MULTIPLICITY OF STEADY SOLUTIONS IN LID-DRIVEN CAVITY FLOWS USING AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

RAHMATI A.R.; Lotfy R.; SHAHBAZI A.

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Seminar Paper

Paper Information

Seminar: CONFERENCE OF IRANIAN AEROSPACE SOCIETY
Year:2015 | Issue:14

Download Full-Text

View:

125

Download:

Information Seminar Paper

Title

MULTIPLICITY OF STEADY SOLUTIONS IN LID-DRIVEN CAVITY FLOWS USING AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD

Author(s)

RAHMATI A.R. | Lotfy R. | SHAHBAZI A.

Keywords

LATTICE BOLTZMANN METHOD

D2Q9 MODEL

TWO-SIDED SQUARE CAVITY

PARALLEL AND ANTIPARALLEL

Abstract

THIS WORK IS CONCERNED WITH THE COMPUTATION OF TWOSIDED LID-DRIVEN SQUARE CAVITY FLOWS BY THE LATTICE BOLTZMANN METHOD (LBM) TO OBTAIN MULTIPLE STABLE SOLUTIONS. THE VELOCITY FIELD IS SOLVED BY AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD. IN THE TWO-SIDED SQUARE CAVITY TWO OF THE WALLS MOVE WITH EQUAL VELOCITY MOVE IN SUCH A WAY THAT PARALLEL WALLS MOVE IN OPPOSITE DIRECTIONS WITH THE SAME VELOCITY. CONVENTIONAL NUMERICAL SOLUTIONS SHOW THAT THE SYMMETRIC SOLUTIONS EXIST FOR ALL REYNOLDS NUMBERS FOR ALL THE GEOMETRIES, WHEREAS MULTIPLICITY OF STABLE STATES EXIST ONLY ABOVE CERTAIN CRITICAL REYNOLDS NUMBERS. HERE WE DEMONSTRATE THAT LATTICE BOLTZMANN METHOD CAN BE EFFECTIVELY USED TO CAPTURE MULTIPLE STEADY SOLUTIONS FOR ALL THE AFORESAID GEOMETRIES. THE STRATEGY EMPLOYED TO OBTAIN THESE SOLUTIONS IS ALSO DESCRIBED. AT LOW REYNOLDS NUMBERS, THE RESULTING FLOW FIELD IS SYMMETRIC WITH RESPECT TO ONE OF THE CAVITY DIAGONALS FOR THE TWO-SIDED DRIVEN CAVITY, WHILE IT IS SYMMETRIC WITH RESPECT TO BOTH CAVITY DIAGONALS FOR THE FOUR-SIDED DRIVEN CAVITY. IT IS FOUND THAT FOR PARALLEL MOTION OF THE WALLS, THERE APPEARS A PAIR OF COUNTER-ROTATING SECONDARY VORTICES OF EQUAL SIZE NEAR THE CENTER OF A WALL. BECAUSE OF SYMMETRY, THIS PAIR OF COUNTER-ROTATING VORTICES HAS SIMILAR SHAPES AND THEIR DETAILED STUDY AS TO HOW THEY GROW WITH INCREASING REYNOLDS NUMBER HAS NOT YET BEEN MADE BY LATTICE BOLTZMANN METHOD.

Cites

No record.

References

No record.

Cite

APA: Copy

RAHMATI, A.R., Lotfy, R., & SHAHBAZI, A.. (2015). MULTIPLICITY OF STEADY SOLUTIONS IN LID-DRIVEN CAVITY FLOWS USING AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD. CONFERENCE OF IRANIAN AEROSPACE SOCIETY. SID. https://sid.ir/paper/945723/en

Vancouver: Copy

RAHMATI A.R., Lotfy R., SHAHBAZI A.. MULTIPLICITY OF STEADY SOLUTIONS IN LID-DRIVEN CAVITY FLOWS USING AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD. 2015. Available from: https://sid.ir/paper/945723/en

IEEE: Copy

A.R. RAHMATI, R. Lotfy, and A. SHAHBAZI, “MULTIPLICITY OF STEADY SOLUTIONS IN LID-DRIVEN CAVITY FLOWS USING AN INCOMPRESSIBLE GENERALIZED LATTICE BOLTZMANN METHOD,” presented at the CONFERENCE OF IRANIAN AEROSPACE SOCIETY. 2015, [Online]. Available: https://sid.ir/paper/945723/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops