2nd
WORKSHOP ON
VERIFICATION
AND VALIDATION
OF CFD
FOR
OFFSHORE
FLOWS
This page
contains information about the 2nd Workshop on Verification and
Validation (V&V) of CFD for Offshore Flows, to be held during OMAE 2013.
The first edition of the Workshop was successfully held at OMAE
2012 in Rio de Janeiro. Information about V&V and the goal of these
Workshops can be found here.
For the
present edition of the workshop four exercises (three geometries) that cover
the three activities of V&V are proposed:
I)
Code Verification:
a) 3-D Manufactured Solution of an
unsteady turbulent flow.
II)
Solution Verification:
a) Flow around a smooth fixed cylinder
.
III)
Validation:
a) Flow around a smooth fixed cylinder
.
b) Flow
around a straked-riser.
As for the
first edition, there are no mandatory exercises. However, the goals of the
Workshop remain similar to those of the first edition. The purpose of the Code Verification exercise is to enable the check
of the correctness of the flow solver (the proposed manufactured solution is suitable for URANS
solvers). The goal of the Solution
Verification exercise is
to check the consistency of numerical solutions obtained with different codes,
i.e. to check the overlap of error
bars from different
numerical solutions of the same mathematical model. The Validation exercises intend to assess the modeling error for a classical and a practical test
case.
This means
that we will be dealing with numerical error/uncertainties in all test cases
(and also with experimental uncertainties in the Validation cases). Therefore,
all submissions to the Workshop must provide the numerical uncertainty with a
description of the procedure used to obtain it. Alternatively, participants may
submit results (with negligible contributions of round-off and iterative
errors) for at least 3 different grids and 3 different time steps with a
minimum of 6 data points (of the possible 9). Naturally, solutions provided in a single grid with a single time step
are useless for the present exercise.
The participation in
the Workshop includes three different contributions:
1) The reply to a questionnaire.
2) Submission of data sheets including the
requested flow quantities.
3) A formal paper or a technical presentation
to be presented at the V&V Workshop sessions.
Papers
must be submitted in the standard framework of the OMAE 2013 Conference. Participants
that chose technical presentation must submit an abstract (respecting the
deadlines of the OMAE 2013 Conference) with the indication of the test case(s)
they are performing. The questionnaire and the data sheets can be found in the
links (above) to the pages with detailed information about each of the proposed
test cases. Data sheets and the
questionnaire for the comparisons to be presented at the Workshop can be sent
to eca@marine.ist.utl.pt until the end of April 2013.
A related
Workshop organized by the ITTC will be held in October in Nantes. The
Validation exercise for the flow around a smooth fixed cylinder is also
included in the test cases of this Workshop. Information is available at ITTC Workshop on Wave Run-up and Vortex Shedding.