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Nuclear Computational Fluid Dynamics Engineer Jobs

Thermon

Computational Fluid Dynamics Analyst

Seguin, TX · On-site

The Role Under supervision, provides Finite Element Analysis (FEA) and Computational Fluid Dynamics ... Responsible for providing engineering support to Thermon subsidiaries and clients. * Provides ...

Thermon

Computational Fluid Dynamics Analyst

Seguin, TX · On-site

The Role Under supervision, provides Finite Element Analysis (FEA) and Computational Fluid Dynamics ... Responsible for providing engineering support to Thermon subsidiaries and clients. * Provides ...

The Pennsylvania State University

The CFD Division Head will lead a premier group of approximately fifteen of engineers and research ... Lead technical developments and improvements in field of Computational Fluid Dynamics including but ...

Thermon

Computational Fluid Dynamics Analyst

Seguin, TX · On-site

The RoleUnder supervision, provides Finite Element Analysis (FEA) and Computational Fluid Dynamics ... Key Responsibilities and AccountabilitiesResponsible for providing engineering support to Thermon ...

AVTC Group

CFD Fluids Engineer

Titusville, FL · On-site

Senior CFD / Fluid Dynamics Engineer We are seeking an experienced and versatile Senior CFD / Fluid Dynamics Engineer to provide advanced computational fluid dynamics and multi-physics analysis ...

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Nuclear Computational Fluid Dynamics Engineer information

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$105.6K

$150K

How much do nuclear computational fluid dynamics engineer jobs pay per year?

As of Sep 14, 2026, the average yearly pay for nuclear computational fluid dynamics engineer in the United States is $105,594.00, according to ZipRecruiter salary data. Most workers in this role earn between $98,500.00 and $118,000.00 per year, depending on experience, location, and employer.

What does a nuclear computational fluid dynamics engineer do?

A Nuclear Computational Fluid Dynamics (CFD) Engineer specializes in using advanced simulation software to analyze fluid flow, heat transfer, and related phenomena within nuclear systems. Their work helps optimize the design, safety, and efficiency of reactors and associated components by predicting how fluids (such as coolants) behave under various operating conditions. These engineers collaborate with multidisciplinary teams to ensure regulatory compliance and solve complex problems in nuclear engineering projects. Their expertise is crucial for safe and efficient nuclear power generation.

What are the key skills and qualifications needed to thrive as a nuclear computational fluid dynamics engineer?

To thrive as a Nuclear Computational Fluid Dynamics Engineer, you need a strong background in nuclear engineering, fluid mechanics, thermodynamics, and advanced mathematics, typically supported by a relevant engineering degree (often a master's or Ph.D.). Proficiency in CFD software (such as ANSYS Fluent or OpenFOAM), high-performance computing, and familiarity with nuclear simulation codes and safety standards is essential. Strong analytical thinking, problem-solving abilities, and effective communication skills are crucial for interpreting results and collaborating with multidisciplinary teams. These competencies ensure accurate modeling, safe reactor design, and compliance with regulatory requirements in the nuclear energy sector.

What are some common challenges faced by nuclear computational fluid dynamics engineers when simulating reactor systems?

Nuclear Computational Fluid Dynamics (CFD) Engineers often encounter challenges related to the complexity of multiphase flows, high-fidelity modeling requirements, and the need to accurately simulate heat transfer in reactor environments. Ensuring that the computational models align with real-world experimental data can be demanding, especially given the safety-critical nature of nuclear systems. Collaboration with reactor physicists, thermal-hydraulic engineers, and safety analysts is essential to validate models and interpret results effectively. Additionally, staying current with advancements in CFD software and high-performance computing is crucial for producing reliable simulations.

What is the difference between Nuclear Computational Fluid Dynamics Engineer vs Nuclear Reactor Engineer?

AspectNuclear Computational Fluid Dynamics EngineerNuclear Reactor Engineer
Primary FocusSimulating fluid flow and heat transfer in nuclear systems using computational methodsDesign, operation, and safety analysis of nuclear reactors
Required CredentialsEngineering degree, CFD certifications, knowledge of nuclear systemsEngineering degree, reactor operation licenses, safety certifications
Work EnvironmentResearch labs, simulation centers, nuclear facilitiesNuclear power plants, research reactors, regulatory agencies

While both roles require a strong engineering background and knowledge of nuclear systems, Nuclear Computational Fluid Dynamics Engineers specialize in modeling fluid behaviors within nuclear environments, whereas Nuclear Reactor Engineers focus on the overall design, safety, and operation of nuclear reactors. The two roles often collaborate but have distinct technical focuses.

What are popular job titles related to Nuclear Computational Fluid Dynamics Engineer jobs?

For Nuclear Computational Fluid Dynamics Engineer jobs, the most frequently searched job titles are:

Infographic showing various Nuclear Computational Fluid Dynamics Engineer job openings in the United States as of September 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $105,594 per year, or $50.8 per hour.

Computational Physicist - Fluid Dynamics

Denver, CO • On-site

Xcimer Energy
See more jobs at Xcimer Energyexternal

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 14 days ago

Job description

Xcimer Energy leverages decades of research on Inertial Fusion Energy (IFE) combined with groundbreaking new laser architecture. Our mission is to deploy fusion power plants to meet global decarbonization goals as fast as possible. Xcimer has assembled a team of leaders in tough tech, fusion science, and manufacturing with a track record of rapid execution. Supportedby leading investors, Xcimer is uniquely positioned to deliver limitless, clean, fusion power to combat climate change.Join us in powering a better world with inertial fusion! 
This is a full-time, onsite role based at our headquarters in Denver, CO.
 
As a Computational Physicist (Fluid Dynamics) at Xcimer, you will contribute to the theoretical and computational development of multi-material radiation hydrodynamics models that support inertial confinement fusion (ICF). This role focuses on numerical methods for computational fluid dynamics (CFD), with emphasis on high-fidelity modeling of complex multi-physics systems relevant to fusion energy.
 
You will work closely with senior scientists and software engineers to develop, analyze, verify, and validate numerical methods and simulation capabilities within Xcimer's radiation hydrodynamics codebase. This is a hands-on technical role that blends mathematical modeling, numerical analysis, and high-performance scientific computing.
 
The ideal candidate brings deep expertise in numerical methods for fluid dynamics, hands-on experience with invariant-domain preserving (IDP) methods, strong experience with finite element frameworks (particularly deal.II), and the ability to contribute meaningfully to code development, scientific publications, and collaborative research efforts.
Responsibilities

Multi-Material & Radiation Hydrodynamics Modeling

  • Implement and improve multi-material modeling approaches (e.g., interface tracking/capturing, mixture models, or related techniques).

  • Support coupling of hydrodynamics with radiation transport and other relevant physics modules for various equation of state and opacity models.

  • Assist in developing robust algorithms for extreme thermodynamic and flow regimes relevant to ICF.

Numerical Methods & Theoretical Development

  • Develop and analyze certifiably robust, invariant-domain preserving (IDP) numerical methods for computational fluid dynamics with emphasis on multi-material flows.

  • Contribute to mathematical modeling for multi-material systems relevant to inertial confinement fusion.

  • Support development of radiation hydrodynamics formulations, discretizations, and stabilization strategies.

  • Investigate accuracy, stability, and convergence properties of numerical schemes.

  • Contribute to solving complex inverse and forward problems in high-energy-density physics.

Verification, Validation & Scientific Rigor

  • Collaborate with Xcimer's verification and validation function to validate multi-material numerics, contributing domain expertise on expected physical behavior.

  • Contribute multi-material test problems and physical judgment to the shared benchmark suite.

  • Help ensure multi-material results are reproducible and scientifically credible, in partnership with the team that owns V&V methodology.

Communication & Collaboration

  • Collaborate closely with physicists, applied mathematicians, and software engineers.

  • Contribute to internal technical documentation and external scientific publications.

  • Present findings in technical meetings and contribute to peer-reviewed journal articles and conference papers.

Qualifications
  • Education: Ph.D. in Mathematics (preferred), Applied Mathematics, Computational Physics, or a closely related field, with a focus on numerical methods for fluid dynamics.
  • Strong background in numerical analysis for PDEs, particularly for fluid dynamics.
  • Hands-on experience with invariant-domain preserving (IDP) methods or comparable certifiably robust discretization frameworks for hyperbolic/compressible flow.
  • Experience with finite element methods and hands-on development using deal.II (strongly preferred) or similar frameworks.
  • Experience developing scientific software in C++.
  • Experience working in high-performance computing environments (MPI-based parallelism and large-scale simulations).
  • Familiarity with multi-material modeling techniques in CFD.
  • Experience with verification and validation of numerical methods.
  • Strong written and verbal communication skills, with demonstrated ability to contribute to scientific publications.
  • Must be a U.S. citizen or national, U.S. permanent resident (current Green Card holder), or lawfully admitted into the U.S. as a refugee or granted asylum.
Desired
  • Background in radiation hydrodynamics, high-energy-density physics, or related multi-physics domains.
  • Experience with mathematical modeling for multi-material compressible flows.
  • Experience coupling hydrodynamics with radiation transport.
  • Experience contributing to large, research-grade scientific codebases.
  • Demonstrated ability to balance theoretical rigor with practical computational implementation.
$160,000 - $200,000 a year
Candidates may be considered for other positions at Xcimer Energy, and our actual base salary will be determined on an individual basis and may vary based on job-related knowledge and skills, education, and experience. The range is published in accordance with Colorado Equal Pay for Equal Work Act and California Equal Pay Act.
Equal Employment Opportunity
Xcimer Energy is proud to be an Equal Opportunity/Affirmative Action Employer and is committed to attracting, retaining, and developing a highly qualified, diverse, and dedicated work force. Xcimer Energy hires and promotes people on the basis of their qualifications, performance, and abilities. We support the establishment and maintenance of a workplace that fosters trust, equality, and teamwork, in which all employees recognize and appreciate the diversity of individual team members. We provide all qualified applicants for employment and employees with equal opportunities for hire, promotion, and other terms and conditions of employment, regardless of their race, color, religion, gender, sexual orientation, gender identity, national origin/ethnicity, age, physical or mental disability, genetic factors, military/veteran status, or any other status or characteristic protected by federal, state, and/or local law. Xcimer Energy will consider for employment qualified applicants with criminal histories in a manner consistent with applicable federal, state, and local laws. For more information on "EEO Is the Law," please see here and here.
 
Benefits
Xcimer offers a comprehensive benefits package designed to support employee health, well-being, and long-term success. Benefits include medical, dental, and vision coverage; basic and supplemental life insurance; short- and long-term disability; paid parental leave for employees at the time of birth or adoption; and a 401(k) with a company match of up to 6%. Eligible employees also receive equity, allowing them to share in the company's long-term success.
Xcimer operates under a flexible Paid Time Off (ATO) approach. Rather than a fixed number of vacation days, employees are trusted to take the time they need to rest and recharge while meeting the expectations of their role and team. In addition, employees receive paid sick time, 13 company-paid holidays, and an annual paid company shutdown. Benefits are available to regular employees, including part-time and fixed-term roles, as well as interns, with eligibility varying by benefit.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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