Numerical and experimental investigation of radial and tree-shaped vascular channels for self-cooling structures için kapak resmi
Numerical and experimental investigation of radial and tree-shaped vascular channels for self-cooling structures
Yenigün, Onur, author.
Yazar Ek Girişi:
Fiziksel Tanımlama:
xi, 51 leaves: color illustraltions.+ 1 computer laser optical disc.
In this study, we show experimentally and numerically how a plate which is subjected to a constant heat load can be kept under an allowable temperature limit. Vascular channels in which coolant fluid flows have been embedded in the plate. Three types of vascular channel designs were compared: radial, tree-shaped and their hybrid. The effects of channel design on the thermal performance for different volume fractions (the fluid volume over the solid volume) are documented. In addition, the effects of the number of channels on cooling performance have been documented. Changing the design from radial to tree-shaped designs decreases the order of pressure drop. Hence increase in the order of the convective heat transfer coefficient is achieved. However, tree-shaped designs do not bathe the entire domain. Therefore, additional channels were inserted at the uncooled regions (hybrid design). The best features of both radial and tree-shaped designs are combined in the hybrid of them: the flow resistances to the fluid and heat flow become almost as low as the tree-shaped and radials designs, respectively. Furthermore, this thesis shows how delaying the inlet of the coolant fluid for a given time interval affects the peak temperature. The effect of design on the maximum temperature shows that there should be an optimum design for a distinct set of boundary conditions, and this design should be varied as the boundary conditions change. This result is in accord with the constructal law, i.e. the shape should be varied in order to minimize resistances to the flows. Keywords and Phrases: Smart materials, Vascularization, Self-cooling, Numerical Simulation, Experimental Study
Konu Başlığı:
Yazar Ek Girişi:
Tek Biçim Eser Adı:
Thesis (Master)--İzmir Institute of Technology: Mechanical Engineering.

İzmir Institute of Technology:Mechanical Engineering--Thesis (Master).
Elektronik Erişim:
Access to Electronic Versiyon.


Materyal Türü
Demirbaş Numarası
Yer Numarası
Durumu/İade Tarihi
Tez T001473 TA418.9.S62 Y458 2016

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