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Bibliografías temáticas / Unsteady computations

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Literatura académica sobre el tema "Unsteady computations"

Autor: Grafiati

Publicado: 10 de marzo de 2023

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Tesis sobre el tema "Unsteady computations"

1

Hellström, Fredrik. "Numerical computations of the unsteady flow in turbochargers." Doctoral thesis, KTH, Strömningsfysik, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-12742.

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Turbocharging the internal combustion (IC) engine is a common technique to increase the power density. If turbocharging is used with the downsizing technique, the fuel consumption and pollution of green house gases can be decreased. In the turbocharger, the energy of the engine exhaust gas is extracted by expanding it through the turbine which drives the compressor by a shaft. If a turbocharged IC engine is compared with a natural aspirated engine, the turbocharged engine will be smaller, lighter and will also have a better efficiency, due to less pump losses, lower inertia of the system and l

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2

Wu, Jiongyang. "Filter-based modeling of unsteady turbulent cavitating flow computations." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0011587.

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3

Hellström, Fredrik. "Numerical computations of the unsteady flow in a radial turbine." Licentiate thesis, KTH, Mechanics, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4660.

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<p>Non-pulsatile and pulsatile flow in bent pipes and radial turbine has been assessed with numerical simulations. The flow field in a single bent pipe has been computed with different turbulence modelling approaches. A comparison with measured data shows that Implicit Large Eddy Simulation (ILES) gives the best agreement in terms of mean flow quantities. All computations with the different turbulence models qualitatively capture the so called Dean vortices. The Dean vortices are a pair of counter-rotating vortices that are created in the bend, due to inertial effects in combination with a rad

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4

De, Rango Stan. "Implicit Navier-Stokes computations of unsteady flows using subiteration methods." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1996. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ51537.pdf.

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5

Hellström, Fredrik. "Numerical computations of the unsteady flow in a radial turbine /." Stockholm : Mekanik, Kungliga Tekniska högskolan, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4660.

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6

Nöid, Lovisa. "CFD computations of hydropower plant intake flow using unsteady RANS." Thesis, KTH, Kraft- och värmeteknologi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-161894.

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At the intake of hydropower plants, air-core vortex formation is known to cause severe damage. In order to study how to prevent and reduce the origin of the vortex, Vattenfall has built a scale model of the Akkats hydropower plant dam, where scale testing is possible. This thesis work consists of discerning whether Computational Fluid Dynamics (CFD) in terms of solving the Unsteady Reynolds Average Navier-Stokes equations (URANS) can be used as a complement to scale testing. For this work, the RNG k-epsilon turbulence model is chosen, and the flow field is solved with implicit time discretizat

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7

Reid, Terry Vincent. "A Computational Approach For Investigating Unsteady Turbine Heat Transfer Due To Shock Wave Impact." Diss., Virginia Tech, 1998. http://hdl.handle.net/10919/25983.

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The effects of shock wave impact on unsteady turbine heat transfer are investigated. A numerical approach is developed to simulate the flow physics present in a previously performed unsteady wind tunnel experiment. The windtunnel experiment included unheated and heated flows over a cascade of highly loaded turbine blades. After the flow over the blades was established, a single shock with a pressure ratio of 1.1 was introduced into the wind tunnel test section. A single blade was equipped with pressure transducers and heat flux microsensors. As the shock wave strikes the blade, time resolved

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8

Price, Jennifer Lou. "Unsteady Measurements and Computations on an Oscillating Airfoil with Gurney Flaps." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010713-170959.

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<p>Price, Jennifer Lou. Unsteady Measurements and Computations on an Oscillating Airfoil with Gurney Flaps. (Under the direction of Dr. Ndaona Chokani)The effect of a Gurney flap on an unsteady airfoil flow is experimentally and computationally examined. In the experiment, the details of the unsteady boundary layer events on the forward portion of the airfoil are measured. In the computation, the features of the global unsteady flow are documented and correlated with the experimental observations.The experiments were conducted in the North Carolina State University subsonic wind tunnel on an o

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9

Bodin, Olle. "Numerical Computations of Internal Combustion Engine related Transonic and Unsteady Flows." Licentiate thesis, Stockholm : Mekanik, Kungliga Tekniska högskolan, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-9945.

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10

Novacek, Thomas Hans. "Computations of unsteady forces and moments for a transonic rotor with jet actuation." Thesis, Massachusetts Institute of Technology, 1997. http://hdl.handle.net/1721.1/50300.

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