Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722201463
Category :
Languages : en
Pages : 38
Book Description
A detailed comparison of ten low-Reynolds-number k-epsilon models is carried out. The flow solver, based on an implicit approximate factorization method, is designed for incompressible, steady two-dimensional flows. The conservation of mass is enforced by the artificial compressibility approach and the computational domain is discretized using centered finite differences. The turbulence model predictions of the flow past a hill are compared with experiments at Re = 10 exp 6. The effects of the grid spacing together with the numerical efficiency of the various formulations are investigated. The results show that the models provide a satisfactory prediction of the flow field in the presence of a favorable pressure gradient, while the accuracy rapidly deteriorates when a strong adverse pressure gradient is encountered. A newly proposed model form that does not explicitly depend on the wall distance seems promising for application to complex geometries. Michelassi, V. and Shih, T.-H. Unspecified Center NASA ORDER C-99066-G; RTOP 505-62-21...
Elliptic Flow Computation by Low Reynolds Number Two-Equation Turbulence Models
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722201463
Category :
Languages : en
Pages : 38
Book Description
A detailed comparison of ten low-Reynolds-number k-epsilon models is carried out. The flow solver, based on an implicit approximate factorization method, is designed for incompressible, steady two-dimensional flows. The conservation of mass is enforced by the artificial compressibility approach and the computational domain is discretized using centered finite differences. The turbulence model predictions of the flow past a hill are compared with experiments at Re = 10 exp 6. The effects of the grid spacing together with the numerical efficiency of the various formulations are investigated. The results show that the models provide a satisfactory prediction of the flow field in the presence of a favorable pressure gradient, while the accuracy rapidly deteriorates when a strong adverse pressure gradient is encountered. A newly proposed model form that does not explicitly depend on the wall distance seems promising for application to complex geometries. Michelassi, V. and Shih, T.-H. Unspecified Center NASA ORDER C-99066-G; RTOP 505-62-21...
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722201463
Category :
Languages : en
Pages : 38
Book Description
A detailed comparison of ten low-Reynolds-number k-epsilon models is carried out. The flow solver, based on an implicit approximate factorization method, is designed for incompressible, steady two-dimensional flows. The conservation of mass is enforced by the artificial compressibility approach and the computational domain is discretized using centered finite differences. The turbulence model predictions of the flow past a hill are compared with experiments at Re = 10 exp 6. The effects of the grid spacing together with the numerical efficiency of the various formulations are investigated. The results show that the models provide a satisfactory prediction of the flow field in the presence of a favorable pressure gradient, while the accuracy rapidly deteriorates when a strong adverse pressure gradient is encountered. A newly proposed model form that does not explicitly depend on the wall distance seems promising for application to complex geometries. Michelassi, V. and Shih, T.-H. Unspecified Center NASA ORDER C-99066-G; RTOP 505-62-21...
Elliptic Flow Computation by Low Reynolds Number Two-equation Turbulence Models
Author: V. Michelassi
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 40
Book Description
Elliptic Flow Computation by Low Reynolds Number Two-equation Turbulence Models
Author: V. Michelassi
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 40
Book Description
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 40
Book Description
Implementation/validation of a Low Reynolds Number Two-equation Turbulence Model in the Proteus Navier-Stokes Code: Two-dimensional/axisymmetric
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 24
Book Description
Engineering Turbulence Modelling and Experiments - 2
Author: F. Martelli
Publisher: Elsevier
ISBN: 1483298558
Category : Technology & Engineering
Languages : en
Pages : 1012
Book Description
Today understanding turbulence is one of the key issues in tackling flow problems in engineering. Powerful computers and numerical methods are now available for solving flow equations, but the simulation of turbulence effects, which are nearly always important in practice, are still at an early stage of development. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulence momentum, heat and mass transfer. The 89 papers, including 5 invited papers, in this volume present and discuss new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The high standard of the contributions on the developing and testing of turbulent models attests to the world-wide interest this domain is currently attracting from researchers.
Publisher: Elsevier
ISBN: 1483298558
Category : Technology & Engineering
Languages : en
Pages : 1012
Book Description
Today understanding turbulence is one of the key issues in tackling flow problems in engineering. Powerful computers and numerical methods are now available for solving flow equations, but the simulation of turbulence effects, which are nearly always important in practice, are still at an early stage of development. Successful simulation of turbulence requires the understanding of the complex physical phenomena involved and suitable models for describing the turbulence momentum, heat and mass transfer. The 89 papers, including 5 invited papers, in this volume present and discuss new developments in the area of turbulence modelling and measurements, with particular emphasis on engineering-related problems. The high standard of the contributions on the developing and testing of turbulent models attests to the world-wide interest this domain is currently attracting from researchers.
Center for Modeling of Turbulence and Transition (CMOTT)
Author:
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 208
Book Description
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 208
Book Description
Modification of the Two-equation Turbulence Model in NPARC to a Chien Low Reynolds Number K-e Formulation
Author: Nicholas J. Georgiadis
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 22
Book Description
Publisher:
ISBN:
Category : Turbulence
Languages : en
Pages : 22
Book Description
An investigation of the low Reynolds number two-equation turbulence models for pipe flows and channel flows
Author: Tzong-Huei Chen
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 262
Book Description
Publisher:
ISBN:
Category : Reynolds number
Languages : en
Pages : 262
Book Description
Computation of Turbulent Flows
Author: W. C. Reynolds
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 98
Book Description
Turbulence Models and Reynolds Analogy for Two-dimensional Supersonic Compression Ramp Flow
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 14
Book Description