Profile Details

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Hire Dr. Ebrahim G.

Sweden

USD 50 /hr

PhD in Fluid Dynamics | CFD Specialist in Multiphase Flow, Heat Transfer & Biomedical Applications

Profile Summary

I am a PhD-qualified engineer with over 15 years of experience in Computational Fluid Dynamics (CFD), specializing in fluid mechanics, heat transfer, and multiphase flow modeling. My expertise bridges academic research and industrial applications, providing accurate, physics-based simulations to support product development, R&D, and regulatory submissions. I am graduated from Chalmers University of Technology and have worked with leading organizations such as Volvo Cars (EV cooling & thermal management), Rolls-Royce Marine and Andritz Hydro (cavitation modeling), and Sahlgrenska Hospital (nasal airflow modeling for medical diagnostics). I provide both technical consulting and end-to-end CFD solutions, including simulation design, model development, post-processing, validation against experimental data, and reporting for technical or academic audiences. 🔷 Areas of Expertise: Multiphase CFD (e.g. cavitation, fluidized bed, bubble column, particle-laden flows) Heat transfer systems (e.g. EV cooling, subway tunnel ventilation, HVAC, energy systems) Biomedical flows (CT-based airway modeling, aerosol transport, drug delivery) Turbulence modeling (RANS, LES, DES) Solver development (UDFs, OpenFOAM customization) Marine/hydrodynamics (e.g. ship propellers, cavitation/erosion) Aerodynamics (e.g. wing design, NVH) Transient and steady-state simulation 🔷 Tools & Programming Languages: ANSYS Fluent | OpenFOAM | STAR-CCM+ | ICEM CFD | ANSA | GAMBIT | MATLAB | Python | C++ | Fortran | Tecplot | ParaView 🔷 What I Offer: Project-based CFD consulting Support for academic research, journal submissions, or regulatory reporting Numerical model development and validation Technical reporting and visualization R&D consulting for startups and medtech 🔷 Industries Served: Automotive (EV cooling, aerodynamics, HVAC) Biomedical (airway flows, medical devices, aerosol dynamics) Marine & Hydrodynamics (propellers, cavitation) Energy & HVAC (heat exchangers, tunnel ventilation)

Subject Matter Expertise

• ★ Thermal Analysis
• ★ Fluid Mechanics
• ★ Computational Fluid Dynamics
• ☆ Biotechnology & Bioengineering
• ☆ Biomedical Engineering
• ☆ Aerospace Engineering
• ☆ Aerodynamics
• ☆ Engineering Thermodynamics/Thermophysical Engineering
• ☆ Energy Security
• ☆ Heat Transfer & Calorimetry
• ☆ Fluid Dynamics
• ☆ Thermodynamics
• ☆ Renewable Energy
• ☆ Solar Energy
• ☆ Hydropower

Services

• Writing
• Research
• Consulting
• Data & AI
• Product Development

Writing Technical Writing

Research Scientific and Technical Research, Systematic Literature Review

Consulting Scientific and Technical Consulting

Data & AI Predictive Modeling, Data Visualization, Data Processing

Product Development Product Validation, Concept Development

Work Experience

First Analysis Engineer

Volvo Cars

May 2022 - November 2024

PostdoctoralResearcher

Chalmers University of Technology

January 2021 - April 2022

PhD candidate

Chalmers University of Technology

December 2015 - December 2020

Visiting PhD Student

Andritz Hydro (Switzerland)

April 2018 - June 2018

Visiting PhD Student

Technical University Munich

June 2016 - August 2016

Education

PhD in Thermo-Fluid Dynamics

Chalmers University of Technogy - Sweden

December 2015 - December 2020

Certifications

• Applied Project Management

  Wenell, Sweden

  March 2019 - Present

• Introduction to High Performance Computing

  KTH Royal Institute of Technology

  August 2017 - Present

Publications

JOURNAL ARTICLE

Ebrahim Ghahramani, H. Ström, R.E. Bensow (2021). Numerical simulation and analysis of multi-scale cavitating flows . Journal of Fluid Mechanics.

Saad Jahangir, Magdalena Neuhauser, Sébastien Bourgeois, Rickard E. Bensow, Christian Poelma, Ebrahim Ghahramani(2021). Experimental investigation of cavitation-induced erosion around a surface-mounted bluff body . Wear. 480-481. p. 203917. Elsevier {BV}

(2020). Experimental and numerical study of cavitating flow around a surface mounted semi-circular cylinder . International Journal of Multiphase Flow.

Ebrahim Ghahramani, Mohammad Hossein Arabnejad, Rickard E. Bensow(2019). A comparative study between numerical methods in simulation of cavitating bubbles . International Journal of Multiphase Flow. Elsevier {BV}

Ebrahim Ghahramani, Mohammad Hossein Arabnejad, Rickard E. Bensow(2018). Realizability improvements to a hybrid mixture-bubble model for simulation of cavitating flows . Computers & Fluids. 174. p. 135--143. Elsevier {BV}

(2017). Deposition fraction of ellipsoidal fibers in a model of human nasal cavity for laminar and turbulent flows . Journal of Aerosol Science.

(2017). Numerical investigation of turbulent airflow and microparticle deposition in a realistic model of human upper airway using LES . Computers & Fluids.

(2014). Numerical analysis of stochastic dispersion of micro-particles in turbulent flows in a realistic model of human nasal/upper airway . Journal of Aerosol Science.