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Scientific activities / projects

Development and implementation of an aeroacoustic simulation method for installed propulsors

Starting date

immediately

Duration of contract

3,5 years

Remuneration

According to the German TVöD 13

Type of employment

Full-time

"Cutting-edge research requires excellent minds – particularly more females – at all levels. Launch your mission with us and send in your application now!" Prof. Pascale Ehrenfreund - Chair of the DLR Executive Board

Your mission:

The position reflects the participation in the Excellence cluster SE2A led by TU Braunschweig. The objective is to develop a non-empiric simulation method allowing to predict sourcewise and radiationwise the noise generated as a result of the installation of propulsors on largely arbitrary aircraft configurations. Subsequentially, the acoustic propulsor  integration is to be investigated for various aircraft configurations proposed by partners in SE2A. 

Development and implementation of an aeroacoustic simulation method for installed propulsors

  • literature study on respective simulation methods
  • development of a concept for fast, non-empiric prediction of aerodynamic source noise due to the integration of propulsors at an aircraft
  • planning of implementation of simulation concept into CAA Code PIANO or DISCO++
  • implementation of postprocessing of CFD data, interface/source description in CAA Code, and  coupling to acoustic wave equation solver FMCAS
  • test of the scheme’s stability as a function of interfaces and computation grids
  • test at isolated propellers with constant and non-constant blade loads (homogeneous oblique inflow), and installed propulsors
  • comparison with (if available) analytical solutions and data from previous projects on installed propellers (projects BNF, CESAR, SFB880).
  • determination of  the prediction accuracy due to model assumptions

Investigation of propulsor integration noise at reference aircraft

  • definition of a suitable near field metric for the assessment of installation noise as part of aircraft design (co-operation with project SE2A B5-1)
  • implementation of suitable interface for DLR-PANAM Code for the simulation of  the noise radiation of complete aircraft (co-operation with AS-HEL Göttingen)
  • prediction of sourcewise installation noise at three SE2A reference aircraft configurations
  • prediction of complete installation noise including the acoustic interaction with the aircraft geometry for one reference aircraft by coupling of source data into fast wave equation solver FMCAS

Your qualifications:

  • scientific MSc. in Aeronautics or Mechanical Engineering
  • knowledge on aeroacoustics and/or aerodynamics and respective numerical methods
  • programming skills (Fortran, C, C++, Python) in technical/scientific context, CAD experience
  • use of LINUX and WINDOWS based computer architectures
  • good proficiency of written and spoken English
  • good teamplayer
  • good proficiency of written and spoken German is an advantage

Your benefits:

Look forward to a fulfilling job with an employer who appreciates your commitment and supports your personal and professional development. Our unique infrastructure offers you a working environment in which you have unparalled scope to develop your creative ideas and accomplish your professional objectives. Our human resources policy places great value on a healthy family and work-life-balance as well as equal opportunities for persons of all genders (m/f/non-binary). Individuals with disabilities will be given preferential consideration in the event their qualifications are equivalent to those of other candidates.

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Technical contact

Prof. Dr. Jan Werner Delfs
Institute of Aerodynamics and Flow Technology

Phone: +49 531 295-2170

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Vacancy 37731

HR department Braunschweig

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DLR site Braunschweig

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DLR Institute of Aerodynamics and Flow Technology

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