Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 26 for “"Base Pressure"”.
-
Base Pressure Problems Associated With Supersonic Axisymmetric External Flow Configurations
Made available in DSpace on 2014-12-13T19:55:23Z (GMT). No. of bitstreams: 1 7524433.pdf: 3022190 bytes, checksum: 87de53c9eb27a879ba0a26697cc54f5d (MD5) Previous issue date: 1975
-
Analytical and Experimental Study of the Axially-Symmetric Supersonic Base Pressure Problem
Made available in DSpace on 2014-12-05T19:15:56Z (GMT). No. of bitstreams: 1 5904589.pdf: 4526857 bytes, checksum: ea67dc586d3f5a675540d838bb26c5c8 (MD5) Previous issue date: 1959
-
Base Pressure Problems Associated With an Axisymmetric Transonic Flow Past a Backward Facing Step
Made available in DSpace on 2014-12-13T19:55:27Z (GMT). No. of bitstreams: 1 7804072.pdf: 3116092 bytes, checksum: c4888928ad717df358d1660e293794c7 (MD5) Previous issue date: 1977
-
An experimental determination of the trailing-edge base pressure on blades in transonic turbine cascades
… documents an experimental investigation of the base (trailing edge) pressure and its approximate distribution on a transonic turbine blade. Since the base pressure plays an important role in determining the profile loss on blades with thick trailing edges, both the base pressure and the blade …
-
The Influence of Finite Bleed Velocities on The Effectiveness of Base Bleed in The Two-Dimensional Supersonic Base Pressure Problem
Made available in DSpace on 2014-12-05T19:15:54Z (GMT). No. of bitstreams: 1 0020898.pdf: 2450533 bytes, checksum: 9229436e35d4ba0a65ae00cc108838fa (MD5) Previous issue date: 1957
-
A Study of the Base Pressure Problem for Supersonic Two-Dimensional Flow in Which the Approaching Stream Has Transient Properties
Made available in DSpace on 2014-12-05T19:15:58Z (GMT). No. of bitstreams: 1 6104317.pdf: 1769323 bytes, checksum: 1ca32c6324f3b5d590e44e013047b6d5 (MD5) Previous issue date: 1961
-
The Non-Isoenergetic Turbulent Jet Mixing of a Two-Dimensional Supersonicjet With Consideration of Its Influence on The Base Pressure Problem
Made available in DSpace on 2014-12-05T19:15:51Z (GMT). No. of bitstreams: 1 0013542.pdf: 2446937 bytes, checksum: 1ad23c458f116f75349fc30ffd504036 (MD5) Previous issue date: 1955
-
The Base Pressure Behind a Blunt Trailing Edge for Supersonic Two-Dimensional Flow. Approaching Streams Having the Same Stagnation Temperature but Dissimilar Mach Numbers and Stagnation Pressures
Made available in DSpace on 2014-12-05T19:15:52Z (GMT). No. of bitstreams: 1 0018208.pdf: 4634108 bytes, checksum: 981b76e62afe7e33c4cfab589608cf4a (MD5) Previous issue date: 1956
-
Ram-jet combustion based on shock/flame interaction
… of shock/wake and shock/flame interaction on the base pressure of axisymmetric bodies at Mach 2 has been carried out. This investigation has determined the effects of various forms of shock generator (axisymmetric cowls, twodimensional wedges and 'delta' wings) on the base pressure. Shock waves …
-
Active control of massively separated high-speed/base flows with electric arc plasma actuators
… multiple electric-arc plasma discharges near the base corner separation point. The control authority of electric arc plasma actuators on a supersonic axisymmetric base flow was evaluated for several actuator geometries, frequencies, forcing modes, duty cycles/on-times, and currents. Initially, an …
-
Control of supersonic axisymmetric base flows using passive splitter plates and pulsed plasma actuators
… control on the near-wake downstream of a blunt-based axisymmetric body in supersonic flow has been conducted. To better understand and control the physical phenomena that govern these massively separated high-speed flows, this research examined both passive and active flow-control methodologies …
-
Effect of Adaptive Tabs on Drag of a Square-Base Bluff Body
… wind tunnel testing of a 0.127m by 0.127m square-base bluff body to test the effectiveness of trailing edge tabulations to reduce drag in the Cal Poly 0.912m by 1.219 m low-speed wind tunnel. To accomplish this, the boundary layer was first measured on the trailing edge of the model for the three …
-
Wake closure conditions in plug nozzle flowfields
… of the flow determines the dependence of the base pressure on the ambient environment, and therefore affects overall thrust. An experimental, numerical, and analytical investigation characterized the transition of the wake between closed and numerical, and analytical investigation …
-
Projectile thrust-drag optimization with external burning
External burning increases base pressure. The characteristic and linearized equations with heat addition are discuss ed, and the condition for maintaining irrotationa ity with heat addition is derived. A transition model, which extends the Crocco-Lees base flow model, and a spin model are …
-
Modification of an ultra-high-vacuum scanning tunneling microscope for silicon nanostructure fabrication
… hours to 3 hours. The capillary doser lowers the base pressure during the silicon growth experiment by two orders of magnitude. The system operation after the system modification was tested. The system is now ready for subsequent silicon nanostructure growth using disilane gas.
-
The drag and lift characteristics of a cylinder placed near a plane surface
Surface pressure, drag and lift coefficients have been experimentally determined for a right circular cylinder located near a plane surface and placed in a cross flow of air. Parametric studies were carried out for Reynolds numbers varying from 90,000 to 250,000, three plate lengths and a variety …
-
Measurements and Visualizations of a Three-Dimensional Compressible Base Flow
… varying strength at the angular discontinuity, a base-edge expansion fan, a separated shear layer, an asymmetric recirculation region, and a turbulent wake. A strong secondary circumferential flow, which develops along the afterbody due to pressure gradients on its surface, results in the …
-
A study of micromachined displacement pumps for vacuum generation
… and analyzers are normally operated at the pressure range lower than a few millitorr. We are developing a micromachined vacuum pump that is comprised of a mechanical rough pump integrated with micromachined ion-pumps. The rough pump generates a low vacuum of tens of torr from atmospheric …
-
Design of curved electrodes to enable large stroke -- low voltage micro actuators
… practical devices. The first method uses air pressure to plastically deform a silicon membrane at high temperature. During wafer bonding, gas is trapped behind a thin silicon membrane. High temperature annealing causes the gas to pressurize, plastically deforming the silicon membrane. A model …
Page 1 of 2