Postdoctoral Appointee-Developing an Exascale MuPhFASa (Multi Phase Flow Adaptive Simulator)

Argonne National Laboratory; Illinois; On-site; USD 73,000 - 121,000; Full time

Job summary

Argonne National Laboratory in Illinois is seeking a Postdoctoral Appointee to develop computational fluid dynamics tools for exascale computing, leveraging AMReX and the lattice Boltzmann method to enable broader access to high-fidelity simulations on the Aurora system.

The position emphasizes scalable solvers, physics-based adaptation strategies, and collaboration across the CPS division to solve bubbly flows, emulsions, sedimentation and other complex multiphase problems, with a strong focus

Qualifications

• Recent or soon-to-be-completed Ph.D. in mechanical/aerospace/chemical engineering, applied mathematics or a related discipline.
• Experience in numerical methods and CFD development using mesh-based scientific codes.
• Expertise in the lattice Boltzmann method (LBM) as evidenced by their publications.
• High performance computing (HPC) experience in code development with parallel programming techniques using the message passing interface (MPI) library.
• Proficiency in writing code with C, C++ and/or Python.
• Ability to demonstrate strong written and oral communication skills.
• Ability to model Argonne's Core Values: Impact, Safety, Respect, Integrity, and Teamwork.

Responsibilities

• Develop a massively parallel CFD solver for Aurora using AMReX and LBM.
• Create flow/geometry-aware refinement strategies for efficient simulations.
• Collaborate with CPS and Argonne teams on exascale computing challenges.
• Publish results and contribute to advancing high-performance CFD methods.

Skills

CFD development

LBM expertise

MPI parallel programming

C/C++/Python proficiency

Written and oral communication

Argonne Core Values alignment

Education

Ph.D. in mechanical/aerospace/chemical engineering, applied mathematics or related discipline

Tools

AMReX

MPI

CUDA

SYCL

HIP

OpenMP

Job description

The Argonne Leadership Computing Facility's (ALCF) mission is to accelerate major scientific discoveries and engineering breakthroughs for humanity by designing and providing world-leading computing facilities in partnership with the computational science community. We help researchers solve some of the world's largest and most complex problems with our unique combination of supercomputing resources and computational science expertise.

The Computational Science (CPS) Division focuses on solving the most challenging scientific problems through advanced modeling and simulation on the most capable computers. The division aims to build lab-wide cross-cutting simulation application capabilities integrating with mathematics, computer science, domain science, and advanced computing architectures and facilities. Additionally, the CPS provides an interdisciplinary home for spawning simulation programs and projects, often in collaboration with the ALCF.

The ALCF and CPS division are seeking a postdoctoral appointee to develop computational fluid dynamic (CFD) tools that make exascale computing accessible to a broader set of users. The successful candidate will develop a massively parallel solver, capable of running simulations on the Aurora supercomputer, using AMReX ( https://amrex-codes.github.io/amrex/ ) and the lattice Boltzmann method (LBM). The candidate will develop flow/geometry-aware refinement strategies that go beyond traditional error estimators, creating physics-based adaptation algorithms that intelligently predict where refinement will be most beneficial for smarter, more efficient simulations. We seek someone with a strong CFD background and LBM expertise who can develop methodologies broad enough to tackle a diverse set of problems, appealing to a wide range of computational science users. Example problems are: bubbly flow, emulsions, sedimentation, wetting, gas-mixing, red-blood cell flow in the human vasculature. We are seeking a candidate who is intellectually curious and enthusiastic about computational research. They are intrinsically driven, goal-oriented, and can work collaboratively with others.

Position Requirements

Required Skills

• Recent or soon-to-be-completed Ph.D. (typically completed in the last 5 years) in mechanical/aerospace/chemical engineering, applied mathematics or a related discipline.
• Experience in numerical methods and CFD development using mesh-based scientific codes.
• Expertise in the lattice Boltzmann method (LBM) as evidenced by their publications
• High performance computing (HPC) experience in code development with parallel programming techniques using the message passing interface (MPI) library
• Proficiency in writing code with C, C++ and/or Python
• Ability to demonstrate strong written and oral communication skills
• Ability to model Argonne's Core Values: Impact, Safety, Respect, Integrity, and Teamwork.

Desired Skills

• Experience with two-phase/multi-phase flows as evidenced by their publications
• Experience programming GPUs with CUDA, SYCL, HIP or OpenMP
• Experience using and developing code with AMReX
• Experience in performance engineering to improve code scalability and reduce time-to-solution

Job Family

Postdoctoral

Job Profile

Postdoctoral Appointee

Worker Type

Long-Term (Fixed Term)

Time Type

Full time

The expected hiring range for this position is $72,879.00-$121,465.00.

Please note that the pay range information is a general guideline only. The pay offered to a selected candidate will be determined based on factors such as, but not limited to, the scope and responsibilities of the position, the qualifications of the selected candidate, business considerations, internal equity, and external market pay for comparable jobs. Additionally, comprehensive benefits are part of the total rewards package.

Click here https://www.anl.gov/hr/healthcare-insurance to view Argonne employee benefits!

As an equal employment opportunity employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a safe and welcoming workplace that fosters collaborative scientific discovery and innovation. Argonne encourages everyone to apply for employment. Argonne is committed to nondiscrimination and considers all qualified applicants for employment without regard to any characteristic protected by law.

Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Dep