INDEPENDENT ENGINEERING CONSULTING · ZAGREB, CROATIA
CFD that holds up to scrutiny.
Flow, heat-transfer and aerodynamic simulation by an aeronautical engineer — from OpenFOAM LES and shock-capturing analysis to industrial ventilation. I deliver documented, reviewable engineering work that helps your team make decisions.
Bojan Vidović · M.Sc. Aeronautical Engineering · Independent engineer, Zagreb
External-flow simulation · DrivAer model
Aircraft panel · reverse engineeringENGINEERING SERVICES
Engineering services
Five areas of work, from industrial flow systems to CAD reconstruction. Each project starts with the geometry, operating conditions and the specific question to be answered.
Fluid Systems & Industrial Equipment
Pressure losses, flow distribution, ventilation, fans and process equipment.
Aerodynamics & Hydrodynamics
Lift, drag, flow separation and fluid loads on aircraft, vehicles and marine components.
Cooling & Thermal Management
Temperature prediction, cooling performance, heat transfer and hot-spot investigation.
Mechanical Design & Product Validation
Mechanical design, stresses, deflection and structural checks before manufacture.
3D Scanning & Reverse Engineering
3D scanning, scan-to-CAD reconstruction, dimensioned drawings and documentation for existing parts.
COMMON ENGINEERING PROBLEMS
Focused engineering investigations & technical documentation
Explore focused engineering support for equipment performance, bioreactor development, CAD reconstruction and manufacturing documentation.
Heat Exchanger Performance Investigation
Pressure drop higher than predicted? Heat transfer lower than expected? I investigate the flow and thermal behaviour behind the discrepancy.
View investigation →FLUID SYSTEMS & INDUSTRIAL EQUIPMENTFlow Distribution & Pressure-Loss Analysis
Excessive pressure loss, uneven branch flow or recirculation? I examine where the losses occur and how geometry affects distribution.
View investigation →FLUID SYSTEMS & INDUSTRIAL EQUIPMENTIndustrial Mixing & Reactor Flow Analysis
Poor mixing, stagnant regions or an unsuitable residence-time distribution? I evaluate the internal flow and the effect of proposed design changes.
View investigation →BIOPHARMA / CHO CELL CULTURECHO Bioreactor CFD & Cell Culture Engineering
CHO stirred-tank CFD for mixing, dissolved-oxygen gradients, mechanical exposure and impeller or scale-up decisions. Quantitative cell-viability prediction requires separate calibration.
Explore bioreactor CFD →3D SCANNING / SCAN-TO-CAD3D Scanning & CAD Reconstruction
Missing usable CAD for an existing part or assembly? Capture accessible geometry and reconstruct surfaces or solids for redesign, analysis and manufacture.
Explore reconstruction service →REVERSE ENGINEERING / DOCUMENTATIONTechnical Drawings from Existing Parts
Convert measured or scanned geometry into dimensioned drawings, reconstructed CAD and manufacturing documentation, with agreed tolerances and clearly identified assumptions.
Explore drawing deliverables →SELECTED PROJECTS
Selected engineering projects
Each project contains selected geometry, meshes, results, videos or CAD work. Open a case study for the technical detail.
See all projects →
EARLY-STAGE R&D · NUMERICAL OPTIMIZATIONtopoHX — Two-Fluid Topology Optimization
Experimental method development for computational generation of heat-exchanger flow-path geometry.
BIOPROCESS CFD · LAGRANGIAN TRACKINGBioreactor CFD: Mixing & Exposure
Interactive mixing-time, concentration, circulation, shear and dosing distributions beside original stirred-tank CFD media.
CLIENT PROJECT · TURBOMACHINERY · +18% PREDICTED POWERAxial Impulse Turbine
Three-dimensional CFD and rotor redesign achieving 18% higher predicted mechanical power, supported by detailed flow and leakage analysis.
STRUCTURAL FEA · REVERSE ENGINEERING · WELDSWeld Seam Stress Analysis
Scan-based structural analysis comparing idealized and as-welded plate geometry.
ENERGYFLOW · INDUSTRIAL VENTILATION · CFDIndustrial Welding Environment
Airflow and working-condition assessment around an industrial welding station.
CLIENT PROJECT · 3D SCANNING · CADAircraft Cockpit Reverse Engineering
3D scanning and CAD reconstruction of a Beechcraft instrument panel.
CLIENT PERSPECTIVE
Client feedback
A selection of reviews from completed Upwork contracts. The reviews page includes the full text and supporting screenshots.
“My company had a complicated CFD analysis to perform. Bojan successfully modeled it, provided insightful feedback and re-ran the analysis after we adjusted things based on his feedback. He provided a comprehensive report at the finish and was professional at all times. The project was at times slow but this may have been due to the complexity. I would re-use Bojan and recommend him for other CFD projects.”
“Amazing CFD skills. Definitely will hire again.”
“Great communication and high quality of work.”
HOW I WORK
How I approach an engineering study
I define the scope and required inputs before modelling, check the numerical setup, and document what the results do and do not establish.
Define the scope
Agree on the engineering question, available data, operating conditions and deliverables.
Prepare the model
Prepare geometry, mesh, boundary conditions and the required simulation cases.
Check the results
Review convergence, numerical sensitivity and the limits of the assumptions used.
Report the findings
Provide results, interpretation, limitations and recommendations for the agreed scope.
FOR ENGINEERING TEAMS
Specialist analysis when your team needs extra capacity
I support product-development groups and established consultancies with defined CFD, numerical-analysis, geometry-reconstruction and technical-review tasks. I work with supplied CAD and requirements, agree input handoffs, and deliver documented results for your engineering team to review.
Subcontracted engineering work
Scope, confidentiality, checkpoints, deliverable formats and change requests are agreed before work starts.
Discuss a subcontracting requirement →WORK WITH HELICON
Have an engineering project to discuss?
Send a brief description of the equipment, operating conditions and what you need to find out. We can then agree on scope and deliverables.