaborating with various departments within CNEA to ensure comprehensive and accurate results.- Pioneering the integration of machine learning techniques into CFD applications within the Computational Mechanics Department, particularly focusing on unstable flows, in collaboration with experts from the Medical Physics Department of CNEA, exemplifying a commitment to interdisciplinary innovation.- Leading a DNS modeling of laminar-turbulent transition in mixed convection flows.- Collaborating closely with Garraham Hospital on pioneering CFD studies in hemodynamics, focusing on ideal Fontan geometries to improve the understanding and treatment of cardiovascular disorders.- Supervised undergraduate projects on hydrodynamic stability analysis, employing Python and spectral numerical methods to investigate natural perturbations in diverse flow scenarios, including Poiseuille, Couette, Jet and Blasius flows.- Analyzing results and disseminating findings through publications in prestigious scientific journals and conference proceedings.

- Simplified the geometry of the RA6 fuel element to model the laminar-turbulent transition phenomenon, using a channel flow with an aspect ratio of 22.- Conducted DNS of laminar-turbulent transition in channel flows, focusing on the influence of perturbation parameters and roughness on the laminar-turbulent transition phenomenon and its impacts on the heat transfer dynamics. - Developed computational tools in Fortran90 and Octave for solving fluid equations and eigenvalue problems, enhancing the accuracy and efficiency of laminar-turbulent transition simulations.- Designed and implemented a 3D module in Fortran 90 and MPI to solve the energy equation within solid domains. This code was integrated with the Incompact3d code, enabling comprehensive analysis of conjugate heat transfer problems under laminar-turbulent transition.

- Developed two Fortran90 codes to solve the conduction and Burgers equations using high-order compact finite difference schemes.- Developed a computational tool in Octave to solve the Orr-Sommerfeld eigenvalue problem, enabling detailed hydrodynamic stability analysis of Poiseuille flow.- Conducted DNS of spatial laminar-turbulent transition with ideal thermal boundary conditions (uniform wall temperature) for moderate Reynolds numbers.- Implemented subroutines in Fortran90 for visualization, analysis, and post-processing of results.- Utilized a range of tools including Incompact3d, ParaView, Octave, Gnuplot, and LaTeX for simulation, visualization, and documentation purposes.

San Carlos De Bariloche-Rio Negro-Argentina

- Conducted detailed analysis of two power cycles for CAREM25 during normal operation, cool shutdown, and hot shutdown.- Performed neutronic sensitivity analysis of the reactor operating at the designed normal power under variations in flow rate, pressure, temperature, power, and void factor.- Utilized CONDOR, CITVAP and THERMIT codes for neutronic and thermohydraulic analysis.

Courses: Fluid mechanics and Numerical Methods.

Courses: Fluid mechanics, Thermodynamics and Numerical Methods.

Course: Fluid mechanics

Phd In Cfd, Nuclear Engineering

Master Of Engineering - Meng

Nuclear Engineer

Ingenieria Mecatrónica