Evaluation of fluid dynamic oscillations by means of uRANS CFD methods
Computational Fluid Dynamics (CFD) techniques are very viable and economical alternatives to experimental techniques in the present day world. They can offer much better insight into different aspects of the flow field which can never be achieved using experimental methods. In this thesis, a CFD ana...
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| Format: | Thesis |
| Language: | English |
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2013
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| Online Access: | http://hdl.handle.net/10356/53727 |
| _version_ | 1826124341572534272 |
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| author | Gidda, Prabhakr Naidu. |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Gidda, Prabhakr Naidu. |
| author_sort | Gidda, Prabhakr Naidu. |
| collection | NTU |
| description | Computational Fluid Dynamics (CFD) techniques are very viable and economical alternatives to experimental techniques in the present day world. They can offer much better insight into different aspects of the flow field which can never be achieved using experimental methods. In this thesis, a CFD analysis was carried out on flow over cavities of different sizes. It was found out that flow over cavities caused severe unsteady aerodynamic loading that resulted in various fluid oscillations within the cavity shear layer. These oscillations in turn caused severe unsteady pressure loading and noise radiation in various places like weapon bays in fighter aircrafts and in turbo machinery. The purpose of the thesis was to identify a few flow conditions where these oscillations occurred. |
| first_indexed | 2024-10-01T06:19:03Z |
| format | Thesis |
| id | ntu-10356/53727 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:19:03Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/537272023-03-11T17:12:44Z Evaluation of fluid dynamic oscillations by means of uRANS CFD methods Gidda, Prabhakr Naidu. School of Mechanical and Aerospace Engineering Tobias Frobel DRNTU::Engineering::Mechanical engineering Computational Fluid Dynamics (CFD) techniques are very viable and economical alternatives to experimental techniques in the present day world. They can offer much better insight into different aspects of the flow field which can never be achieved using experimental methods. In this thesis, a CFD analysis was carried out on flow over cavities of different sizes. It was found out that flow over cavities caused severe unsteady aerodynamic loading that resulted in various fluid oscillations within the cavity shear layer. These oscillations in turn caused severe unsteady pressure loading and noise radiation in various places like weapon bays in fighter aircrafts and in turbo machinery. The purpose of the thesis was to identify a few flow conditions where these oscillations occurred. Master of Engineering (MAE) 2013-06-07T02:29:09Z 2013-06-07T02:29:09Z 2012 2012 Thesis http://hdl.handle.net/10356/53727 en 82 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Mechanical engineering Gidda, Prabhakr Naidu. Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title | Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title_full | Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title_fullStr | Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title_full_unstemmed | Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title_short | Evaluation of fluid dynamic oscillations by means of uRANS CFD methods |
| title_sort | evaluation of fluid dynamic oscillations by means of urans cfd methods |
| topic | DRNTU::Engineering::Mechanical engineering |
| url | http://hdl.handle.net/10356/53727 |
| work_keys_str_mv | AT giddaprabhakrnaidu evaluationoffluiddynamicoscillationsbymeansofuranscfdmethods |