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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 41 for “"Parallel Flow"”.
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Hydroeleastic Vibration of Rods in Parallel Flow
Made available in DSpace on 2014-12-09T19:52:28Z (GMT). No. of bitstreams: 1 7013372.pdf: 3193603 bytes, checksum: 650fe4c8cc4600cb91df0549f37b2b7e (MD5) Previous issue date: 1969
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Hydromagnetic stability of parallel flow of an ideal heterogeneous fluid.
Thesis (Ph D.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1970.
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Effect of vibration on heat transfer from wires in parallel flow
… and characteristics of three vibrated wires In a parallel flow. A simple experimental apparatus was constructed with which to pursue the investigation, and various results were obtained. Three wires of different diameters were individually tested in two configurations. One configuration consisted …
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Two phase flow distribution in parallel flow heat exchangers -- experimentally verified model
Maldistribution of refrigerant is a problem in parallel microchannel heat exchangers that lowers their potential effectiveness, especially when controlled by superheat. This paper describes modeling and numerical simulation of two phase mass flow distribution in a microchannel evaporator, on the …
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3D trench-parallel flow in the subduction region and correlation with seismic anisotropy direction
… world. In subduction zone backarcs both trench-parallel and trench-normal seismic anisotropy, or fast wave polarization direction of shear wave, are observed. In the mantle the general assumption is that seismic anisotropy is caused by Lattice Preferred Orientation (LPO) of olivine minerals and …
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A numerical study of barotropic instability of a zonally varying easterly jet.
… in several respects to that expected from the parallel flow theory of barotropic instability, however, the resultant structure of the waves causes a spatial growth rate greater than predicted by the local growth rates computed with a parallel flow model. In the stable region, the structure …
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Dehydration of apple rings
… both experimental and computational, for the parallel-flow industrial dehydrator drying process.
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Analytical methods for evaluating two-dimensional effects in flat-plate solar collectors
… analysis. The first method is practical only for parallel-flow collectors. The second method used two sectionally uniform loss coefficients -- U<sub>LI</sub> for internal collector sections and U<sub>LE</sub> for edge sections -- to evaluate collector performance. The second method is applicable …
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Heat and mass transfer in bubble column dehumidifiers for HDH desalination
… design for HDH, including a device-specific parallel-flow effectiveness, are explained. A new model for the performance of single bubble trays is developed based on the rapid mixing in the column and the approximation of negligible gas-side resistance. An experiment is performed to measure …
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Assessment of the Wear Effects of Alumina-Nanofluids on Heat-Exchanger Materials
… and developed: a multiple nozzle test rig and a parallel flow test rig. A main purpose of this research work was to assess the use of these new test rigs to evaluate nanofluid wear, and the ad-hoc newly proposed testing methodologies are discussed. Experimental results are presented on typical …
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Carbon dioxide transfer through hollow fiber membranes
… membrane modules were operated in a sealed-end, parallel flow configuration. Several modules were constructed that ranged in interfacial surface area from 466 to 1397 m2/m3. The mass transfer coefficients were calculated based on a model of the system that included a prediction of the internal …
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The analytical design of a turbo-jet combustion chamber.
… arrive at a logical design point. The fact that parallel flow would exist within the chamber was noted, and the burner was designed to obtain the required flow within an equal pressure drop across all the parallel paths. The holes for introducing the hair into the burner basket were placed in …
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The variability of the marine atmospheric boundary layer in the Greenland Sea marginal ice zone a case study.
… ice zone (MIZ) is examined for various wind flow regimes with respect to the ice edge. Rawinsonde profiles and surface observations collected from three ships during MIZEX-87 (20 March - 11 April 1987) served as the data set for the examination. Three specific flow regimes are discussed: …
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Effective modeling of throughput time in semiconductor assembly processes
… dependent. In addition, we devise heuristics to parallelize the simulation process and significantly reduce computational expense in DES models, thereby affording the inclusion of detailed factors. We perform various sensitivity studies on the assembly's constraining process which indicate that …
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Computational analysis of viscoelastic fluid dynamics with applications to heat exchangers
… are investigated; both in the counter flow and parallel flow configurations. Graphical computational results are presented and discussed quantitatively and qualitatively with respect to several parameters involved in the problem.
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Plasma flows in the Alcator C-Mod scrape-off layer
Near-sonic parallel plasma flows are persistently observed in the scrape-off layer (SOL) of tokamaks, at locations far from material surfaces. Ballooning-like transport asymmetries are thought to be a principal driver for the strong parallel flows, a hypothesis supported by the observation of steep …
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Turbocharger Turbines: An Experimental Study on the Effects of Wastegate Size and Flow Passage Design
… two (21 mm). The effects of turbine housing flow passage design and bypass throat size on open wastegate turbine performance and wastegate flow efficiency were examined at discrete wastegate valve openings: 5¿¿, 10¿¿, 20¿¿, and 40¿¿. The study also analyzes the effects of these geometrical …
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Pneumatic Particulate Collection System for an Unmanned Ground Sampling Robot
… entrainment (i.e. steep attack angle and parallel flow). Turbulent, free jet characteristics and critical velocities of particles are studied. Ultimately, a final design is presented that effectively collects particulate material from the top 5/8" layer of both thick and thin particle beds.
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Evaluating a multi-jet Impingement air heat exchanger design for PEBB 6000 using Solidworks Flow Simulation
… an air heat exchanger design that combines a parallel plate-fin heat sink with air jet impingement onto its fins. Previous studies showed that jet impingement methods can yield heat transfer rates that are three times of those produced by conventional cooling methods, which confines a parallel …
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