Bojan V.

I'm an aerospace engineer specializing in computational fluid dynamics (CFD), aerodynamic and hydrodynamic optimization, and simulation automation. I primarily use OpenFOAM and Simcenter STAR-CCM+, with Python for engineering calculations, geometry processing, and automated workflows. I have over 10 years of professional engineering experience, including more than six years as an independent consultant. My Upwork history includes $100K+ earned, Top Rated Plus status, and a 100% Job Success Score. CFD AND ENGINEERING OPTIMIZATION My work includes: - Internal and external aerodynamics - Free-surface flows and moving-body simulations - Turbomachinery and rotating flows - Multiphase and non-Newtonian fluid modelling - Conjugate heat transfer and thermal management - Laminar-to-turbulent transition modelling - Adjoint and parametric design optimization The choice of numerical methods depends on the physics and the engineering question. I pay particular attention to mesh quality, convergence, the suitability of physical models, and the interpretation and limitations of the results. ENGINEERING SOFTWARE AND NUMERICAL MODELLING Alongside individual CFD studies, I develop tools for geometry processing, automated meshing, parametric design studies, simulation execution, and post-processing. I use Python extensively for engineering automation and develop STAR-CCM+ workflows using Java macros. My OpenFOAM work also includes adapting solver functionality and physical models for problems that cannot be adequately addressed with standard configurations. I'm particularly interested in projects where simulation is part of a repeatable design or optimization process. Where it makes engineering and commercial sense, I can develop reusable tools around an existing workflow rather than performing each analysis manually. SELECTED PROJECT EXPERIENCE - Olympic rowing boat hull optimization: Multi-year STAR-CCM+ project combining transient VOF free-surface CFD, overset meshes, three-degree-of-freedom hull motion, time-dependent rowing forces and moments, hull-shape optimization, and simulation automation. - Aircraft fuselage optimization: Adjoint-based aerodynamic shape optimization to investigate drag sensitivity and identify beneficial geometry changes. - Axial impulse turbine: Full-annulus CFD analysis of an eight-nozzle, 46-blade turbine, including rotating-flow structures, rotor torque, blade loading, and leakage. - Non-Newtonian fluid modelling: Adapted OpenFOAM modelling for shear-dependent rheology in industrial process-flow simulations. OTHER ENGINEERING TOOLS SolidWorks, CATIA, Creo, Siemens NX, and OpenVSP for CAD and geometry preparation. My background also includes structural analysis and industrial 3D scanning. PROJECT APPROACH Before starting work, I establish the engineering problem, available input data, scope, and acceptance criteria. For larger assignments, I prefer defined milestones and technical reviews before proceeding to the next stage. Deliverables are agreed for each project and typically include numerical results, relevant verification checks, and a technical report covering the modelling approach, assumptions, limitations, and conclusions. I work with engineering companies, product-development teams, and R&D departments on individual studies and longer-term technical projects.