Original title:
Bubble dynamics in drinks
Authors:
Broučková, Zuzana ; Trávníček, Zdeněk ; Šafařík, P. Document type: Papers Conference/Event: Experimental Fluid Mechanics 2013, Kutná hora (CZ), 2013-11-19 / 2013-11-22
Year:
2013
Language:
eng Abstract:
This study introduces two physical effects known from beverages: the effect of sinking bubbles and the hot chocolate sound effect. The paper presents two simple „kitchen” experiments. The first and second effects are indicated by means of a flow visualization and microphone measurement, respectively. To quantify the second (acoustic) effect, sound records are analyzed using time-frequency signal processing, and the obtained power spectra and spectrograms are discussed.
Keywords:
bubbles; hot chocolate effect; visualization Project no.: GCP101/11/J019 (CEP) Funding provider: GA ČR Host item entry: Experimental Fluid Mechanics 2013, ISBN 978-80-260-5375-0
Institution: Institute of Thermomechanics AS ČR
(web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences. Original record: http://hdl.handle.net/11104/0228818