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Keywords: modelling
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Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2003, 125(3): 442–454.
Published Online: August 27, 2003
... bladed disks are considered as physical approximations of the worst case disk and the mistuned properties are sought to maximize the response of a specific blade. This approach is exemplified on both a reduced order model of a blisk and a single-degree-of-freedom per blade disk model an extensive...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2002, 124(4): 580–587.
Published Online: November 7, 2002
...K. Mathioudakis, Associate Professor; Ph. Kamboukos, Research Assistant; A. Stamatis, Research Associate A method of identifying the gradual deterioration in the components of jet engines is presented. It is based on the use of an engine model which has the capability to adapt component condition...
Journal Articles
Article Type: Technical Papers
J. Turbomach. October 2002, 124(4): 597–605.
Published Online: November 7, 2002
...D. M. Feiner; J. H. Griffin A new reduced order model of mistuned bladed disk vibration is presented. This new approach is shown to accurately represent the response of real turbine geometries when only a single family of modes is excited. Yet its mathematical form is even simpler than...
Topics: Blades, Disks
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2002, 124(3): 472–484.
Published Online: July 10, 2002
...A. Azzi; D. Lakehal The paper presents recent trends in modeling jets in crossflow with relevance to film cooling of turbine blades. The aim is to compare two classes of turbulence models with respect to their predictive performance in reproducing near-wall flow physics and heat transfer. The study...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2002, 124(3): 485–498.
Published Online: July 10, 2002
...Djamel Lakehal The paper presents novel developments in the DNS-based, turbulence modeling strategy of Lakehal et al. developed for calculating jets in crossflow. The particular features of the model include: 1) dynamic coupling of the high-Re k − ε with a one-equation model resolving the near-wall...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 214–221.
Published Online: April 9, 2002
...J. B. Young; R. C. Wilcock This paper is Part II of a study concerned with developing a formal framework for modeling air-cooled gas turbine cycles. It deals with the detailed specification of coolant flowrates and losses. For accurate performance assessment, it is necessary to divide the turbine...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 193–199.
Published Online: April 9, 2002
...G. Medic; P. A. Durbin Computations of flow and heat transfer for a film-cooled high pressure gas turbine rotor blade geometry are presented with an assessment of several turbulence models. Details of flow and temperature field predictions in the vicinity of cooling holes are examined...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 275–284.
Published Online: April 9, 2002
.../stator spacing typical of core compressors, wake stretching is the dominant wake decay process within the stator with viscous mixing playing only a secondary role. A model for the rotor wake decay process is developed and used to quantify the viscous dissipation effects relative to those of inviscid wake...
Journal Articles
Article Type: Technical Papers
J. Turbomach. April 2002, 124(2): 207–213.
Published Online: April 9, 2002
...J. B. Young; R. C. Wilcock This paper is Part I of a study concerned with developing a formal framework for modeling air-cooled gas turbine cycles and deals with basic thermodynamic issues. Such cycles involve gas mixtures with varying composition which must be modeled realistically. A possible...
Journal Articles
Article Type: Technical Papers
J. Turbomach. July 2001, 123(3): 446–452.
Published Online: February 1, 2000
... identified by Thomas (1958. Bull. AIM, 71 , No. 11/12, pp. 1039–1063.) for turbines and by Alford (1965. J. Eng. Power, Oct., pp. 333–334) for jet engines. In Part I, the results from an experimental investigation of these phenomena were presented. In this Part II, three analytic models were used to predict...