A method of studying ball flow by ditigal computer

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dc.contributor.authorBennett, NWen_AU
dc.date.accessioned2025-03-26T00:46:36Zen_AU
dc.date.available2025-03-26T00:46:36Zen_AU
dc.date.issued1967-02-16en_AU
dc.date.statistics2025-01-23en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC: 621.4843/131(RSCA).en_AU
dc.description.abstractBall flow may be studied with the aid of a digital computer. The method consists of calculating elastic forces due to simple interactions and using these forces to track individual balls. Any shape of container may be simulated exactly, although protrusions into the container present difficulties, To date, only two-dimensional systems have been studied, but the method may be extended easily into three dimensions at a penalty of a tenfold increase in calculation timer This is caused by the extra dimension, the greater number of neighbours per ball and a more complete elastic analysis which must be applied in three dimensions Since elastic forces are being studied, the vibrations due to these forces must be followed, For hard balls this may involve real time intervals of milliseconds which may take seconds to calculate on the IBM 7040 computer on site. A circulation model may be easily set up by arranging for balls which have fallen out of the bottom of a container to be replaced at the top of the array of balls. The forces between balls and between a ball and the container wall are known at all times and may be given as output by the machine. The position and velocity of all balls is also known, and from the ball positions the voidage may be calculated. A model involving friction has been investigated in simple situations. The friction model allows balls in contact to move against each other for a limited distancer A force may be associated with the distance of slip and the force between the balls. The point of maximum slip corresponds to the point of limiting friction. An estimate is given of the cost to perform simple experimenteren_AU
dc.identifier.booktitleMovement of granular material, and structure, fluid flow and heat transfer in packed beds : Programme and abstracts of papers (from the) symposuim (held by the) Australian Atomic Energy Commission Research Establishment, at Lucas Heights, 16-17 February 1967en_AU
dc.identifier.citationBennett, N. W., (1967). A method of studying ball flow by digital computer. Paper presented to the Symposium on movement of granular material and structure, fluid flow and heat transfer in packed beds, February 16-17, 1967, programme and abstracts of papers. In Movement of granular material, and structure, fluid flow and heat transfer in packed beds : Programme and abstracts of papers (from the) symposium (held by the) Australian Atomic Energy Commission Research Establishment, at Lucas Heights, 16-17 February 1967. Lucas Heights, NSW : Australian Atomic Energy Commission.en_AU
dc.identifier.conferenceenddate1967-02-17en_AU
dc.identifier.conferencenameSymposium on movement of granular material and structure, fluid flow and heat transfer in packed bedsen_AU
dc.identifier.conferenceplaceLucas Heights, NSWen_AU
dc.identifier.conferencestartdate1967-02-16en_AU
dc.identifier.placeofpublicationLucas Heights, NSWen_AU
dc.identifier.urihttps://apo.ansto.gov.au/handle/10238/16097en_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectDigital computersen_AU
dc.subjectFlow rateen_AU
dc.subjectContainersen_AU
dc.subjectElasticityen_AU
dc.subjectGeneral Circulation Modelsen_AU
dc.subjectVelocityen_AU
dc.subjectFrictionen_AU
dc.titleA method of studying ball flow by ditigal computeren_AU
dc.typeConference Abstracten_AU
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