EGU2020-20786
https://doi.org/10.5194/egusphere-egu2020-20786
EGU General Assembly 2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Infiltration rate in unsaturated glass beads porous media under various gravity made by parabolic flight.

Naoto Sato1, Yuichi Maruo2, Kento Nogawa2, Natsumi Naganuma2, and Kosuke Noborio3
Naoto Sato et al.
  • 1Organization for the Strategic Coordination of Research and Intellectual Property, Meiji University, Japan (midorinonaoto@yahoo.co.jp)
  • 2Graduate School of Agriculture, Meiji University, Japan
  • 3School of Agriculture, Meiji University, Japan

The Global Exploration Roadmap targets the realization of Mars manned exploration by the 2030s. It is necessary to understand water movement in porous media under microgravity to establish a plant growth system for crop production for astronauts to produce food in outer space. In previous researches, a decrease in infiltration rate was reported for coarse (1.5 mm diameter) glass beads porous media. On the other hand,  in the case of fine (0.4 mm diameter) glass beads porous media, the amount of reduction in the infiltration rate was small. We wanted knowledge of water movement under partial gravity conditions. We conducted water infiltration experiments under microgravity, 1/6G, and 1/3G conditions made by parabolic flights. The 0.2, 0.4, and 0.6 mm glass beads were used as porous media. The effects of particle size and partial gravity on water infiltration in porous media will be discussed.

How to cite: Sato, N., Maruo, Y., Nogawa, K., Naganuma, N., and Noborio, K.: Infiltration rate in unsaturated glass beads porous media under various gravity made by parabolic flight., EGU General Assembly 2020, Online, 4–8 May 2020, EGU2020-20786, https://doi.org/10.5194/egusphere-egu2020-20786, 2020

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