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Please use this identifier to cite or link to this item: http://arks.princeton.edu/ark:/88435/dsp01cz30pv992
 Title: Trapping Mechanisms in Flows in T-Shaped, Y-Shaped, and Arrow-Shaped Junctions for Different Reynolds Numbers 0 (100 - 1000) Authors: Wang, Dawn Advisors: Stone, Howard Department: Mechanical and Aerospace Engineering Class Year: 2015 Abstract: Arrow-, T-, and Y-shaped junction ﬂows are found in many physiological ﬂow net-works and piping systems, such as in cardiovascular systems. These shapes also serve as key mechanisms for mixing, heat exchange, or droplet formation devices. While ﬂows of such geometries have been studied in great deal qualitatively, little quantitative work has been done, especially concerning the occurrence of particle trapping for junction ﬂows with suspended particles that have densities lower than that of the ﬂuid itself. In this thesis, a quantitative study was performed experimentally and numerically, ﬁnding a range of Reynolds numbers and junction angles at which this phenomenon can occur. Numerical simulations showed that, in arrow-, T-, and Y-shaped junction ﬂows, ﬂuid mechanical features similar to the bubble form of vortex breakdown can be the mechanism behind particle trapping. While unwanted particle trapping in ﬂow networks can cause health hazards or failures in piping networks, this phenomenon can also be applied to separation devices; therefore, a better understanding of this phenomenon has signiﬁcant potential for complex piping system designs as well as research advancements in medical and industrial ﬁelds. Extent: 49 pages URI: http://arks.princeton.edu/ark:/88435/dsp01cz30pv992 Type of Material: Princeton University Senior Theses Language: en_US Appears in Collections: Mechanical and Aerospace Engineering, 1924-2016

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