Vivaswat Kumar
Mechanical R&D Engineer
Stuttgart,BW
Summary
Mechanical Engineer with 6+ years of experience in thermal-fluid systems, mechanical design, and experimental R&D, with direct relevance to turbomachinery and internal flow applications. Skilled in designing and commissioning mechanical test rigs, conducting CFD analysis (ANSYS Fluent) of internal airflow and pressure losses, and integrating flow diagnostics (UDV, PIV) to validate performance under real operating conditions. Proficient in CAD (Siemens NX, SolidWorks) and data analytics (Python, MATLAB) to support engineering decisions from concept through prototype and validation. Strong communicator of technical results, with experience collaborating across international engineering teams in Germany, France, and India.
Overview
11
11
years of professional experience
Work History
Research Associate
Institute of Thermal Turbomachinery (KIT)
04.2025 - Current
- Designed a modular turbine blade cooling test rig in Siemens NX, including inlet flow conditioning, blade module, and diffuser with separation control.
- Applied general manufacturing tolerances according to DIN ISO 2768 to ensure manufacturability, proper fit, and reliable assembly/disassembly of components.
- Performed thermal expansion, surface temperature, and sealing analyses to ensure safe high-temperature operation.
- Conducted measurement uncertainty analysis and optimized >90% visibility of the must-see zone of the blade in the new design.
- Applied DIN standards for pipe sizing, flanges, and fittings in the commissioning of test rig components.
Research Assistant
TU Bergakademie Freiberg
05.2024 - 03.2025
- Performed CFD simulations in ANSYS Fluent to predict velocity profiles and pressure drops in laminar internal flows.
- Used simulation results to validate experimental conditions and scaling for industrial heater applications.
- Designed an annular flow test section using SolidWorks with adjustable geometry for thermal-fluid performance studies.
- Applied scaling analysis to ensure experimental flow conditions matched full-scale industrial heater designs.
- Delivered findings through technical documentation and internal presentations.
Research Assistant
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
10.2019 - 12.2023
- Investigated precession-driven flows in a rotating cylinder as part of the DRESDYN dynamo experiment.
- Applied Ultrasonic Doppler Velocimetry (UDV) for real-time flow measurements in rotating systems.
- Conducted parameter studies across Reynolds number and nutation angles, informing scaling laws.
- Collaborated in a multinational research team bridging theory, simulation, and experiment.
- Co-authored peer-reviewed papers in Phys. Fluids, JFM, Phys. Rev. E, and presented at 7+ international conferences.
Intern
Institut de Radioprotection et de Sûreté Nucléaire (IRSN)
05.2018 - 10.2018
- Analyzed two-phase air-water flow in rod bundles using data from wire-mesh sensors.
- Validated flow regimes using the drift flux model developed in Python and compared with experimental results.
- Contributed to safety studies for thermal-hydraulic performance in nuclear reactor spent fuel pool.
Quality Engineer
Delta Techno Cast Pvt. Ltd.
04.2015 - 07.2015
- Design, model and document die-cast, sheet-metal, and machined parts and assemblies in SolidWorks.
- Diagnosed and corrected casting defects, implementing process improvements that reduced defect rate by 40%.
- Developed quality control checklists and inspection procedures to standardize defect detection.
- Coordinated with production teams to address root causes, improving overall manufacturing yield.
Education
PhD - Mechanical Engineering
TU Dresden
Dresden, Germany07-2026
Master’s Degree - undefined
UPES
Dehradun, India01.2019
Master’s Degree - undefined
IMT Atlantique
Nantes, France01.2018
Bachelor’s Degree - undefined
Government Engineering College
Palanpur, Gujarat01.2014
Skills
CFD & Numerical Simulation: ANSYS Fluent (internal flows, laminar & turbulent regimes, CFD–experiment validation)
AWARDS AND HONOR
Science & Education Scholarship – EDF-Institut de France (INR 3.5 Lakhs), Prime Minister Scholarship – Govt. of India (INR 1.1 Lakhs), Uttar Pradesh Soldier Welfare Dept. Scholarship (INR 0.75 Lakhs)
PUBLICATIONS & PRESENTATIONS
- A. Giesecke, T. Vogt, F. Pizzi, V. Kumar, et al. ”The global flow state in a precessing cylinder at large nutation angle”, Journal of Fluid Mechanics, 998, A30 (2024). DOI
- V. Kumar, F. Pizzi, et al. ”Dynamo action driven by precessional turbulence”, Phys. Rev. E 109, 065101 (2024). DOI
- V. Kumar, F. Pizzi, et al. ”The effect of nutation angle on the flow inside a precessing cylinder and its dynamo action”, Phys. Fluids 35, 014114 (2023). DOI
- Presented research at 7+ international conferences, including the 14th Int. Symposium on Ultrasonic Doppler Methods for Fluid Mechanics, Kobe, Japan (2023). DOI
- Full publication list Google Scholar Profile
Timeline
Research Associate
Institute of Thermal Turbomachinery (KIT)
04.2025 - Current
Research Assistant
TU Bergakademie Freiberg
05.2024 - 03.2025
Research Assistant
Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
10.2019 - 12.2023
Intern
Institut de Radioprotection et de Sûreté Nucléaire (IRSN)
05.2018 - 10.2018
Quality Engineer
Delta Techno Cast Pvt. Ltd.
04.2015 - 07.2015
Master’s Degree - undefined
UPES
Master’s Degree - undefined
IMT Atlantique
Bachelor’s Degree - undefined
Government Engineering College
PhD - Mechanical Engineering
TU Dresden