Refine
Year of publication
Document Type
- Article (330)
- Conference Proceeding (137)
- Book (118)
- Part of a Book (86)
- Report (19)
- Doctoral Thesis (6)
- Contribution to a Periodical (2)
- Course Material (2)
- Patent (2)
- Working Paper (2)
- Poster (1)
Keywords
- Kanalisation (4)
- metal structure (4)
- steel (4)
- Aachen / Fachhochschule Aachen / Fachbereich Bauingenieurwesen (3)
- Absolvententreffen (3)
- Alfha.net (3)
- Alumni (3)
- Fließgewässer (3)
- Geodatenbank (3)
- Geodatenhaltung (3)
- Geoinformationen (3)
- Geoinformationssystem (3)
- Kanalnetz (3)
- industrial research (3)
- iron and steel industry (3)
- materials technology (3)
- research report (3)
- Abwasser (2)
- Bauplanung (2)
- Bemessung (2)
Institute
- Fachbereich Bauingenieurwesen (705) (remove)
Accurate determination of free-surface dynamics has attracted much research attention during the past decade and has important applications in many environmental and water related areas. In this study, the free-surface dynamics in several turbulent flows commonly found in nature were investigated using a synchronised setup consisting of an ultrasonic sensor and a high-speed video camera. Basic sensor capabilities were examined in dry conditions to allow for a better characterisation of the present sensor model. The ultrasonic sensor was found to adequately reproduce free-surface dynamics up to the second order, especially in two-dimensional scenarios with the most energetic modes in the low frequency range. The sensor frequency response was satisfactory in the sub-20 Hz band, and its signal quality may be further improved by low-pass filtering prior to digitisation. The application of the USS to characterise entrapped air in high-velocity flows is also discussed.