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Gas Turbines: Internal Flow Systems Modeling

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TLDR
In this article, a physics-first and design-oriented text describes and explains the underlying flow and heat transfer theory of secondary air systems and provides the reader with robust solution techniques, state-of-the-art three dimensional computational fluid dynamics (CFD) methodologies, and examples of compressible flow network modeling.
Abstract
This long-awaited, physics-first and design-oriented text describes and explains the underlying flow and heat transfer theory of secondary air systems. An applications-oriented focus throughout the book provides the reader with robust solution techniques, state-of-the-art three-dimensional computational fluid dynamics (CFD) methodologies, and examples of compressible flow network modeling. It clearly explains elusive concepts of windage, non-isentropic generalized vortex, Ekman boundary layer, rotor disk pumping, and centrifugally-driven buoyant convection associated with gas turbine secondary flow systems featuring rotation. The book employs physics-based, design-oriented methodology to compute windage and swirl distributions in a complex rotor cavity formed by surfaces with arbitrary rotation, counter-rotation, and no rotation. This text will be a valuable tool for aircraft engine and industrial gas turbine design engineers as well as graduate students enrolled in advanced special topics courses.

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Gas Turbines for Electric Power Generation

S. Can Gülen
TL;DR: In this paper, the authors present an accessible discussion of electric power generation with gas turbine power plants using quantitative and qualitative tools, including a discussion of thermodynamics of gas turbine cycles from a second law perspective.
Journal ArticleDOI

Performance enhancement of the gas turbine combined cycle by simultaneous reheating, recuperation, and coolant inter-cooling

TL;DR: In this article, three cases of coolant cooling were analyzed to compensate for the power deficit and improve the efficiency: coolant inter-cooling, coolant precooling and conventional intercooling.
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Transient modelling and simulation of gas turbine secondary air system

TL;DR: In this paper, the secondary air system of a two-spool turbofan engine is modelled and simulated in transient mode, under two pre-defined scenarios for step and scheduled boundary condition variations.
Posted Content

An analytical study in multi physics and multi criteria shape optimization

TL;DR: In this article, a simple multi-physical system for the potential flow of a fluid through a shroud in which a mechanical component, like a turbine vane, is modeled mathematically.
References
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The Engines of Pratt & Whitney: A Technical History

Jack Connors, +1 more
TL;DR: The Engines of Pratt & Whitney: A Technical History as discussed by the authors describes the evolution from piston engines to gas turbines by the engineers who created those engines, including hundreds of archival photographs, as well as over a dozen tables listing specifications and applications.
Book

Fluid Mechanics : An Intermediate Approach

TL;DR: Fluid Mechanics: An Intermediate Approach as mentioned in this paper addresses the problems facing engineers today by taking on practical, rather than theoretical problems, instead of following an approach that focuses on mathematics first.
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Direct-transfer preswirl system: A one-dimensional modular characterization of the flow

TL;DR: In this paper, the discharge behavior of a direct-transfer preswirl system has been investigated experimentally for different number of receiver holes and different inlet geometries, varying axial gap widths between stator and rotor and for rotational Reynolds numbers up to Re Φ =2.3×10 6.
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The Leakage Thru Straight and Slant Labyrinths and Honeycomb Seals

TL;DR: Leakage tests have been run over a wide range of pressure ratios and clearances for several types of labyrinth seals and the results of these tests show some important differences compared to previous theory as mentioned in this paper.

Fundamentals of fluid sealing

TL;DR: In this article, the fundamentals of fluid sealing, including seal operating regimes, are discussed and the general fluid-flow equations for fluid sealing are developed, including the effects of geometry, surface deformations, rotation, and both laminar and turbulent flows.
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