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Showing 1 to 20 of 455 for “"Reynolds Numbers"”.
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Shear flow visualization at high Reynolds Numbers
… scale model ships supplied data for Reynold's Numbers up to ~ 0(106). The work included in this thesis represents a continuation of those efforts up to Re O(107) using a model DDG51 (5514) Destroyer. Through endeavors to identify wake phenomena and closely examine possible sources, previously …
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Incompressible Flow Past Wedges at High Reynolds Numbers
Made available in DSpace on 2014-12-13T19:55:26Z (GMT). No. of bitstreams: 1 7726775.pdf: 3370976 bytes, checksum: 9309341f2aec6da3c58b32911182af2d (MD5) Previous issue date: 1977
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Post stall propeller behavior at low Reynolds numbers
… was observed in small propellers at low Reynolds numbers. First, performance data (thrust, power, and efficiency) of set variable pitch propellers was acquired in a wind tunnel. The propellers were 6 to 9.9 inches in diameter and were able to pitch to extreme angles. Second detailed …
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Measurements of Wings at Very Low Reynolds Numbers
Very low Reynolds number aerodynamics is a rapidly growing field of interest, especially in regard to the design and development of micro- and nano-air vehicles. In the work culminating in this thesis, force measurement apparatuses were designed and prototyped to measure wing performance at very …
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Aspect ratio effects on wings at low Reynolds numbers
… dimensionality on the flow around wings at low Reynolds numbers. It was seen that the effects observed at high Reynolds number are also present in this Re range. There is the usual increase in lift slope and this increase can even be predicted with reasonable accuracy using Prandtl's lifting …
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Mixing at Low Reynolds Numbers by Vibrating Cantilevered Ionic Polymers
Creating mixing at low Reynolds numbers is a non-trivial challenge that has been approached from many different perspectives, using passive or active methods. This challenge been further highlighted with the rise of microfluidics. Based on the diminutive size of these devices, the Reynolds numbers …
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Acoustic influences on flow over an airfoil at low Reynolds numbers
… environment was experimentally investigated at a Reynolds number of 200,000. The Wortmann FX-63-137-ESM airfoil section was used for the model with an aspect ratio of 4. Some acoustic disturbances could alter the transition process in the shear layer of the separation bubble on the upper surface …
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Analysis of Viscous Flow Past Wedges at Low and Moderate Reynolds Numbers
Made available in DSpace on 2014-12-12T00:25:53Z (GMT). No. of bitstreams: 1 7405560.pdf: 4104231 bytes, checksum: 8905bcd14c0f26b99776e5e866b7427d (MD5) Previous issue date: 1973
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Analytical Study of Flow Past a Circular Cylinder at Low Reynolds Numbers
Made available in DSpace on 2014-12-10T17:25:42Z (GMT). No. of bitstreams: 1 6808135.pdf: 2725760 bytes, checksum: 4b2406af8107f899a366942ccbe6de6a (MD5) Previous issue date: 1967
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Performance and slipstream characteristics of small-scale propellers at low Reynolds numbers
The low Reynolds number effects of small-scale propellers were investigated. At the Reynolds numbers of interest (below 100,000), a decrease in lift and an increase in drag is common making it difficult to predict propeller performance characteristics. A propeller testing apparatus was built to …
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Stochastic modeling of flows behind a square cylinder with uncertain Reynolds numbers
… Specifically, we examine the effects of the Reynolds number on stochastic fluid flows behind a square cylinder and evaluate computational schemes to do so. We review existing literature, examine our simulation results and validate the numerical solution. The thesis uses a novel open boundary …
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Characteristics of airfoils in an oscillating external flow at low Reynolds numbers
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1990.
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Heat transfer in mixing vessels at low Reynolds numbers. An experimental study of temperature profiles heat transfer rates and power requirements for mechanically agitated vessels operating at low Reynolds numbers.
The present study investigates experimentally the laminar mixing and heat transfer of a range of helical ribbon and anchor impellers for both Newtonian and inelastic non-Newtonian fluids. The work also correlates the experimental data empirically in the form of dimensionless groups. In order to …
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Structure-Property Relations in Bubble and Solid Particle Suspensions with Moderate Reynolds Numbers
In this study, several important properties of inertial bubble and solid particle suspensions have been characterized using numerical simulations. These properties include the hindered settling velocity and microstructure in solid particle suspensions, the scaling of the velocity variance and …
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Effect of Heat Transfer on Flow Field at Low Reynolds Numbers in Verticaltubes
Made available in DSpace on 2014-12-05T17:15:30Z (GMT). No. of bitstreams: 1 6000230.pdf: 8147700 bytes, checksum: 7c04c8e1ee39e0ce32c266eac3d9694f (MD5) Previous issue date: 1959
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Aerodynamic performance of low-to-moderate aspect ratio wings at low Reynolds numbers
… aspect ratio (2$\leq$\AR$\leq$5) tested at low Reynolds numbers (40,000 to 160,000). All models tested had a chord length of 3~in and a wingspan of 7 to 17.5~in. Experiments were conducted in the low-turbulence wind tunnel in the Subsonic Aerodynamics Research Laboratory at the University of …
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Spatio-temporal localization of canonical dynamic stall flow scales across varying Reynolds numbers
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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The flow of a high temperature, variable viscosity liquid, at low Reynolds numbers.
Thesis: Ph. D., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1966
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Aerodynamic and aeroacoustic design of small unmanned aircraft system propellers at low Reynolds numbers.
… and inefficiencies in power consumption at low Reynolds numbers. Experimental noise data compared stock, modified, and five bladed propellers reducing tip vortex strength and noise generation. Results showed measurable far field sound decay and five bladed noise reductions of 5 dBA. Three motors …
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