Analytical investigation on mean and turbulent velocity fields of a plane jet

This paper concerns the analytical investigation of the GO-water nanofluid flow in a semi-porous channel. The Similarity Berman’s transformation is employed to convert the governing partial differential equations of a steady laminar flow of an electrically conducting fluid in a two dimensional channel. Reconstruction of Variational Iteration Method (RVIM) has been used to obtain the expressions for velocity fields. Graphs are sketched and discussed for various parameters, especially the effect of the expansion ratio on velocity fields. The results indicated that the Reynolds number, Hartmann number and solid volume fraction have strong effect on velocity boundary layer thickness.

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Direct tensor filter method for synthetic turbulent field generation

Keldysh Institute Preprints ◽

10.20948/prepr-2021-95 ◽

2021 ◽

pp. 1-15

Author(s):

Anatoly Vitalievich Alexandrov ◽

Ludwig Waclawovich Dorodnicyn

Keyword(s):

Velocity Fields ◽

Turbulent Velocity ◽

Filter Method ◽

Field Generation ◽

Turbulent Field ◽

Anisotropic Filter

A Direct Tensor Filter Method for synthetic turbulent field generation is proposed in this paper. The method is a generalization of the Direct Anisotropic Filter Method. The turbulent velocity fields built on the base of this method provides more properties corresponding to real physical turbulent fields in comparison to ones obtained with help of DAF method.

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Measurements of Local Scaling of Turbulent Velocity Fields at High Reynolds Numbers

Topological Aspects of the Dynamics of Fluids and Plasmas ◽

10.1007/978-94-017-3550-6_26 ◽

1992 ◽

pp. 443-461

Author(s):

G. M. Zaslavsky ◽

A. A. Chernikov ◽

A. A. Praskovsky ◽

M. Yu. Karyakin ◽

D. A. Usikov

Keyword(s):

Reynolds Numbers ◽

Velocity Fields ◽

Turbulent Velocity ◽

Local Scaling ◽

High Reynolds Numbers ◽

High Reynolds

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The Structure of Turbulent Velocity Fields.

10.21236/ada065666 ◽

1978 ◽

Cited By ~ 1

Author(s):

F. H. Champagne

Keyword(s):

Velocity Fields ◽

Turbulent Velocity

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Spatio-Temporal Analysis of Photospheric Turbulent Velocity Fields Using the Proper Orthogonal Decomposition

Solar Physics ◽

10.1007/s11207-008-9141-8 ◽

2008 ◽

Vol 251 (1-2) ◽

pp. 163-178 ◽

Cited By ~ 6

Author(s):

A. Vecchio ◽

V. Carbone ◽

F. Lepreti ◽

L. Primavera ◽

L. Sorriso-Valvo ◽

...

Keyword(s):

Proper Orthogonal Decomposition ◽

Temporal Analysis ◽

Velocity Fields ◽

Orthogonal Decomposition ◽

Turbulent Velocity ◽

Spatio Temporal ◽

Proper Orthogonal

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A comparative study of turbulent velocity fields in an internal combustion engine with shrouded valve and flat/bowl piston configurations

Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science ◽

10.1243/09544062jmes762 ◽

2007 ◽

Vol 221 (12) ◽

pp. 1597-1607 ◽

Cited By ~ 3

Author(s):

A Erdil ◽

A Kodal

Keyword(s):

Internal Combustion Engine ◽

Combustion Engine ◽

Engine Performance ◽

Internal Combustion ◽

Velocity Fields ◽

Turbulent Velocity ◽

Energy Spectra ◽

Hot Wire ◽

Phase Average ◽

Proper Orthogonal

In the current study, the phase averaging and the proper orthogonal decomposition (POD) methods are used to decompose experimentally measured turbulent velocity fields in an internal combustion engine. Radial and circumferential turbulent velocity fields were measured using hot wire anemometer under motoring conditions for both flat and bowl piston configurations. Decomposed results of the phase average and POD methods are compared with each other. The effects of piston configuration on the engine performance have been discussed. Also, obtained organized and turbulence motions and their energy spectra are examined. Finally, coherent structures of velocity fields and their activities are investigated.

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