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Description
  • We present an experimental and theoretical analysis of the hot chocolate effect. The sound effect is evaluated using time-frequency signal processing, resulting in a quantitative visualization by spectrograms. This method allows us to capture the whole phenomenon, namely, to quantify the dynamics of the rising pitch. A general form of the time dependence volume fraction of the bubbles is proposed. We show that the effect occurs due to the nonlinear dependence of the speed of sound in the gas/liquid mixture on the volume fraction of the bubbles and the nonlinear time dependence of the volume fraction of the bubbles.
  • We present an experimental and theoretical analysis of the hot chocolate effect. The sound effect is evaluated using time-frequency signal processing, resulting in a quantitative visualization by spectrograms. This method allows us to capture the whole phenomenon, namely, to quantify the dynamics of the rising pitch. A general form of the time dependence volume fraction of the bubbles is proposed. We show that the effect occurs due to the nonlinear dependence of the speed of sound in the gas/liquid mixture on the volume fraction of the bubbles and the nonlinear time dependence of the volume fraction of the bubbles. (en)
Title
  • Visualization of the hot chocolate sound effect by spectrograms
  • Visualization of the hot chocolate sound effect by spectrograms (en)
skos:prefLabel
  • Visualization of the hot chocolate sound effect by spectrograms
  • Visualization of the hot chocolate sound effect by spectrograms (en)
skos:notation
  • RIV/61388998:_____/12:00379958!RIV13-AV0-61388998
http://linked.open...avai/predkladatel
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(GCP101/11/J019), P(IAA200760801), Z(AV0Z20760514)
http://linked.open...iv/cisloPeriodika
  • 25
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
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  • 177587
http://linked.open...ai/riv/idVysledku
  • RIV/61388998:_____/12:00379958
http://linked.open...riv/jazykVysledku
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  • hot chocolate effect; gas-liquid mixture; speed of sound (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [049C2567B47B]
http://linked.open...i/riv/nazevZdroje
  • Journal of Sound and Vibration
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  • 331
http://linked.open...iv/tvurceVysledku
  • Hrubý, Jan
  • Trávníček, Zdeněk
  • Fedorchenko, Alexander I.
  • Pavelka, Miroslav
http://linked.open...ain/vavai/riv/wos
  • 000309296500001
http://linked.open...n/vavai/riv/zamer
issn
  • 0022-460X
number of pages
http://bibframe.org/vocab/doi
  • 10.1016/j.jsv.2012.07.038
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