Results 91 to 100 of about 13,402 (209)
An experimental study of energy loss mechanisms and efficiency consideration in the low power dc arcjet [PDF]
The potential utility of the low power dc arcjet in auxiliary propulsion was investigated. It was indicated that improvements in the areas of stability, energy efficiency, reliability, and electrode erosion are necessary to obtain a useful device.
Curran, F. M.
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Journal of Marine Science and EngineeringThe stability of axial flow pumps is significantly affected by the tip leakage vortex (TLV), which is generated through the entrainment of the main flow.
Haoran Wu +4 more
doaj +1 more source
Parametric study of casing treatment for turbine blade in aero engine application [PDF]
, 2013 Tato diplomová práce otevírá otázku možnosti zlepšení vlastností kompresoru za pomoci numerické simulace proudění. Hlavním cílem je zvýšení operačního rozsahu na jednom stupni axiálního kompresoru s využitím zařízení pro pasivní kontrolu proudu ...
Kníř, Jakub
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Upgraded automotive gas turbine engine design and development program, volume 2 [PDF]
Results are presented for the design and development of an upgraded engine. The design incorporated technology advancements which resulted from development testing on the Baseline Engine. The final engine performance with all retro-fitted components from
Pampreen, R. C., Wagner, C. E.
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Cavitation in Axial Flow Pumps: Termination Report [PDF]
, 1956 A series of cavitation experiments in an axial flow pump are described. It is found that cavitation first occurs in a tip vortex formed by the flow through the tip clearance space of the rotor blade.
Acosta, A. J.
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A prediction of 3-D viscous flow and performance of the NASA low-speed centrifugal compressor [PDF]
A prediction of the 3-D turbulent flow in the NASA Low-Speed Centrifugal Compressor Impeller has been made. The calculation was made for the compressor design conditions with the specified uniform tip clearance gap.
Moore, Joan G., Moore, John
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Preliminary performance and life evaluations of a 2-kW arcjet [PDF]
The first results of a program to expand the operational envelope of low-power arcjets to higher specific impulse and power levels are presented. The performance of a kW-class laboratory model arcjet thruster was characterized at three mass flow rates of
Curran, Francis M., Morren, W. Earl
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AerospaceThis study deals with the effectiveness of casing-injection for a few squealer tip designs in a turbine stage to mitigate tip leakage penalties. Seventy-two Unsteady Reynolds-Averaged Navier–Stokes (URANS) simulations were conducted.
Nasser Can Kasımbeyoğlu +2 more
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A Study of Tip Leakage Vortex Cavitation.
TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B, 2000 Seiji HIGASHI +2 more
openaire +2 more sources
Potential flow theory and operation guide for the panel code PMARC [PDF]
The theoretical basis for PMARC, a low-order potential-flow panel code for modeling complex three-dimensional geometries, is outlined. Several of the advanced features currently included in the code, such as internal flow modeling, a simple jet model ...
Ashby, Dale L. +4 more
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