Simulation of the oil storage process in the scopa of specialized bees
Simulation of the oil storage process in the scopa of specialized bees
Dokument öffnen (21MB)Datum der Veröffentlichung
06.2014Verlag / herausgebende Einrichtung
Institut für Numerische Simulation (INS)Verlagsort
BonnMetadaten
Zur Langanzeige
Zitierbarer Link (Handle URI) 
https://hdl.handle.net/20.500.11811/11911
Inhalt
Several species of specialized bees possess special structures to store and transport floral oils. By using closely spaced hairs at their back legs, the so called scopa, these bees can absorb and release oil droplets without loss. The high efficiency of this process is a matter of ongoing research. Based on recent x-ray microtomography scans from a bee’s scopa, we build a three-dimensional geometric computer model. Then, using NaSt3DGPF, a two-phase flow solver developed at the Institute for Numerical Simulation, we compute the micro flow in the scopa model. Our calculations reveal the laminar to turbulent air flow in the scopa during flight. Furthermore, we simulate the deformation of an oil droplet in the scopa due to surface tension effects on a microscopic length scale. Our results are in good agreement with measurements for an oil-wetted scopa at steady state which are obtained from x-ray scans. Both simulations are relevant for the understanding of the process of oil absorption and transportation in the real scopa of a bee. Due to the large computational complexity of the problem, massively parallel computations are essential for our simulations.
Schlagwörter
bee morphology, two-phase flow, high-performance computing, large eddy simulation, simulation on x-ray computed tomography data
Klassifikation (DDC)
510 Mathematik 518 Numerische AnalysisErstpublikation
https://ins.uni-bonn.de/publication/preprintsZugehörige Publikation(en)
https://doi.org/10.1016/j.compfluid.2015.06.029Reihe, Nummer
INS Preprints ; 1404Rüttgers, Alexander; Griebel, Michael; Pastrik, Lars; Schmied, Heiko; Wittmann, Dietmar; Scherrieble, Andreas; Dinkelmann, Albrecht; Stegmaier, Thomas: Simulation of the oil storage process in the scopa of specialized bees. In: INS Preprints, 1404.
Online-Ausgabe in bonndoc: https://hdl.handle.net/20.500.11811/11911
Online-Ausgabe in bonndoc: https://hdl.handle.net/20.500.11811/11911
@unpublished{handle:20.500.11811/11911,
author = {{Alexander Rüttgers} and {Michael Griebel} and {Lars Pastrik} and {Heiko Schmied} and {Dietmar Wittmann} and {Andreas Scherrieble} and {Albrecht Dinkelmann} and {Thomas Stegmaier}},
title = {Simulation of the oil storage process in the scopa of specialized bees},
publisher = {Institut für Numerische Simulation (INS)},
year = 2014,
month = jun,
INS Preprints},
volume = 1404,
note = {Several species of specialized bees possess special structures to store and transport floral oils. By using closely spaced hairs at their back legs, the so called scopa, these bees can absorb and release oil droplets without loss. The high efficiency of this process is a matter of ongoing research. Based on recent x-ray microtomography scans from a bee’s scopa, we build a three-dimensional geometric computer model. Then, using NaSt3DGPF, a two-phase flow solver developed at the Institute for Numerical Simulation, we compute the micro flow in the scopa model. Our calculations reveal the laminar to turbulent air flow in the scopa during flight. Furthermore, we simulate the deformation of an oil droplet in the scopa due to surface tension effects on a microscopic length scale. Our results are in good agreement with measurements for an oil-wetted scopa at steady state which are obtained from x-ray scans. Both simulations are relevant for the understanding of the process of oil absorption and transportation in the real scopa of a bee. Due to the large computational complexity of the problem, massively parallel computations are essential for our simulations.},
url = {https://hdl.handle.net/20.500.11811/11911}
}
author = {{Alexander Rüttgers} and {Michael Griebel} and {Lars Pastrik} and {Heiko Schmied} and {Dietmar Wittmann} and {Andreas Scherrieble} and {Albrecht Dinkelmann} and {Thomas Stegmaier}},
title = {Simulation of the oil storage process in the scopa of specialized bees},
publisher = {Institut für Numerische Simulation (INS)},
year = 2014,
month = jun,
INS Preprints},
volume = 1404,
note = {Several species of specialized bees possess special structures to store and transport floral oils. By using closely spaced hairs at their back legs, the so called scopa, these bees can absorb and release oil droplets without loss. The high efficiency of this process is a matter of ongoing research. Based on recent x-ray microtomography scans from a bee’s scopa, we build a three-dimensional geometric computer model. Then, using NaSt3DGPF, a two-phase flow solver developed at the Institute for Numerical Simulation, we compute the micro flow in the scopa model. Our calculations reveal the laminar to turbulent air flow in the scopa during flight. Furthermore, we simulate the deformation of an oil droplet in the scopa due to surface tension effects on a microscopic length scale. Our results are in good agreement with measurements for an oil-wetted scopa at steady state which are obtained from x-ray scans. Both simulations are relevant for the understanding of the process of oil absorption and transportation in the real scopa of a bee. Due to the large computational complexity of the problem, massively parallel computations are essential for our simulations.},
url = {https://hdl.handle.net/20.500.11811/11911}
}
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