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In this research paper, the influence of variations in geometry of tape insert on thermal performance and flow characteristics of water inside tubes is investigated by means of computational fluid dynamics (CFD). The tape considered is alternate‐axis triangular cut twisted tape. The perimeter of the cuts on the tape, the pitch of the tape and the width of the tape were varied. Turbulent flow is considered...
A Tm3+/Yb3+ doped fiber laser (TYDFL) using two different types of cladding shapes fiber was demonstrated. The fiber consists of a fabricated D-shaped cladding and circular cladding fiber with a double clad structure. The difference in the ratio of ions concentration between doped ions for both fibers resulted in different lasing output performance. The ring cavity laser setup was used to observe...
This paper presents a new method on the intersection testing problem between an ellipsoid and an algebraic surface. In the new method, the testing problem is turned into a new testing problem whether a univariate polynomial has a positive or negative real root. Examples are shown to illustrate the robustness and efficiency of the new method.
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