?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.relation=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F252%2F&rft.title=Boundary+Layers+and+Material+Deformation+in+Fiber+Drawing&rft.creator=Ambrose%2C+David&rft.creator=Braun%2C+Richard&rft.creator=DeBisschop%2C+Cynthia&rft.creator=Gremaud%2C+Pierre&rft.creator=Howell%2C+Peter&rft.creator=Kramer%2C+Peter&rft.creator=Please%2C+Colin&rft.creator=Salazar+Gonzalez%2C+Jose+Domingo&rft.creator=Schwendeman%2C+Donald&rft.subject=Materials&rft.description=We+study+two+fluid+dynamical+issues+which+are+important+in+the+manufacture+of+thin+glass+fibers+for+communication+networks+and+materials.+Such+thin+fibers+are+obtained+by+rapidly+pulling+molten+glass+through+an+array+of+successively+smaller+holes.%0D%0A%0D%0AThrough+asymptotic+analysis+and+physical+modeling%2C+we+obtain+a+quantitative+description+of+the+flow+and+structure+of+the+glass+fiber+as+it+is+being+pulled.+We+examine+in+particular+the+issue+of+whether+initially+planar+cross+sections+remain+planar%2C+and+find+that+they+do+so+approximately%2C+but+not+exactly%2C+even+in+the+absence+of+such+factors+as+gravity%2C+surface+tension%2C+and+inertia.+We+also+develop+a+quantitative+theory+for+the+structure+of+the+air+flow+near+the+fiber%2C+which+is+an+important+ingredient+in+determining+how+fast+the+fiber+cools.+In+particular%2C+we+develop+a+description+for+the+structure+of+the+boundary+layer+near+a+fiber+which+has+accelerating+surface+velocity+and+shrinking+radius+which+is+comparable+or+thin+compared+with+the+thickness+of+the+boundary+layer.+One+novel+feature+is+that+the+acceleration+of+the+fiber+surface+velocity+leads+to+a+compression+of+the+boundary+layer+as+it+evolves+downstream.&rft.date=2002&rft.type=Study+Group+Report&rft.type=NonPeerReviewed&rft.format=application%2Fpdf&rft.language=en&rft.identifier=http%3A%2F%2Fmiis.maths.ox.ac.uk%2Fmiis%2F252%2F1%2Fcorning01.pdf&rft.identifier=++Ambrose%2C+David+and+Braun%2C+Richard+and+DeBisschop%2C+Cynthia+and+Gremaud%2C+Pierre+and+Howell%2C+Peter+and+Kramer%2C+Peter+and+Please%2C+Colin+and+Salazar+Gonzalez%2C+Jose+Domingo+and+Schwendeman%2C+Donald++(2002)+Boundary+Layers+and+Material+Deformation+in+Fiber+Drawing.++%5BStudy+Group+Report%5D+++++