The long ranger is riding through a sandstorm. Does his mask (a bandanna that covers his nose) significantly decrease the amount of sand he breathes in? assume the bandanna is made of fibers, each 300 u in diameter. They are woven in a simple weave that blocks 75 % of the projected area; the remaining 25 % is open, with holes up to 75 μ in diameter. For the purpose of this problem, the bandanna may be considered equal to a single row of parallel fibers, each 300 u in diameter, with 75 % of the flow area blocked and 25 % open. The gas velocity approaching the cloth as he breaths is 1 m/s. a). Estimate both the collection efficiency for 10 u particles and the cut diameter for bandanna used as a filter
The long ranger is riding through a sandstorm. Does his mask (a bandanna that covers his nose) significantly decrease the amount of sand he breathes in? assume the bandanna is made of fibers, each 300 u in diameter. They are woven in a simple weave that blocks 75 % of the projected area; the remaining 25 % is open, with holes up to 75 μ in diameter. For the purpose of this problem, the bandanna may be considered equal to a single row of parallel fibers, each 300 u in diameter, with 75 % of the flow area blocked and 25 % open. The gas velocity approaching the cloth as he breaths is 1 m/s. a). Estimate both the collection efficiency for 10 u particles and the cut diameter for bandanna used as a filter
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:The long ranger is riding through a sandstorm. Does his mask (a bandanna that covers his nose)
significantly decrease the amount of sand he breathes in? assume the bandanna is made of fibers,
each 300 μ in diameter. They are woven in a simple weave that blocks 75 % of the projected area; the
remaining 25 % is open, with holes up to 75 μ in diameter. For the purpose of this problem, the
bandanna may be considered equal to a single row of parallel fibers, each 300 u in diameter, with 75
% of the flow area blocked and 25 % open. The gas velocity approaching the cloth as he breaths is 1
m/s.
a). Estimate both the collection efficiency for 10 u particles and the cut diameter for bandanna used as
a filter
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