Abstract
Pre-swirl stator concept is proposed in this paper to improve the overall efficiency of Horizontal Axis Tidal Turbine (HATT). Numerical simulation of HATT with and without pre-swirl stator concept is conducted in different Tip Speed Ratio (TSR). A three bladed tidal turbine is numerically modelled and solved by a three-dimensional finite volume solver. Turbine model is studied using a timeaccurate Reynolds-Averaged Navier-Stokes (RANS). The transient rotor-stator model with sliding mesh technique is used. The power coefficients of a HATT without pre-swirl stator are predicted numerically and validated by existing experimental data. It has been found that the use of pre-swirl stator can improve the velocity field around the turbine leading to an increase of the overall turbine efficiency by about 13% in specific TSR.
Original language | English |
---|---|
Title of host publication | 15th International Congress of the International Maritime Association of the Mediterranean: IMAM 2013 |
Editors | Guedes Soares, López Peña |
Pages | 863-869 |
Number of pages | 6 |
Publication status | Published - 14 Oct 2013 |
Event | 15th International Congress of the International Maritime Association of the Mediterranean, IMAM 2013 - A Coruna, Spain Duration: 14 Oct 2013 → 17 Oct 2013 |
Conference
Conference | 15th International Congress of the International Maritime Association of the Mediterranean, IMAM 2013 |
---|---|
Country/Territory | Spain |
City | A Coruna |
Period | 14/10/13 → 17/10/13 |
Keywords
- horizontal axis tidal turbine (HATT)
- numerical simulation
- reynolds-averaged Navier-Stokes (RANS)
- three bladed tidal turbine
- three-dimensional finite volume solver
- tidal turbine