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RWTH Aachen - Chair of Fluid Mechanics and Institute of Aerodynamics

The Chair of Fluid Mechanics and Institute of Aerodynamics belong to the Faculty of Mechanical Engineering of the RWTH Aachen University. The institute is composed of the experimental and numerical divisions and the biomedical fluid dynamics laboratory. With approx. 30 publicly and industrially funded research projects and an annual level of expenditure of around 2.0 Mio. €, the Chair of Fluid Mechanics and Institute of Aerodynamics belong to the strongest university research institutes in the field of fluid dynamics in Germany.

The research group

Newly installed research group within the Emmy Noether program of the German Research Foundation (DFG): „Separation control with Air Jet Vortex Generator arrays in transonic and supersonic flow“.

The project

Shock-induced flow separation strongly influences the aerodynamic behavior of many applications in aerospace transportation. The ubiquity and strong influence of these flows motivated great efforts to develop methods that reduce the detrimental effects of separation. This project investigates a promising and very versatile technique: Air Jet Vortex Generators (AJVGs). An array of small continuous air jets inserts vortices into the boundary layer. The vortices entrain high-momentum fluid and increase turbulent mixing, which leads to smaller separation zones and a reduction of the associated unsteadiness. The system is relatively simple, yet more flexible than mechanical devices. Efficient control requires to understand the governing mechanisms in the uncontrolled flow field. This is the first main project goal. The second objective is to analyze the separation-control mechanisms and parameters of Air-Jet Vortex-Generator arrays. On this basis, the next aims are optimized control setups for more complex models, simulating the relevant effects for transonic airfoils and inlets of supersonic air-breathing engines. The last goal is to expand separation control towards higher speeds important for novel space-transportation concepts and to assess the Mach number influence on the control concept. To get access to data of a quality that could not be achieved before, and to get a multilayered access to the problem, the group approaches these tasks with closely intertwined experimental and numerical methods.

Postdoctoral Research Assistant

Work­ing field:

  • You have the oppor­tun­ity to con­trib­ute to an ambi­tious research pro­ject and to be part of a motiv­ated inter­dis­cip­lin­ary research group.
  • You will carry out numer­ical sim­u­la­tion of the invest­ig­ated sep­ar­a­tion con­trol setups as well as the com­par­at­ive baseline cases, both in exchange with the exper­i­mental invest­ig­a­tions that are also car­ried out within the group. The data ana­lysis, inter­pret­a­tion and visu­al­iz­a­tion of res­ults will be car­ried out in close col­lab­or­a­tion with the exper­i­mental branch of the research group.
  • You will include stu­dents into the pro­ject and will super­vise Bach­elor and Mas­ter theses as well as stu­dent research assist­ants. Also the writ­ing of reports and pub­lic­a­tions in reviewed inter­na­tional journ­als will be part of your tasks, as well as the present­a­tion of your research res­ults in national and inter­na­tional con­fer­ences.
  • A sci­entific work­shop will take place in the third year of the pro­ject, and you will be involved in the organ­iz­a­tion of this work­shop.

Require­ments:

  • Applic­ants must have a doc­tor­ate/Ph.D. or equi­val­ent.
  • You hold a uni­versity degree (Mas­ter of Sci­ence or com­par­able) in the fields of mech­an­ical or aerospace engin­eer­ing or math­em­at­ics with above-aver­age grades. You have com­pleted your doc­toral degree in the area of numer­ical fluid dynam­ics with an excel­lent grade. You have suc­cess­fully pub­lished first art­icles in the peer-reviewed journ­als rel­ev­ant for your field.
  • You are ambi­tious, are motiv­ated to work in aca­demia, and are inspired by your research topic and sci­entific work. You carry out your work thor­oughly and inde­pend­ently. Fur­ther­more, you are motiv­ated to col­lab­or­ate closely within this exper­i­mental/numer­ical research group as well as with pro­ject part­ners.
  • Your pro­found know­ledge on com­press­ible flow and tur­bu­lence is com­bined with pro­found meth­od­ical skills in the numer­ical sim­u­la­tion of com­press­ible tur­bu­lent flows, par­tic­u­larly with Large Eddy Sim­u­la­tions. You have excel­lent oral and writ­ten Eng­lish lan­guage skills.

What we of­fer:

The pos­i­tion is for 2 years and is to be filled as soon as pos­sible. This is a full-time pos­i­tion.
The salary cor­res­ponds to level TV-L EG 13.

RWTH Aachen Uni­versity is cer­ti­fied as a "Fam­ily-Friendly Uni­versity". We par­tic­u­larly wel­come and encour­age applic­a­tions from women, dis­abled per­sons and eth­nic minor­ity groups, recog­niz­ing they are under­rep­res­en­ted across RWTH Aachen Uni­versity. The prin­ciples of fair and open com­pet­i­tion apply and appoint­ments will be made on merit.

How to ap­ply:

For further details, please contact
Dr.-Ing. Anne-Marie Schreyer
Tel.: +49 (0) 241 80 95188
Fax: +49 (0) 241 80 92257
Email: a.schreyer@aia.rwth-aachen.de

Please send your application by July 14, 2017 to
Chair of Fluid Mechanics and
Institute of Aerodynamics
Dr.-Ing. Anne-Marie Schreyer
Wüllnerstr. 5a
52062 Aachen

You can also send your application via email to a.schreyer@aia.rwth-aachen.de. Please note, however, that communication via unencrypted e-mail poses a threat to confidentiality as it is potentially vulnerable to unauthorized access by third parties.