Index Catalog // ScholarsArchive@OSU

Creator:: Kwak, Younghoon
Abstract:: Two-phase gas-liquid flows in microscale fractal-like branching channel flow networks were experimentally studied to assess the validity of existing void fraction correlations and flow regimes based on superficial gas and liquid velocities. Void fractions were assessed using two different methods. First, void fraction data were acquired using a High-Speed-High-Resolution (HSHR)...
Resource Type:: Dissertation
Full Text:: ………………………………………… 7 2.1.2 Two-phase boiling flow …………………………………... 8 2.1.3 Two-phase liquid-gas microchannel flow

Creator:: Edward, Lee M.
Abstract:: Based on experimental investigations the present study evaluates flow instability and void fraction in a fractal-like branching microchannel network with rectangular cross-section. The hydraulic diameter of the channels ranged from 308μm at the inlet to 143μm at the outlet. The flow network used is characterized by set branching ratios for...
Resource Type:: Masters Thesis
Full Text:: the throttled test case......................................................... 153 D.7

Creator:: Salakij, Saran
Abstract:: The pressure drop of convective boiling flow may be reduced by extracting vapor locally since the entire generated vapor does not have to travel through the entire channel length. In this study, the theoretical model was developed to simulate a convective boiling flow through a fractal-like branching microchannel network with...
Resource Type:: Masters Thesis
Full Text:: [7] 4 2.3 Schematic of the microscale heat sink comprised of a fractal network, porous membrane

Creator:: Mouchka, Gregory A.
Abstract:: An experimental study was performed in which an ammonia-water solution was desorbed within a branching fractal-like microchannel array. The solution entered in the center of a disk, and flowed out radially until discharging in to a gravity-driven separation chamber. Heat was added to the ammonia-water through a thin wall, above...
Resource Type:: Masters Thesis
Full Text:: 7 CONCLUSIONS AND RECOMMENDATIONS ................................... 101 LITERATURE CITED

Creator:: Shams Sobhani, Ehsan
Abstract:: Many engineering devices and propulsion systems suffer from undesirable effects of cavitation; such as degradation in the efficiency of pumps and turbines, generation of noise and vibration on ship propeller, increased drag and erosion of propeller blade, etc. In spite of decades of research on this problem, detailed study of...
Resource Type:: Dissertation
Full Text:: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 2 Discrete Bubble Model (DBM) for Cavitation 9 2.1 Fluid Phase Equations

Creator:: Apreotesi, Mario A.
Abstract:: It is hypothesized that increases in pressure drop due to vapor generation during boiling in microchannels can be reduced by extraction of vapor at its point of inception. Ultimately, this local vapor extraction decreases the pressure drop required to drive the flow through a fractal-like branching, microchannel flow network within...
Resource Type:: Masters Thesis
Full Text:: .................................... 76 6.3 Sensitivity Analysis .................................................. 81 7 Conclusions

Creator:: Abel, Kent C.
Abstract:: The next generation of nuclear safety analysis computer codes will require detailed modeling of two-phase fluid flow. The most complete and fundamental model used for these calculations is known as the two-fluid model. It is the most accurate of the two-phase models since it considers each phase independently and links...
Resource Type:: Dissertation
Full Text:: 2.3: Flow map for horizontal flow (Mandhane et al., 1974) .......................................... 7

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