Mechanical Engineering Internship: Investigation of higher-order MENC Models into AMEsim

Interns and Trainees

In a nutshell


Veldhoven, Netherlands


Interns and Trainees

Work Experience

0-1 year, N/A

Educational Background

Mechanical Engineering, Other technical backgrounds



Remote Work


Time Type

Full time

Job ID: J-00280328


Are you a Mechanical or Aerospace Engineering student? Do you have experience in network modeling for fluid flow system? Then this internship might be interesting for you!

Background Information

Mini Environment Network Calculator (MENC) has been in use for many years  in ASML to model rarefied gas flows in EUV scanner. It is an in-house 1D tool that has not not been maintained over a long period of time. In 2021, Flow Modeling Group of ASML and Siemens joined forces and started integrating MENC models into Simcenter AMEsim, thereby creating a new rarefied library in AMEsim.  As of July 3, the library is fully operational and online to all  ASML AMEsim users. Nevertheless, ASML have vision to further develop the existing physics models and to introduce new physics in the present code which is now exactly the same as it is in MENC. Therefore, the development of the AMEsim rarefied gas library now enters the next phase. 

During the initial development phase, the rarefied library has been validated with MENC but the validation has been limited so far to feature based analysis. To ensure AMEsim tool performs as expected for any vacuum system related problems, it is deemed important to investigate higher order network models.  The higher order models are already available in MENC and some of them need to be converted into AMEsim by using the rarefied gas library.

If we are able to see a good match between MENC and AMEsim for such models, it will eliminate doubt about AMEsim's  ability to handle larger flow networks for rarefied flows. We will then strive for automatic model conversions of the existing large MENC models (e.g., full EUV scanner) into AMEsim with confidence that they will work in AMEsim as good as they do in MENC.

Your Assignment

The assignment will be divided into the following incremental steps: 

  • Start from a basic model with less than 5 nodes and 2 species available in MENC (bulk flow and one contaminant) and build a similar model in AMEsim using the Rarefied gas library.
  • Develop a  single species wafer stage model in AMEsim similar to an available WS MENC model. The model has about 20 nodes and 40 links.  Compare the results between the two models. Results are usually pressures at the nodes, flow rates and flow directions. 
  • Prepare an RME model focusing on flow and contaminants in AMEsim from the full-scanner model built in MENC. Check how it performs compared to the MENC model in the RME region and with the available CFD models. 
  • Prepare a report summarizing model descriptions, problem approach, relevant results, comparison with mainly the MENC counterparts and provide recommendations on way of working.

Your Profile

To be a perfect match for this internship, you:

  • Are a master or bachelor student in the direction of Mechanical or Aerospace Engineering;
  • Have experience in network modeling for fluid flow system;
  • Preferably have experience in  AMEsim, EcoSim and/or MacroFlow or similar;
  • Experience with using High performance cluster is a plus;
  • Have strong analytical skills and a problem-solving mentality;
  • Should feel comfortable in approaching experts and arranging support independently.

This is an master or bachelor internship, both an apprentice or graduation, for the duration of 6 or more months, 5 days a week, starting as soon as possible.

Please note that we may only consider students who are enrolled as a student at their university for the whole duration of the internship.

This position requires access to U.S. controlled technology, as defined in the United States Export Administration Regulations. Qualified candidates must be legally authorized to access such U.S. controlled technology prior to beginning work. Business demands may require ASML to proceed with applicants who are immediately eligible to access U.S. controlled technology.

Diversity and inclusion

ASML is an Equal Opportunity Employer that values and respects the importance of a diverse and inclusive workforce. It is the policy of the company to recruit, hire, train and promote persons in all job titles without regard to race, color, religion, sex, age, national origin, veteran status, disability, sexual orientation, or gender identity. We recognize that diversity and inclusion is a driving force in the success of our company.  

Other information

Change the world – one nanometer at a time
Become an intern at a Dutch company that’s a global industry leader. You’ll gain valuable experience in a highly innovative environment – one that sparks your imagination and creativity. In addition to a monthly internship allowance of maximum €600 (plus a possible housing and/or travel allowance), you’ll get practical guidance from experts in the field and the chance to work in and experience a dynamic team environment.

ASML: be part of progress
ASML is a high-tech company headquartered in the Netherlands. We manufacture the complex lithography machines that chipmakers use to produce integrated circuits, or computer chips. What we do is at the heart of all the electronic devices that keep us informed, entertained and connected. Every day, you use electronics that simply wouldn’t exist without our machines.

Behind ASML’s innovations are engineers who think ahead. The people who work at our company include some of the most creative minds in physics, electrical engineering, mathematics, chemistry, mechatronics, optics, mechanical engineering, and computer science and software engineering.

We believe we can always do better. We believe the winning idea can come from anyone. We love what we do – not because it’s easy, but because it’s hard.

Students: getting ready for real-world R&D
We’re a global team of about 29,000 people of 120 different nationalities and counting. Headquartered in Europe’s top tech hub, the Brainport Eindhoven region in the Netherlands, our operations are spread across Europe, Asia and the US.

In such an environment, your colleagues may be sitting next door, or they could be thousands of kilometers away in a different country – or even working for a different company.

An internship at ASML is the opportunity to get to know not only the world of industrial-strength R&D, but yourself – you’ll discover just what excites you most. Will you design a part of the machine, or make sure it gets built to the tightest possible specifications? Will you write software that drives the system to its best performance, or work side-by-side with the engineers of our customers in a fab, optimizing a system to the requirements of the customer?

How will you be part of progress?


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