Projekt

How is turbulence affected by accelerations

Udbyder

Vejleder

Sted

København og omegn

Background:

Turbulence is the most important unsolved problem of classical physics. The Kolmogorov theory of turbulence, which is the basis for our current understanding, is based on an analogy between small and intermediate turbulent scales and molecules in a gas at a thermodynamic equilibrium. But even molecules can be pushed out of equilibrium, and turbulent eddies are significantly larger and more energetic!

Recent research is indicating that the Kolmogorov theory of turbulence is only valid when the flow is at a state of equilibrium, i.e., no significant temporal or spatial accelerations. 

Proposed projects

The project is practical research oriented, but has immediate application for turbulence theory and in particular turbulence modeling, which is widely used in industry.

The project can be conducted by 1-2 BSc or MSc students.

Lased Doppler anemometry or Hot-wire measurements will be conducted in a windtunnel within contractions of various aspect ratios. We will study how the accelerations caused by the contractions affect the turbulence in terms of energy spectra and other standard analysis. By investigating how the energy cascade develops (possibly different from the classical Richardson cascade), we expect to be able to draw conclusions about the range of validity of the Kolmogorov theory of turbulence.

This project is a pre-study to a major research grant, sponsored by the European Research Council. The study will provide important information for the further design of the experiments within the project.

The results will be immediately applicable to improving turbulence models as well as theory. From this project, you will gain a unique in-depth understanding of the physics of turbulence which will be of great value in virtually any industrial or academic discipline of fluid mechanics.

I samarbejde med

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Kontakt

Virksomhed/organisation

DTU Mekanik

Navn

Clara Marika Velte

Stilling

Lektor

Mail

cmve@dtu.dk

Vejleder-info

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41312, preferably also 41322 and/or 41129

Bachelor i Geofysik og Rumteknologi

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ECTS-point

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41312, preferably also 41322 and/or 41129

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ECTS-point

15 - 40

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41312, preferably also 41322 and/or 41129

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ECTS-point

15 - 40

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

41312, preferably also 41322 and/or 41129

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Vejleder

Clara Marika Velte

ECTS-point

15 - 40

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

41312, preferably also 41322 and/or 41129

Kandidatuddannelsen i Geofysik og Rumteknologi

Vejleder

Clara Marika Velte

ECTS-point

15 - 40

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

41312, preferably also 41322 and/or 41129

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Vejleder

Clara Marika Velte

ECTS-point

15 - 40

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

41312, preferably also 41322 and/or 41129

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Vejleder

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ECTS-point

15 - 40

Type

Bachelorprojekt, Kandidatspeciale, Specialkursus

Skal have taget

41312, preferably also 41322 and/or 41129

OM DTU

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Anker Engelunds Vej 1
Bygning 101A
2800 Kgs. Lyngby


45 25 25 25

dtu@dtu.dk

CVR-nr. 30 06 09 46

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