Experimental study of granular convection in (real) two- dimension Brazil-nut effect

6th Asian Physics Symposium

Wibowo, H.A.C.^1 ; Ain, T.N.^1 ; Nugraha, Y.P.^2 ; Aji, D.P.P.^1 ; Khotimah, S.N.^1 ; Viridi, S.^1

Nuclear Physics and Biophysics Research Division, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

40132, Indonesia^1

School of Electrical Engineering and Informatics, Institut Teknologi Bandung, Jalan Ganesha 10, Bandung

40132, Indonesia^2

关键词: Acrylic plates;    Bed particles;    Brazil nut effect;    Convection flow;    Granular convection;    Granular particles;    Two-dimension;    Vibration frequency;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012053/pdf
DOI  :  10.1088/1742-6596/739/1/012053

来源: IOP

【 摘 要 】

Brazil-nut Effect (BNE) experiment in (real) two-dimension is conducted. Container, bed particles, and intruder are made from the same material, i.e. 2 mm thickness acrylic plate. Dimensionless acceleration r and vibration frequency f are in the range of 2-4 and 13-17 Hz, respectively. It is observed that rise time Trisedecreases with the increase of Γ similar to reported by others, but there is a range of f and Γ, where Triseincreases with the increase of Γ due to occurrence of Leidenfrost effect, which reduces convection flow of granular particles.