Results 1 to 7 of 7

Thread: Profile of Bulk Material Flowing from a Rotating Chute

  1. #1
    Is there any mathematical formulation available for determination of profile at any cross-section of flowing materials along a rotating chute?

  2. #2
    MATERIALHANDLING Guest
    Dear Mr Nag
    could you pl. elaborate more on your query regarding rotating chute: is the chute rotating and what is the profile of the material discharged, is it vertical or inclined.
    regards
    satwinder

  3. #3
    Dear Mr Satwinder
    Yes you are right...the chute is rotating with a known RPM about a fixed vertical axis.The inclination angle of the chute can be varied from 17 deg to 53 deg.Chute is of length 3 m and it`s shape is semi cylindrical.Idea is to predict the falling trajectory of the material from the chute and the spread of the material for a known initial velocity of the material when it reach the chute.At the same time the profile of the material in the chute.

  4. #4
    Lawrence K. Nordell

    Lawrence K. Nordell

    President and CEO

    Conveyor Dynamics Inc.

    Conveyor Dynamics Inc.

    Professional Experience 59 Years / 7 Month Lawrence K. Nordell has 59 Years and 7 Month professional experience

    Discussions 2622 Lawrence K. Nordell acceded to 2622 discussions, Articles 0 Lawrence K. Nordell wrote 0 articles, Publications 0 Lawrence K. Nordell Nordell released 0 publications

    Searching nothing specified

    Know-How Design (1524) Lawrence K. Nordell used this tag 1524 times, Pipe Conveyor (239) Lawrence K. Nordell used this tag 239 times, Chutes (119) Lawrence K. Nordell used this tag 119 times

    Flow in Rotating Chute

    Can the x-section be calculated? Yes, using DIscrete Element Method (DEM) modeling. Granular dynamics, using DEM, can solve many such puzzling particle flow regimes. Some limitations are: a)model size in 2-D or 3-D with number of particles www.conveyor-dynamics.com (comminition side)

    Lawrence Nordell
    Conveyor Dynamics, Inc.
    1111 West Holly St.
    Bellingham, WA 98225 USA
    ph 360/671-2200
    fx 360/671-8450
    email nordell@conveyor-dynamics.com

  5. During the late 50th and 60th. Prof. Jung, head of R&D from the former Steinmueller boiler manufacturing made a lot of investigations on rotating chutes. They use rotating chutes as feeding and dosing elements for bulk solids.
    I´m shure to have some copies of his calculations (closed mathematical description with set of diff-eq.)in my stock.
    If so, I´ll post some figures here.

    Best regards
    Klaus Schneider

    Last edited by Schneider; 9th November 2002 at 16:20.

  6. For more informations please read:

    1. Jung, R.: Die Hohlwelle als Schüttgutförderer. Forsch. Ing.-Wesen 25 (1959) 2 , S. 37-43

    2. Jung, R.: Eigenschaften und Anwendungsmöglichkeiten des Schüttgut-Drehrohrzuteilers. Brennstoff-Wärme-Kraft 14 (1962) 12, S 593-600

    3. Jung, R.: Der Drehrohrförderer. Maschinenmarkt 72 (1966) 101

    The attached picture is part of 3.
    Attached Thumbnails Attached Thumbnails Click image for larger version. 

Name:	drehrohrförderer.jpg 
Views:	560 
Size:	31.9 KB 
ID:	56  

  7. Dear Mr. Nag

    The determination of the motion of material in a rotating chute and the dischage trajectory is well suited to physical modelling. Movement in rotating vessels of many kinds is strongly dependent on the Froude Number of the system. This applies across a wide range of rotational speeds. Similarly, discharge trajectory can be scaled.

    Requirements are chute geometry and rotational speed. Results are best for free flowing granular materials above 150 microns average diameter, but other materials can be simulated.

    Please contact me if you would like to pursue this.

    Regards,

    Peter Donecker


    http://www.oreflow.com

Similar Threads

  1. Free-Flowing Concrete With OLI®
    By Author in forum Case Studies
    Replies: 0
    Last Post: 29th September 2015, 9:13
  2. Replies: 0
    Last Post: 16th December 2014, 16:48
  3. Impact Force of Material on Chute
    By raghu in forum Mechanical Conveying
    Replies: 3
    Last Post: 11th April 2013, 17:06
  4. Bulk Loading Chute Needed
    By longking in forum New Projects, Tenders, Inquiries
    Replies: 4
    Last Post: 11th April 2008, 14:42
  5. Flowing of Ceramic Powders
    By Dr. Alan Nappa - Alberti in forum Flow Properties
    Replies: 6
    Last Post: 16th June 2004, 17:25

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO