Publication:
Movable and Adjustable Injection of Air through Concentrated Sources of Mass and Momentum for the Pneumatic Atomization of Polyurethane and the Modeling of Droplet–Fiber–Interaction for the Manufacturing Process of Polyurethane–Fiber–Reinforced Composites

cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentStrömungsmechanik
cris.virtual.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtual.departmentbrowseStrömungsmechanik
cris.virtual.departmentbrowseStrömungsmechanik
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
cris.virtualsource.departmentba61e71a-d073-4609-89b6-c10b460b09a8
cris.virtualsource.department#PLACEHOLDER_PARENT_METADATA_VALUE#
dc.contributor.authorDiffo, Patrick
dc.contributor.authorWulf, Peter
dc.contributor.authorBreuer, Michael
dc.date.issued2012
dc.description.abstractFor the manufacturing process of polyurethane-fiber-reinforced composites the liquid plastic polyurethane (PUR) is sprayed on a substrate. Simultaneously fibers are injected in the spray cone for wetting before the entire composite deposits and starts curing. The quantification of the influence of some process parameters like the air mass flow, the droplet size and distribution or the fiber injection angle on the fiber orientation and distribution on the substrate are to be analyzed. The modeling of the spray is carried out using a RANS Euler-Lagrange approach coupling the droplets with the gas phase in a four-way coupled manner. Thereby a new approach is presented for the moving air injection, where mass and momentum source terms are applied to a new set of adjacent cells according to the predefined motion of the injector. The fiber-droplet-coupling is realized either by artificially mixing the droplets and the air to a fictive fluid through a process called “homogenization” or by considering the dense droplet flow as an Eulerian phase through a process called “semi-homogenization”. The influences of both approaches are to be compared regarding the fiber distribution and orientation on a substrate.
dc.description.versionNA
dc.identifier.citationDiffo, P., Wulf, P., Breuer, M.: Movable and Adjustable Injection of Air through Concentrated Sources of Mass and Momentum for the Pneumatic Atomization of Polyurethane and the Modeling of Droplet–Fiber–Interaction for the Manufacturing Process of Polyurethane–Fiber–Reinforced Composites, ICLASS 2012, 12th Triennial Int. Conf. on Liquid Atomization and Spray Systems, Heidelberg, Germany, Sept. 2–6, (2012).
dc.identifier.isbn978-88-903712-1-9
dc.identifier.urihttps://openhsu.ub.hsu-hh.de/handle/10.24405/15085
dc.identifier.urlhttps://www.ilasseurope.org/ICLASS/iclass2012_Heidelberg/Contributions/Paper-pdfs/Contribution1349_b.pdf
dc.language.isoen
dc.relation.conference12th Triennial International Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, Sept. 2–6, (2012).
dc.relation.orgunitStrömungsmechanik
dc.rights.accessRightsmetadata only access
dc.titleMovable and Adjustable Injection of Air through Concentrated Sources of Mass and Momentum for the Pneumatic Atomization of Polyurethane and the Modeling of Droplet–Fiber–Interaction for the Manufacturing Process of Polyurethane–Fiber–Reinforced Composites
dc.typeConference paper
dcterms.bibliographicCitation.booktitleICLASS 2012, 12th International Annual Conference on Liquid Atomization and Spray Systems, Heidelberg, Germany, September 2-6,2012
dspace.entity.typePublication
hsu.peerReviewed
hsu.uniBibliography
oaire.citation.endPage8
oaire.citation.startPage1
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