| EPSRC Reference: |
GR/J23563/01 |
| Title: |
PREDICTION OF SLOW DRIFT DAMPING (COM 30) |
| Principal Investigator: |
Graham, Professor JM |
| Other Investigators: |
|
| Researcher Co-Investigators: |
|
| Project Partners: |
|
| Department: |
Aeronautics |
| Organisation: |
Imperial College London |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
21 July 1994 |
Ends: |
20 October 1996 |
Value (£): |
87,730
|
| EPSRC Research Topic Classifications: |
|
| EPSRC Industrial Sector Classifications: |
|
| Related Grants: |
|
| Panel History: |
|
|
Summary on Grant Application Form |
|
1. To develop further a vortex in cell computer program in simulate on a sectional basis separated flow induced by slow drift motion. 2. To incorporate this viscous model into a potential flow panel method including second order terms to predict slow drift damping of floating structures. (TLP and S) 3. To make comparisons with tow dimensional tests in a wave flume, for a range of section geometries. An existing Navier Stokes solver based on vortex methods will be used to generate two dimensional flow results for separated flow about sections of a floating body undergoing slow drift oscillation. This inner viscous solution will be added to an out second order panel method (developed from an existing code) for the inter action of a wave field with a three dimensional floating body, in order to provide a method of predicting the viscous damping component in slwo drift oscillation. The combined code which will include both the inviscid and viscous force components will be used to study slow drift oscillation of a two dimensional hull section with a range of bilge geometries and three dimensional configurations (TLP and deep draught floater) for which experimental data are available. The two dimensional studies at small scale will be compared with experimental measurements carried out in a wave flume equipped with provision to undertake large amplitude, low frequency forced motion testing in waves. The main output of the research will be a validated and documented computer program. A subsidiary output will be a greater understanding of the effects of local features, such as bilge geometry on the viscous damping, which will be useful for design purposes.
|
|
Key Findings |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Potential use in non-academic contexts |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
|
Impacts |
|
| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
|
| Date Materialised |
|
|
|
|
Sectors submitted by the Researcher |
|
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
|
| Project URL: |
|
| Further Information: |
|
| Organisation Website: |
http://www.imperial.ac.uk |