Zerodynamix is an independent computational fluid dynamics consultancy delivering rigorous aerodynamic analysis, model development, and design optimisation for aerospace clients. The company was founded and is led by Dr. J.P.S. Sandhu, who holds a Ph.D. in Aerospace Engineering from IIT Madras and brings over a decade of research and industry experience in high-speed CFD.

Our work spans the full range of aerospace CFD challenges — from first-principles transition modelling and passive flow control to surrogate-based multi-objective optimisation of complex intake geometries. We combine deep domain knowledge with a rigorous, publication-backed approach that goes beyond running off-the-shelf solvers.

About the Founder

Dr. Jatinder Pal Singh Sandhu holds a Ph.D. in Aerospace Engineering from IIT Madras (advisor: Dr. Santanu Ghosh) and a B.Tech in Mechanical Engineering from NIT Kurukshetra (2015). His doctoral research focused on laminar-to-turbulent transition modelling for high-speed flows, producing publications in AIAA Journal, Computers & Fluids, and Shock Waves.

After completing his Ph.D., he worked as a Senior R&D Engineer (CFD) at Yanxiki Tech before founding Zerodynamix to offer independent specialist consulting to aerospace clients worldwide.

He is the lead developer of FEST-3D, an open-source structured CFD solver published in the Journal of Open Source Software, and co-authored Computational Design and Optimization of Supersonic Intakes (Routledge / CRC Press, 2025) alongside Dr. Ik Soo Park and Dr. N. Ananthkrishnan.

Contact: sandhu@zerodynamix.com

What Sets Us Apart

Research-backed expertise. Our methods are grounded in peer-reviewed work published in AIAA Journal, Computers & Fluids, Shock Waves, and the Journal of Open Source Software. When we apply a model, we understand its derivation, its limits, and how to validate it.

Authoritative publication. In November 2025, Dr. Sandhu co-authored Computational Design and Optimization of Supersonic Intakes (Routledge / CRC Press, ISBN 9781032794570) — a 184-page textbook covering the complete supersonic intake design chain from analytical methods through multi-objective optimisation.

Open-source tooling. Zerodynamix is the lead developer of FEST-3D, an open-source structured CFD solver published in the Journal of Open Source Software in 2020 and used by research groups worldwide.

Core Capabilities

• Transition Modelling — Local-correlation zero-equation models; dynamical-systems stability analysis; RANS solver integration
• High-Speed Flow Control — Micro vortex generators, porous media, transonic SWBLI drag reduction
• Supersonic Intake Design — Kriging/MOGA optimisation, Axiomatic Design Theory, 2D/3D CFD analysis
• Open-Source CFD Development — FEST-3D; turbulence and transition model implementation
• Turbomachinery Aerodynamics — Transition analysis, convergence studies, boundary-layer characterisation

Track Record

Journal papers	5 (AIAA Journal ×2, Computers & Fluids, Shock Waves, JOSS)
Conference papers	8 (AIAA, ASME)
Textbook	Computational Design and Optimization of Supersonic Intakes, Routledge 2025
Open-source code	FEST-3D structured CFD solver

Get in touch to discuss how Zerodynamix can support your project.