Thematische Bibliographien / Jetflap

Inhaltsverzeichnis

  1. Zeitschriftenartikel
  2. Dissertationen
  3. Bücher
  4. Konferenzberichte

Auswahl der wissenschaftlichen Literatur zum Thema „Jetflap“

Autor: Grafiati
Veröffentlicht am 28. Juni 2021
Zuletzt aktualisiert am 12. Februar 2022

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Zeitschriftenartikel zum Thema "Jetflap"

1

Yong, Z., und R. Kovacevic. „Simulation of Chaotic Particle Motion in Particle-Laden Jetflow and Application to Abrasive Waterjet Machining“. Journal of Fluids Engineering 119, Nr. 2 (01.06.1997): 435–42. http://dx.doi.org/10.1115/1.2819152.

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A novel method is presented for modeling the abrasive waterjet machining process. Particle motion on the cross section of particle-laden jetflow is simulated in order to quantify the erosion contributions of millions of particles having different kinematic behaviors. The simulation is performed using fractal point sets with chaotic behavior for the cases of circular and noncircular (elliptical, triangular) jets. The jetflow constructed can be endowed with any desired velocity profile and/or particle flowrate. In association with a classical constitutive equation for estimating the penetration ability of a particle, the drilling and cutting operations are simulated and verified by experiment for titanium, glass, and other materials. Roughness and waviness of the cutting surfaces are also simulated and there is good consistency between theory and experiment. Triangular and elliptical jetflows are utilized to explore potential applications of noncircular abrasive waterjets.
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2

Yong, Z., und R. Kovacevic. „Modeling of jetflow drilling with consideration of the chaotic erosion histories of particles“. Wear 209, Nr. 1-2 (August 1997): 284–91. http://dx.doi.org/10.1016/s0043-1648(97)00032-x.

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3

Yokota, S., K. Nakano und Y. Tanaka. „Oscillatory flow in the jetflow region through cylindrical chokes. 1-st report Flow visualization.“ Hydraulics & Pneumatics 17, Nr. 6 (1986): 469–75. http://dx.doi.org/10.5739/jfps1970.17.469.

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4

Yokota, S., K. Nakano und Y. Tanaka. „Oscillatory flow in the jetflow region through cylindrical chokes. 2-nd report Numerical analysis.“ Hydraulics & Pneumatics 17, Nr. 6 (1986): 476–81. http://dx.doi.org/10.5739/jfps1970.17.476.

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5

Wang, Yong-Xin, Yang Chen, Shuai-Xia Tan, Yan-Fang Li, Ning Zhao, Jian Xu und Li-Na Zhang. „The Propulsion of a Miniature Device by Organic Fluid Jetflow through Polymer Submicron Tubes“. Chinese Physics Letters 30, Nr. 12 (Dezember 2013): 126801. http://dx.doi.org/10.1088/0256-307x/30/12/126801.

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6

Yong, Z., und R. Kovacevic. „Fundamentals of constructing particle-laden jetflow by fractal point sets and predicting 3D solid-erosion rates“. Chaos, Solitons & Fractals 8, Nr. 2 (Februar 1997): 207–20. http://dx.doi.org/10.1016/s0960-0779(96)00049-5.

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7

NOMURA, Naoyuki, Atsushi IWASAKI und Tuneya SUGIYA. „20714 Derivation of probability of failure for risk assessment via monitoring system of jetfan“. Proceedings of Conference of Kanto Branch 2010.16 (2010): 235–36. http://dx.doi.org/10.1299/jsmekanto.2010.16.235.

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Dissertationen zum Thema "Jetflap"

1

Novák, Ondřej. „Aerodynamická analýza protipumpážních úprav turbovrtulového motoru“. Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443213.

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Tahle práce se zaměřila na aerodynamickou analýzu principů zvyšování pumpážních záloh. V první kapitole jsou popsány kompresory leteckých motorů a zavedeny potřebné znalosti kompresorových charakteristik a proti-pumpážních zařízení. V druhé kapitole se nachází detailní popis CFD modelu, jeho nastavení, citlivostní analýzy sítě a korelace výsledků s experimentálním měřením. V třetí kapitole jsou popsány data neupraveného kompresoru a jsou zde popsány problematická místa první stupně kompresoru z pohledu proti-pumpážních zařízení. Ve čtvrté kaptiole jsou popsány CFD výsledky z analýz jednotlivých proti-pumpážních zařízení a také popis jejich optimalizace. Práce je zakončena srovnáním jednotlivých zařízení pomocí dvou objektivních kritérií.
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2

Guillén, Paredes Henry Antonio, Echevarría Christian Mitzar Navarro und Orozco Alfredo Gastón Simón. „Estudio de factibilidad para la introducción del producto Jetfloat tm en el mercado peruano“. Master's thesis, Universidad Peruana de Ciencias Aplicadas (UPC), 2006. http://hdl.handle.net/10757/624564.

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El estudio realizado en la presente tesis, nos permite demostrar que el negocio es factible y rentable de tal forma que a partir del 3 año, se obtiene la recuperación de la inversión inicial, la misma que asciende a US$.30.000 dólares americanos, esperando un retorno de 3 veces el valor invertido al cabo de los 10 años, considerando un costo de capital del 13%, tal como lo señalaran los accionistas. La ventaja competitiva sostenible para este negocio está dada por el respaldo de casa matriz, las características propias del producto que son bastante apreciadas por el cliente y diferentes a lo ofrecido actualmente, de la misma forma posicionarnos como un concepto novedoso y moderno, satisfaciendo las necesidades del cliente. Adicionalmente el negocio de la acuicultura así como entretenimiento tendrá un crecimiento significativo en nuestro país, lo que influye positiva y directamente en las ventas de esta propuesta de negocio. Así mismo, tenemos la oportunidad de un crecimiento potencial abastecer de estos productos a los países vecinos, puesto que no existe en la actualidad la distribución de los mismos y contamos con la primera opción de distribución en los mencionados países.
Tesis
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Bücher zum Thema "Jetflap"

1

Early MiG fighters in action. Carrollton: Squadron/Signal Publications, 2006.

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2

Balous, Miroslav. Heinkel He 162 Spatz (Volksjäger). Praha: Miroslav Bílý, 2004.

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3

Lavochkin's Last Jet (Red Star). Midland Publishing, 2007.

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4

Gordon, Yefim. Tupolev Tu-22M (Russian Aircraft in Action). Polygon Press, 2005.

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5

Gordon, Yefim. Sukhoi SU-24 (Russian Aircraft in Action). Polygon Press, 2005.

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6

Gordon, Yefim. Tupolev Tu-104: Aeroflot's First Jetliner (Red Star). Midland Publishing, 2008.

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7

F-8 Crusader - Walk Around No. 38. Squadron/Signal Publications, 2005.

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8

Libis, Scott. Skystreak, Skyrocket, & Stiletto: Douglas High-Speed X-Planes. Specialty Press, 2005.

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Konferenzberichte zum Thema "Jetflap"

1

Mirzamoghadam, Alexander V. „Investigation of the Flow and Heat Transfer in a Low Pressure Turbine Interdisc Cavity With Skewed Radial Jetflow“. In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-308.

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Heat transfer in the low pressure turbine interdisc cavity of an aero gas turbine engine with a closed rotating outer-rim and forced radially outward jetflow directed along the downstream disc-cob front face was partially investigated by experiment and theory as part of an advanced cooling design concept study. Within the interdisc cavity, several metal temperature transient and steady state measurements in the circumferential direction as well as the 2-D axisymmetric plane at rotating speeds of 1500 rpm and 7000 rpm were made. The results are based on matching the measured metal and air temperature at both speed levels as well as the transient behavior between the two speed levels to those predicted by the 2-D axisymmetric transient thermal model. A qualitative description of the 3-D nature of the flow field is given with the aid of CFD studies. The results indicate that the skewed forced jetflow produces a stronger variation to the level of heat transfer at high rotating speed. The jetflow partially penetrates outward through the cavity providing enhanced free-disc forced convection heat transfer (approximately 25%) at high rotating speed to about 70% of the downstream disc radial length only. Toward the rim subcavities, the level of heat transfer drops considerably compared to that of a free-disc and heat transfer along the hot rotating rim and colder flange surfaces are described by flat plate natural convection. The jetflow exits the cavity at the bore of the upstream disc by turning forward within the cavity, substantially reducing the level of heat transfer along the diaphragm of this disc, and providing forced convection heat transfer on the cob whose level is higher than the rest of the upstream disc represented by natural convection. At low rotating speed, a dominating mixed convection mechanism is evident throughout the interdisc cavity with significantly lesser variation in heat transfer. A critical Gr/Re2 value of 0.02 was established as the minimum where both natural and forced convection are important. The resulting behavior in local heat transfer coefficient and Nusselt number along the hot bolted rim and the discs are compared with those of previous investigators looking at heat transfer in a rotating cavity.
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2

Zimmermann, C., und H. Stetter. „Experimental Determination of the Flow Field in the Tip Region of a LP-Steam Turbine“. In ASME 1993 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/93-gt-106.

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Pneumatic multihole probes were applied to determine the local flow field in the tip region of a LP–steam turbine. For three tip clearances measurements were carried out varying the operating point of the turbine from full to partial load each. The maxima of the tip clearance flow and the resulting jetflow in the adjacent axial–radial diffusor show a strong dependency on the operating point, the width of the tip gap, and the axial distance to the rotor. In contrast, the radial extension of the jetflow is primarily influenced by the operating point and limited to the upper 10% of the flow channel. The leakage flow rate and the interaction with the main flow are increasing when widening the tip clearance which leads to a significant global efficiency deficit. In order to prevent a smooth flow through the tip gap, the design is changed by casing treatment upstream of the running wheel yielding a positive overlap of the gap. Its effect on the flow is investigated and compared to the other configurations of the turbine.
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