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Interaction among droplets in a uniform flow at intermediate Reynolds numbers
Lunds Universitet, LTH, Avd. för Strömningsmekanik.ORCID-id: 0000-0001-9976-8316
Lunds Universitet, LTH, Div. Fluid mechanics.
Lunds Universitet, LTH, Div. Fluid mechanics.
2006 (Engelska)Ingår i: 44th AIAA Aerospace and Science Meeting, Reno, Nevada, USA, Jan 9-12, 2006, American Institute of Aeronautics and Astronautics , 2006Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

Simulations of single and dual droplets in a uniform flow for Reynolds numbers 100and Weber numbers of 0.1 and 1.0 are performed on a Cartesian grid using the Volume ofFluid method. The simulations are carried out to provide a detailed study of the interactionbetween droplets. Thus, the main focus is to investigate the forces a droplet is subjectedto as its position is changed in relation to a reference droplet. The results are comparedto simulations for solid particles using the Volume of Solid, a method based on the Volumeof Fluid approach. The results show the importance of accounting to the full interactionamong the droplets. Such interaction has to be included even for rather diluted two-phasesystems. The large number of calculations results in a data-base that can be used as alook-up table for accounting for the inter-droplet interaction (i.e. effects on lift- and dragcoefficients)in the frame-work of Lagrangian particle tracking approach. Additionally, wedo take into account also droplet deformation, which has significant effect for droplet inmany engineering applications.

Ort, förlag, år, upplaga, sidor
American Institute of Aeronautics and Astronautics , 2006.
Nationell ämneskategori
Strömningsmekanik och akustik
Identifikatorer
URN: urn:nbn:se:kth:diva-47802OAI: oai:DiVA.org:kth-47802DiVA, id: diva2:456264
Anmärkning
QC 20111117Tillgänglig från: 2011-11-17 Skapad: 2011-11-14 Senast uppdaterad: 2011-11-17Bibliografiskt granskad

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Prahl Wittberg, Lisa

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