Polyhedral Mesh Generation for Multiphysics Nuclear Simulation (MOOSE) Intern - Summer 2027

Posting description Developing advanced nuclear energy systems requires extensive modeling and simulation to demonstrate safety and operational characteristics without relying on lengthy and expensive experimental campaigns. To support this need, the Department of Energy has been developing a complete suite of nuclear engineering tools at the National Laboratories. These tools offer full geometric flexibility by using unstructured meshes to discretize the geometry of the nuclear system. Whether representing fuel, cladding, or coolant, the geometry is captured as a tessellation of 3D space that can involve billions of finite elements. Tetrahedral meshes are a popular choice because of their generality and relative ease of generation, but hexahedral and polyhedral elements are preferred for certain classes of problems. The Multiphysics Object Oriented Simulation Environment (MOOSE) has recently been expanded to support polyhedral elements through its libMesh backend. This internship will build on that foundation by developing polygonal and polyhedral mesh generation capabilities, demonstrating appropriate spatial convergence of simulations on these meshes, and, as time permits, applying them to nuclear engineering simulation problems. The intern will gain hands-on experience with a widely used open-source multiphysics framework, unstructured mesh generation, and finite element verification methods, while contributing directly to the simulation tools used to design and license advanced reactors. Reporting to the Multiphysic Computational Frameworks. This team works a 9x80s schedule onsite at our Idaho Falls Campus. Start date and duration of internship vary based on project and student availability. You may be eligible for course credit for this internship if approved by your university. Minimum Qualifications

• Enrolled full time in an Undergraduate degree program, Master degree program, or Doctorate degree program at an accredited college/university studying computer science, Mechanical Engineering, Computational Engineering or closely related.
• A minimum overall 3.0 GPA
• Authorization to work in the U.S. (including CPT and OPT)
• Current Resume or CV
• Unofficial Transcripts (include current and completed degree programs)
• Current class schedule and number of credits

The ideal candidate will possess

• Experience or coursework in C++ development, finite element analysis (FEA), FEA or FVA development

Compensation and Benefits

• Undergraduate Internships ($26.94/hour - $32.41/hour)
• Masters Internships ($35.34/hour - $37.73/hour)
• PhD Internships Pre-Candidacy ($36.83/hour - $39.33/hour)
• PhD Internships Post-Candidacy ($38.65/hour - $41.29/hour)
• Multi-Level: Internships are typically multi-level posting and you will be placed at the appropriate level dependent on degree field and level of education.

Physical requirement While performing the duties of this classification, the employee is frequently required to stand, walk, sit, stoop, kneel, bend, use hands to handle materials, manipulate tools, type on a keyboard, reach with hands and arms, and operate job-related equipment. The employee must occasionally lift and/or move up to 35 pounds without assistance. Sufficient visual acuity and hearing capacity to perform the essential functions and interact with people is required. Reasonable accommodation may be made to enable individuals with disabilities to perform the essential functions.

Benefits and Relocation

• Paid holiday time off
• Travel reimbursement may be available for eligible interns

At this time, BEA will not sponsor any H1-B visas obtained outside of the United States of America (U.S.A.), including consular visas.

INL is a science-based, applied engineering national laboratory dedicated to supporting the U.S. Department of Energy's mission in nuclear energy research, science, and national defense. With more than 6,300 scientists, researchers, and support staff, the laboratory works with national and international governments, universities and industry partners to change the world's energy future and secure our nation's critical infrastructure.

INL Mission:

Our mission is to discover, demonstrate and secure innovative nuclear energy solutions, other clean energy options and critical infrastructure.

INL Vision:

Our vision is to change the world's energy future and secure our nation's critical infrastructure.

Selective Service Requirements:

To be eligible for employment at INL males born after December 31, 1959 must have registered with the Selective Service System (SSS). For more information see www.sss.gov.

Equal Employment Opportunity:

Idaho National Laboratory (INL) is an Equal Employment Opportunity (EEO) employer. It is the policy of INL to provide equal employment opportunities to all qualified applicants without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, age, protected veteran or disabled status, or genetic information.

Reasonable Accommodation:

We will ensure that individuals with disabilities are provided reasonable accommodation to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment. Please contact us at ada@inl.gov to request accommodation.

Other Information:

When applying to positions please provide a resume and answer all questions on the following screens. Applicants, who fail to provide a resume or answer the questions, may be deemed ineligible for consideration.

INL does not accept resumes from third party vendors unsolicited.