Dragging objects through powder
Dragging objects through powder
(OP)
I am trying to find references to drag force for moving solid objects through a powder. The powder is a polishing medium, free flowing, density about 24 lb per cubic foot.
Can you help?
Can you help?





RE: Dragging objects through powder
RE: Dragging objects through powder
RE: Dragging objects through powder
RE: Dragging objects through powder
RE: Dragging objects through powder
It's been years since I looked at it in the U of Wash. Engrg. Library, but did find a journal that is dedicated to powdered fluid dynamics; mostly concerned with powder/granular conveying...somewhere in that combination of terms (powder granular fluid conveying dynamics) is the journal title...I think. Hopefully, there are discussions in there of drag forces on fixed elements (valves, pipe elbows, struts) in a conveying stream, which should give you a means for estimating drag forces.
A quick google search yields the following:
Powder Technology
Journal of Fluid Mechanics
Physics of Fluids
as a partial list of journals touching on the topic.
Going a bit further, one can find the following scholarly article:
http://www.nd.edu/~granular/slowdrag.pdf
You may need to try and find the last reference in that paper.
RE: Dragging objects through powder
You might try posting your question on one of these forums:
http://www.bulk-online.com/Forum/index.php
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RE: Dragging objects through powder