TY - GEN
T1 - The use of shell elements to capture sail wrinkles, and their influence on aerodynamic loads
AU - Trimarchi, D.
AU - Turnock, S. R.
AU - Taunton, D. J.
AU - Chapelle, D.
PY - 2010/9/28
Y1 - 2010/9/28
N2 - Sails are an example of fluid structure interaction (FS1), where the structural deformation, as well as the fluid dynamics, needs to be taken into account in order to analyse performances. The emphasis of this paper is placed on developing techniques that can study the dynamic behaviour of sails. This is necessary, especially when approaching downwind sails, where the nature of the flow is subjected to large separations and unsteady phenomena such as vortex shedding. Preliminary studies are presented about bluff body type flows, representative of spinnaker flows, and about typical Gennaker sections. From a structural perspective, the fabric is modelled with shells, rather than membranes. This approach shows considerable advantages, since these will capture buckling related phenomena such as wrinkling, which have to be treated with additional models for membrane based analysis. It is found that the unsteadiness and the presence of wrinkles can significantly alter the sail force
AB - Sails are an example of fluid structure interaction (FS1), where the structural deformation, as well as the fluid dynamics, needs to be taken into account in order to analyse performances. The emphasis of this paper is placed on developing techniques that can study the dynamic behaviour of sails. This is necessary, especially when approaching downwind sails, where the nature of the flow is subjected to large separations and unsteady phenomena such as vortex shedding. Preliminary studies are presented about bluff body type flows, representative of spinnaker flows, and about typical Gennaker sections. From a structural perspective, the fabric is modelled with shells, rather than membranes. This approach shows considerable advantages, since these will capture buckling related phenomena such as wrinkling, which have to be treated with additional models for membrane based analysis. It is found that the unsteadiness and the presence of wrinkles can significantly alter the sail force
M3 - Conference contribution
AN - SCOPUS:77956960577
SN - 9781905040728
T3 - RINA - International Conference - Innovation in High Performance Sailing Yachts, Papers
SP - 33
EP - 45
BT - RINA, Royal Institution of Naval Architects - 2nd International Conference on Innovation in High Performance Sailing Yachts, Papers
T2 - 2nd International Conference on Innovation in High Performance Sailing Yachts
Y2 - 30 June 2010 through 1 July 2010
ER -