A Preconditioned Method for Rotating Flows at Arbitrary Mach Number
Author
Source
Modelling and Simulation in Engineering
Issue
Vol. 2011, Issue 2011 (31 Dec. 2011), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-11-03
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
An improved preconditioning is proposed for viscous flow computations in rotating and nonrotating frames at arbitrary Mach numbers.
The key to the current method is the use of both free stream Mach number and rotating Mach number to construct a preconditioning matrix, which is applied to the compressible governing equations written in terms of primitive variables.
A Fourier analysis is conducted that reveals the efficacy of the modified preconditioning.
Numerical approximations for the convective and diffusive fluxes are detailed based on the preconditioned system of equations.
A set of boundary conditions using characteristic variables are described for internal and external flow computations.
Numerical validations are performed on four realistic viscous flows in both fixed and rotating frames.
The results indicated that the modified preconditioning has a superior performance compared to the original method to predict flows from extremely low to supersonic Mach numbers.
American Psychological Association (APA)
Sheng, Chunhua. 2011. A Preconditioned Method for Rotating Flows at Arbitrary Mach Number. Modelling and Simulation in Engineering،Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-479617
Modern Language Association (MLA)
Sheng, Chunhua. A Preconditioned Method for Rotating Flows at Arbitrary Mach Number. Modelling and Simulation in Engineering No. 2011 (2011), pp.1-17.
https://search.emarefa.net/detail/BIM-479617
American Medical Association (AMA)
Sheng, Chunhua. A Preconditioned Method for Rotating Flows at Arbitrary Mach Number. Modelling and Simulation in Engineering. 2011. Vol. 2011, no. 2011, pp.1-17.
https://search.emarefa.net/detail/BIM-479617
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-479617