Changeset 5319
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 May 14, 2008, 11:41:16 AM (16 years ago)
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anuga_work/publications/anuga_2007/anuga_validation.tex
r5318 r5319 638 638 \subsection{Runup of solitary wave on circular island wavetank validation} 639 639 640 This section will describe the ANUGA results for the experiments conducted 641 by Briggs et al (1995). Here, a 30x25m basin with a conical island is situated near 642 the centre and a directional wavemaker is used to produce planar solitary waves of 643 specified crest lenghts and heights. A series of gauges were distributed within the 644 experimental setup. As described by Hubbard and Dodd \cite{Hubbard02}, a number of researchers 645 have used this benchmark problem to test their numerical models. {\bf Jane: check 646 whether these results are now avilable as they were not in 2002}. Hubbard and Dodd 647 \cite{Hubbard02} note that 648 a particular 3D model appears to obtain slightly better results than the 2D ones reported 649 but that 3D models are unlikely to be competitive in terms of computing power for 650 applications in coastal engineering at least. Choi et al \cite{Choi07) use a 3D RANS model 651 (based on the NavierStokes equations) 652 for the same problem and find a very good comparison with laboratory and 2D numerical 653 results. An obvious advantage of the 3D model is its ability to investigate the 654 velocity field and Choi et al also report on the limitation of depthaveraged 640 This section will describe the ANUGA results for the experiments 641 conducted by Briggs et al (1995). Here, a 30x25m basin with a conical 642 island is situated near the centre and a directional wavemaker is used 643 to produce planar solitary waves of specified crest lenghts and 644 heights. A series of gauges were distributed within the experimental 645 setup. As described by Hubbard and Dodd \cite{Hubbard02}, a number of 646 researchers have used this benchmark problem to test their numerical 647 models. {\bf Jane: check whether these results are now avilable as 648 they were not in 2002}. Hubbard and Dodd \cite{Hubbard02} note that a 649 particular 3D model appears to obtain slightly better results than the 650 2D ones reported but that 3D models are unlikely to be competitive in 651 terms of computing power for applications in coastal engineering at 652 least. Choi et al \cite{Choi07} use a 3D RANS model (based on the 653 NavierStokes equations) for the same problem and find a very good 654 comparison with laboratory and 2D numerical results. An obvious 655 advantage of the 3D model is its ability to investigate the velocity 656 field and Choi et al also report on the limitation of depthaveraged 655 657 2D models for runup simulations of this type. 656 658
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