Numerical simulation of flow past a square cylinder
(1999) 3rd ASME/JSME Joint Fluids Engineering Conference- Abstract
- 2D and 3D unsteady flow past a rigid prism of a square
cross-section with one side facing the oncoming flow is numerically simulated for Reynolds numbers between 200 to 500. An incompressible code is used employing an implicit fractional step method finite-volume with second-order accuracy in space and time. For 2D flow, it is found that, for Re >300, the time-mean flow patterns are not perfectly symmetric with respect to the oncoming flow. In contrast, such a non-symmetric mean flow pattern is not observed in 3D simulations. There is a marked and characteristic pulsation in the force components in the 3D flow for Re <300. These force pulsations contain characteristic time periods with high and low levels of forces.... (More) - 2D and 3D unsteady flow past a rigid prism of a square
cross-section with one side facing the oncoming flow is numerically simulated for Reynolds numbers between 200 to 500. An incompressible code is used employing an implicit fractional step method finite-volume with second-order accuracy in space and time. For 2D flow, it is found that, for Re >300, the time-mean flow patterns are not perfectly symmetric with respect to the oncoming flow. In contrast, such a non-symmetric mean flow pattern is not observed in 3D simulations. There is a marked and characteristic pulsation in the force components in the 3D flow for Re <300. These force pulsations contain characteristic time periods with high and low levels of forces. It is found that when the flow is within a low levels of forces the intensity of threedimensional effects becomes stronger, whereas the opposite is true within a high level of forces. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/80d535b2-af3e-4e9d-96e2-80f6ae0c2afd
- author
- Sohankar, Ahmad ; Norberg, Christoffer LU and Davidson, Lars
- organization
- publishing date
- 1999-07
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- 3rd ASME/JSME Joint Fluids Engineering Conference, July 18-23, 1999, San Francisco, USA
- pages
- 6 pages
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- 3rd ASME/JSME Joint Fluids Engineering Conference
- conference location
- San Francisco, United States
- conference dates
- 1999-07-18 - 1999-07-23
- ISBN
- 9780791819616
- language
- English
- LU publication?
- yes
- additional info
- FEDSM99-7172
- id
- 80d535b2-af3e-4e9d-96e2-80f6ae0c2afd
- date added to LUP
- 2023-02-15 17:55:28
- date last changed
- 2023-02-23 15:11:00
@inproceedings{80d535b2-af3e-4e9d-96e2-80f6ae0c2afd, abstract = {{2D and 3D unsteady flow past a rigid prism of a square<br/>cross-section with one side facing the oncoming flow is numerically simulated for Reynolds numbers between 200 to 500. An incompressible code is used employing an implicit fractional step method finite-volume with second-order accuracy in space and time. For 2D flow, it is found that, for <i>Re </i>>300, the time-mean flow patterns are not perfectly symmetric with respect to the oncoming flow. In contrast, such a non-symmetric mean flow pattern is not observed in 3D simulations. There is a marked and characteristic pulsation in the force components in the 3D flow for <i>Re </i><300. These force pulsations contain characteristic time periods with high and low levels of forces. It is found that when the flow is within a low levels of forces the intensity of threedimensional effects becomes stronger, whereas the opposite is true within a high level of forces.}}, author = {{Sohankar, Ahmad and Norberg, Christoffer and Davidson, Lars}}, booktitle = {{3rd ASME/JSME Joint Fluids Engineering Conference, July 18-23, 1999, San Francisco, USA}}, isbn = {{9780791819616}}, language = {{eng}}, publisher = {{American Society Of Mechanical Engineers (ASME)}}, title = {{Numerical simulation of flow past a square cylinder}}, url = {{https://lup.lub.lu.se/search/files/137954956/Sohankar_al_ASME_JSME_1999.pdf}}, year = {{1999}}, }