 |
| Titel |
Dispersion in harbour and coastal areas |
| VerfasserIn |
M. Diez, R. Castilla |
| Konferenz |
EGU General Assembly 2010
|
| Medientyp |
Artikel
|
| Sprache |
Englisch
|
| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 12 (2010) |
| Datensatznummer |
250044521
|
|
|
|
|
|
| Zusammenfassung |
| Experimental results of turbulent flows in the sea surface near the
coastline have been performed using both Lagrangian and Eulerian methods, field tests are presented using video recordings and velocity sensors[1]. The spatial and temporal resolution is limited by the measuring instruments, which results in “filtering” out the very small scales. The experimental field-results obtained during the Vilanova i la geltru experiments [2], under reduced longshore currents and spilling/plunging breaking waves are compared with experiments performed at the Barcelona harbour. The field-measurements include several tests across the surf and enclosed zones. The measured turbulent properties are compared with macroturbulence characteristics and parameterisations [2,3]. Diffusion is measured and related to the local velocity spectra so that a generalized Richardson law may be used, Numerical models on turbulent dispersion for different spectra are compared with the measurements [4,5].
[1] Diez M., Estudio de la Hidrodinamica de la zona de rompientes mediante el analisis digital de imagenes, Master Thesis, UPC, Barcelona (1998).
[2] Bezerra M. O., Diez M., Medeiros C., Rodriguez A., Bahia E., Sanchez-Arcilla A. and Redondo J. M., J. Flow Turb. Combust., 59 (1998) 127.
[3] Rodriguez A., Sanchez-Arcilla A., Redondo J. M. and Mosso C., Exp. Fluids, 27(1999) 31.
[4] Castilla R., Simulacion cinematica de flujo turbulento. Aplicacion al estudio de la
estructura de la turbulencia y la dispersi´on turbulenta, PhD Thesis UPC , Barcelona (2001).
[5] Castilla R., Redondo J. M., Gamez-Monterol P. J. and Babiano A., Nonlinear Processes Geophys., 14 (2007) 139. |
|
|
|
|
|
|