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Methodology for the Numerical Characterization of a Radial Turbine under Steady and Pulsating Flow (Paperback) Loot Price: R2,751
Discovery Miles 27 510
Methodology for the Numerical Characterization of a Radial Turbine under Steady and Pulsating Flow (Paperback): Pablo Fajardo

Methodology for the Numerical Characterization of a Radial Turbine under Steady and Pulsating Flow (Paperback)

Pablo Fajardo

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Loot Price R2,751 Discovery Miles 27 510 | Repayment Terms: R258 pm x 12*

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Doctoral Thesis / Dissertation from the year 2012 in the subject Engineering - Mechanical Engineering, Universidad Politecnica de Valencia (Departamento de Maquinas y Motores Termicos), language: English, abstract: The increasing use of turbochargers is leading to an outstanding research to understand the internal flow in turbomachines. In this frame, computational fluid dynamics (CFD) is one of the tools that can be applied to contribute to the analysis of the fluid-dynamic processes occurring in a turbine. The objective of this thesis is the development of a methodology for performing simulations of radial turbomachinery optimizing the available computational resources. This methodology is used for the characterization of a vaned-nozzle turbine under steady and pulsating flow conditions. An important effort has been devoted in adjusting the case configuration to maximize the accuracy achievable with a certain computational cost. Concerning the cell size, a local mesh independence analysis is proposed as a procedure to optimize the distribution of cells in the domain, thus allowing to use a finer mesh in the most suitable places. Particularly important in turbomachinery simulations is the influence of the approach for simulating rotor motion. In this thesis two models have been compared: multiple reference frame and sliding mesh. The differences obtained using both methods were found to be significant in off-design regions. Steady flow CFD results have been validated against global measurements taken on a gas-stand. The modeling of a turbine, installed either on a turbocharger test rig or an engine, requires the calculation of the flow in the ducts composing the system. Those ducts could be simulated assuming a one-dimensional (1D) approximation, and thus reducing the computational cost. In this frame of ideas, two CFD boundary conditions have been developed. The first one allows performing coupled 1D-3D simulations, communicating the flow variables from each dom

General

Imprint: Grin Verlag
Country of origin: United States
Release date: October 2013
First published: October 2013
Authors: Pablo Fajardo
Dimensions: 210 x 148 x 14mm (L x W x T)
Format: Paperback - Trade
Pages: 248
ISBN-13: 978-3-656-50723-9
Categories: Books > Professional & Technical > Technology: general issues > Engineering: general
Books > Professional & Technical > Industrial chemistry & manufacturing technologies > General
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LSN: 3-656-50723-6
Barcode: 9783656507239

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