The Role
Perform CFD simulations from subsonic through hypersonic regimes for external airframes and internal propulsion flows. Analyze shock interactions, turbulence, separation, heat flux, and aerothermodynamic effects. Build meshes, run 6DOF dynamic and overset simulations, post-process aerodynamic data, and support multidisciplinary design activities. Automate workflows using Python or scripting tools, conduct validation studies, and communicate results through technical reports and design recommendations.
Summary Generated by Built In
Expertise in CFD and External & Internal Aero (Subsonic to Hypersonic
Regime). The ideal candidate will have a deep understanding of gas
dynamics and shock interactions, aerodynamics, and possess excellent
problem solving skills to deliver high-quality simulations for various
projects. Function as a solution specialist in the field of Computational
Fluid Dynamics using simulation tools such as ANSYS FLUENT, Chemkin or
Star CCM+, ANSYS CFX.
Key Responsibilities
- Perform aerodynamic simulations across subsonic, transonic,
supersonic, and hypersonic regimes using CFD tools (e.g., Ansys Fluent)
to evaluate external airframe and internal duct/propulsion flow
performance.
- Analyze complex flow phenomena such as shock formation, expansion
waves, separation, and Shockwave–Boundary Layer Interaction, ensuring
accurate prediction of pressure, temperature, and heat flux distributions.
- Set up and execute CFD models for external flows (wings, fuselage,
control surfaces) and internal flows (intakes, nozzles, ducts), applying
appropriate boundary conditions, compressibility effects, and gas
dynamic principles.
- Apply advanced turbulence models — RANS, LES, DES, or hybrid
methods — and justify their selection based on flow regime, Reynolds
number,and accuracy requirements.
- Generate high-quality meshes for complex geometries using structured,
unstructured, or hybrid approaches, ensuring proper near-wall
resolution (y⁺ control) and grid independence for reliable aerodynamic
predictions.
- Conduct 6DOF dynamic simulations using dynamic and overset meshes
to study vehicle motion, stability, and control behaviour during free-flight
or moving-bodyscenarios.
- Post-process and analyse CFD results, extracting aerodynamic
coefficients (Cl, Cd, Cm), flow visualization plots (Mach contours, Cp
distributions), and force/moment data for design evaluation and
optimization.
- Collaborate with multidisciplinary teams (structures, thermal, propulsion)
by providing aerodynamic loads, surface pressures, and heat flux data
for coupled simulations and integrated performance analysis.
- Automate workflows and data analysis using Python or scripting tools for
mesh generation, solver execution, and result processing to improve
efficiency and repeatability.
- Document and communicate findings through detailed technical reports,
validation studies, and design recommendations to support airframe,
propulsion, and system-level development efforts
Requirements
Required Skills:
- Perform aerodynamic simulations across subsonic to
hypersonic flow regimes.
- Analyze external flows over airframes and internal flows
through ducts, intakes, and propulsion systems.
- Knowledge of Shockwave Boundary Layer Interaction and
Gas Dynamics.
- Experience with turbulence modeling (RANS, LES, DES)
and mesh generation for complex geometries.
- Perform 6DOF Simulations with Dynamic and Overset
Mesh.
- Knowledge of External & Internal Aero (Subsonic to
Hypersonic Regime) Modelling– mandatory.
- Strong fundamentals in CFD with Ansys Chemkin
knowledge- Preferred.
- Aerospace (or) Mechanical with strong knowledge on
Combustion simulations.
- Knowledge of gas dynamics and shock interactions
mandatory
- Knowledge of external aerodynamics– mandatory
- Basic knowledge of MATLAB for post-processing.
Preferred Skills:
- Fluent dynamic and overset meshing
- Fluent 6DOF UDFs
- Fluent external aero best practice
- Pressure based and density-based solver’s applicability
along with pros & cons.
- Low subsonic to hyper-sonic flows. Most of the work is in
0.9 to 5 Mach
- Adaptive meshing
o Job submission on cluster(Pbs scripts) & RSM
- TUI journal utilization for automation of work
- Parametric
optimization
through
OptiSLang.
Parameterization through space claim and fluent for
simultaneous design point runs.
- Experience with ANSYS FLUENT/ STAR CCM+ or other
commercial CFD software.
- Sound background in Combustion, Computational Fluid
Dynamics [CFD], Aerodynamics, & Aerothermodynamics,
Scramjet Engine CFD Modelling, Propulsion, Liquid
Propellant Rocket Engine Physics.
- Engaging personality, engineering curiosity and
willingness for continuous learning.
- Possesses a sense of urgency, strong organizational and
follow up skills.
Skills Required
- Experience performing aerodynamic CFD simulations across subsonic, transonic, supersonic, and hypersonic regimes
- Experience analyzing external airframe flows and internal duct, intake, and propulsion flows
- Knowledge of shockwave boundary layer interaction and gas dynamics
- Experience with RANS, LES, DES, or hybrid turbulence modeling
- Experience generating meshes for complex geometries
- Experience performing 6DOF simulations with dynamic and overset meshes
- Knowledge of external and internal aerodynamics modeling from subsonic to hypersonic regimes
- Strong CFD fundamentals and knowledge of ANSYS Chemkin
- Aerospace or Mechanical Engineering background with strong combustion simulation knowledge
- Knowledge of external aerodynamics
- Basic MATLAB knowledge for post-processing
- Knowledge of Fluent dynamic and overset meshing
- Knowledge of Fluent 6DOF UDFs
- Knowledge of Fluent external aerodynamics best practices
- Understanding of pressure-based and density-based solver applicability
- Experience with adaptive meshing, cluster job submission using PBS scripts, and RSM
- Experience using TUI journals for workflow automation
- Experience with parametric optimization through OptiSLang and parameterization through SpaceClaim and Fluent
- Experience with ANSYS Fluent, STAR-CCM+, or other commercial CFD software
- Background in combustion, CFD, aerodynamics, aerothermodynamics, scramjet CFD modeling, propulsion, or liquid propellant rocket engine physics
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The Company
What We Do
CADFEM India Pvt Ltd is the Indian operation of CADFEM, a simulation and digital-engineering provider. The company supplies engineering simulation software and hardware, supports Ansys users, and delivers consulting, implementation, engineering, workflow-automation, and training services. Its solutions help organizations apply numerical simulation in product development and research, with expertise spanning many industries and applications, including aerospace and defense. The India role specifically serves government aerospace and defense customers.
