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HZDR and GRUNDFOS - STUDENT PROJECTS IN FLUID MECHANICAL ENGINEERING (Id 208)

No current offer!

Foto: Figure 1 CFD ©Copyright: GrundfosAre you looking for a student opportunity to sharpen your competencies and use your theoretical knowledge in an excellent research environment at HZDR together with the innovation driven global company Grundfos? And would you like to participate in developing the next generation of technologies and products for the world’s leading pump manufacturer? We are looking for talented Fluid Mechanical Engineering students.

As an engineering student, you will join the CFD department of HZDR in Dresden/Germany and also work at the department in Grundfos Research & Development in Denmark. You will get the opportunity to work with both, scientists and industrial specialists. You will get to apply the latest advanced engineering tools for designing, evaluating and optimizing fluid mechanical systems and hydraulic components.

Project: CFD simulation of bubbles dynamics in pump’s cooling system

Keywords
Cooling system, Multiphase flow, Bubbles dynamics, Turbomachinery

Objectives
CFD simulation of air accumulation in pump cooling system

Project description
Designing efficient cooling system for motors plays crucial role in pump manufacturing. Within the cooling system there is always a certain amount of air which can accumulate and form air pockets in critical areas, which can lead to noise and undermine sensors performance. A Computational Fluid Dynamics (CFD) method can be applied to simulate the cooling system and demonstrate air accumulation. Such a model provides deep understanding of bubble dynamics in the system and enables engineers for optimizing the system and increases its efficiency.

It is expected that the CFD model can handle:

  • Bubble dynamics in a pump cooling system. How do bubbles of different size behave in the fluid depending on the fluid velocity (drag versus buoyancy).
  • Suggestion of the fluid system, with the same transport of heat, but where the bubbles can stay out of the impeller thereby avoiding them to be divided into smaller bubbles.
  • How to design a placement of the sensor, where bubbles do not enter the zone around the sensor.

The experimental results show that if 0.3 vol. % air is mixed into small bubbles, then the sound in the sensor is absorbed. Therefore, the model should be able to handle very small bubble fraction.

Institute: Institute of Fluid Dynamics

Contact: Dr. Höhne, Thomas

Requirements

Application
Desirable is a good to very good grade point average. You are creative and like to bring in new ideas. Reliability, independence and structured work characterize your personality. You have experience in the relevant areas and you have good MS Office skills. You can quickly familiarize yourself with new tasks, get involved in a motivated team and have very good English skills. We look forward to meeting you!

  • Started studies in process engineering, chemical engineering, mechanical engineering or similar
  • Interest in numerical work
  • CFD knowledge (ANSYS CFX or OPENFOAM) and programming experience are an advantage
We offer exciting and challenging tasks, motivated, collegial and international working environment, and active support in the implementation of your tasks as well as decision latitude and responsibility. Your work places will be Dresden, Germany and Aarhus, Denmark.

Conditions

Please indicate in your application the earliest possible start and the desired duration of your activity.

  • Work can start immediately
  • Remuneration of work, financial support of your stay in Denmark
  • Duration min. 6 month
If you have questions or want to hear more about a student project, please contact Dr. Thomas Höhne, Senior Scientist at HZDR (t.hoehne@hzdr.de) and/or Senior Development Engineer at Grundfos, Maryam Momeni (mmomeni@grundfos.com).