Laminar flow heat transfer in the combined entrance region of concentric circular annulus.

Yücel, Oktay


Laminar filmwise condensation of flowing vapor on a sphere
Erol, Doğuş; Yamalı, Cemil; Department of Mechanical Engineering (2004)
The objective of this study is to analyze theoretically the laminar film condensation of water vapor flowing on a sphere. For this purpose, the problem was handled by including all of the two-phase boundary layer parameters such as gravity, effect of vapor shear, inertia, energy convection and pressure gradient. For this full two-phase boundary layer system, the boundary layer equations, boundary conditions and the interfacial conditions were first analyzed, and then discretized. A computer program in Mathc...
Laminar natural convective heat transfer over two vertically spaced horizontal cylinders.
Bezzazoğlu, Mehmet; Department of Mechanical Engineering (1985)
Yüncü, Hafit; YAMAC, S (Elsevier BV, 1991-07-01)
In this study parallelogramic cavity is modelled as an air-filled enclosure bounded by two isothermal and two insulated walls. The insulated walls are inclined at an angle delta to the vertical plane. The basic governing equations i.e., conservation of mass, momentum and energy are solved by the numerical solution technique developed by Gosman et al. [1, 2]. Average heat transfer coefficient based on the temperature difference of vertical walls indicates that the direction of heat flow plays an important...
Laminar natural convective heat transfer in a cavity
Gövsa, Cemal; Paykoç, Ediz; Department of Mechanical Engineering (1988)
Planar perovskite solar cells with metal oxide transport layers by co-evaporation and hybrid vapor-solution sequential method
Soltanpoor, Wiri; Yerci, Selçuk; Department of Micro and Nanotechnology (2020)
The recent success in achieving beyond 25% efficiency with perovskite solar cells (PSC) has called for further upgrading the fabrication techniques to meet the scalability requirements of the photovoltaic (PV) industry. Co-evaporation and a hybrid vapor-solution technique have been shown to produce uniform and efficient planar PSCs. Therefore, in this study, co-evaporation method was optimized studying the partial pressure of the organic precursor. Later electron transport layers in n-i-p and p-i-n structur...
Citation Formats
O. Yücel, “Laminar flow heat transfer in the combined entrance region of concentric circular annulus.,” Middle East Technical University, 1972.