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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 75 for “"baffles"”.
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Slosh Damping with Floating Magnetoactive Micro-Baffles
… PMD is presented. Embedding floating micro-baffles with a magnetoactive material such that the baffle can be manipulated when exposed to a magnetic field preserves the benefits of both floating and static baffle designs. Activated micro-baffles form a rigid layer at the free surface and …
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Hydraulic evaluation of a denitrifying bioreactor with baffles
… areas, a wider and shorter bioreactor could use baffles to elongate the flow path, forcing more effective reactor volume utilization. To test this, a new bioreactor (LWD: 16.8 x 10.7 x .91 m; drainage treatment area: 14.2 ha) which included two flow-routing baffles was installed at the University …
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Applications of baffles and exhaust energy to motorcycle cylinder cooling
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1943.
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Effects of baffles on damping lateral fluid sloshing oscillations in tanker trucks
… research was aimed at studying the effects of baffles on reducing the lateral sloshing and thereby, improving the stability of heavy-duty trucks. Various configurations (horizontal, vertical, horizontal and vertical, and diagonal) of baffles were considered for this purpose. The objective of …
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Fish passage design for Southern Hemisphere small-bodied fish: Hydrodynamic and behavioural assessment using spoiler baffles
… during their upstream passage through spoiler baffles. The comparative behavioural assessment, together with the measured hydrodynamic information, is used to assess three different arrangements of spoiler baffles. The primary objective is to identify the baffle arrangement that can potentially …
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Simulation of palm oil and methanol mixing in stirred tank by implement a normal and fractal baffles
Numerical analysis of mixing and dissolution processes is becoming great significant for achieving a process of consideration and optimizing the production. Owing to the rising costs and deficiency of raw materials, “palm oil” processes are presently employed together with standard experimental …
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Experimental Investigation of Heat Exchange between Thermal Mass and Room Environments
… ceiling in an experimental chamber. Acoustic baffles obstruct the surface of the ceiling and impede heat transfer. However, there is nearly no published data about the effect of such baffles on heat transfer. Available results from simulations should be verified with an experimental …
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Tracer studies of inlet baffle performance in a horizontal rectangular settling tank model
Inlet baffles in a sedimentation basin should distribute the incoming flow uniformly over the inlet zone. This allows the flow to pass through the tank in a plug flow fashion, giving the solids a more quiescent condition to separate from the liquid. It was the object of the investigation to …
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Baffle material characterization for Advanced LIGO
… The Auxiliary Optics Support subsystem uses baffles and beam dumps to control this scatter, but the baffle material and shape contribute some scatter as well. Careful selection of baffle material for Advanced LIGO is necessary in order to minimize baffle backscatter. Characterization of …
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Transient Computational Fluid Dynamic Modeling of Baffled Tube Ram Accelerator
… (ranging from 1.8 to 5.1) through stationary baffles. The maximum baffle thickness and minimum baffle spacing at velocities near the minimum allowable entrance Mach number were both found to be ~53% of the projectile diameter. Further reducing the baffle spacing resulted in the projectile …
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Analysis of Bat Biosonar Beampatterns: Biodiversity and Dynamics
… Both the pinnae and noseleaf act as acoustic baffles which interact with the outgoing and incoming sound; thus, they form an important interface between the bat and its environment. Beampatterns describe this interface as joint time-frequency transfer functions which vary across spatial …
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Local shell-side coefficients in shell and tube exchanges the use of a mass transfer technique
… shell-side Reynolds number range 100 to 42 000. Baffles with zero clearances were studied at three baffle cuts and two baffle spacings. Baffle geometry is shown to have a large effect on the distribution of tube coefficients within the baffle compartment. Fluid "jetting" is identified with some …
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Use of silicon surface-barrier detectors for neutron detection
… with essentially an infinite number of baffles was used, since it consisted of a hole drilled through the collimator material. If the number of baffles were decreased, the possibility of protons being scattered from the collimator walls and benign detected, but at a lower energy, would …
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Advances in Baffled and Railed Tube Ram Accelerator Operation and Modeling
… configurations: the RTRA with sweeper baffles and the baffled start stage (BSS). The BTRA testing discovered that smaller diameter baffle chambers are capable of producing higher thrust with higher efficiency, while larger diameter baffle chambers allow for operation at lower Mach …
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Biomimetic sonar design and the investigation of the role of peripheral dynamics for target classification in bat biosonar
… the changing conformations of the biomimetic baffles were responsible for time-variant signatures in echoes. These signatures could be seen in echoes from a variety of both simple and complex target shapes. Then to further the capabilities of the device, an improved actuation system was …
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Heat transfer between a supernatant gas and a flowing vibrofluidized bed of solids
… affect on the heat transfer. Tests with multiple baffles led to a maximum heat transfer coefficient (143 W/m²-K) when using four baffles. For all tests performed in this work, the solids were not truly vibrofluldized. Instead, they were merely vibro-conveyed (or vibro-shuffled) as a single mass. A …
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Biomimetic Detection of Dynamic Signatures in Foliage Echoes
… species that dynamically deform their reception baffles (pinnae) and emission baffles (noseleaves) during signal reception and emissions, respectively. These dynamics are a focus of prior studies that demonstrated that these effects could introduce time-variance within emitted and received …
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Computational and experimental determination of the hydrodynamics in a stirred unbaffled vessel provided with angle-mounted axial impellers
… tanks and reactors are typically provided with baffles to improve their mixing characteristics. However, in a number of pharmaceutical production facilities unbaffled vessels are commonly used. The absence of baffles is preferred in such cases because it reduces the potential for contamination …
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Further studies on flow distribution on distillation sieve trays
… work on the possibility of using deflection baffles in conventional distillation trays as flow straightening devices, with the view of enhancing tray efficiency. The mode of operation is based on deflecting part of the liquid momentum from the centre of the tray to the segment regions in …
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