As part of the Water Waves in Industry event, Mark Leybourne represented the OWEL wave energy convertor, originally designed by Prof John Kemp, and now in development at Offshore Wave Energy Ltd, a subsidiary of IT Power Ltd. He was unable to attend due to business constraints, but his slides were contributed and are linked here. The CFD modelling, using ANSYS CFX, has been a key part of the 5 stages of device development (a) proof of concept (scale 1:25 to 1:100), (b) design model for tank experiments (scale 1:10 to 1:25), (c) sub-systems model for site testing (scale 1:2 to 1:10), (d) single unit proving at sea (scale 1:1 to 1:4), and (e) multi-device array at sea (scale 1:1). Numerical modelling has been used throughout, and compared with physical experiments at Southampton, Plymouth and HMRC Ireland. OWEL has recently formed a collaboration with the University of Surrey on a project to introduce new dimensions to the OWEL modelling: a shallow water two-fluid model for the interior flow, dynamic coupling to 3D rotations, identifying the range of resonances. A link to the OWEL-Surrey project is here.