A study on the use of brim on a tidal turbine with diffuser augmentation

Andika Ikhsan Kamil, Harinaldi, Ridho Irwansyah

Research output: Contribution to journalConference articlepeer-review


Tidal turbine is a horizontal axis turbine utilizing tidal energy to generate electricity while several existing studies related to the tidal turbine have been carried out, especially on the tidal turbine design to increase the turbine performance. The tidal turbine design is improved in various methods, namely augmenting a diffuser, modifying the diffuser angle, and appending a brim at the end of the diffuser as used in wind turbines with the aim of keeping vortex away from the tidal turbine outlet to minimize pressure drop. This study aims to compare the use of the brim by observing the level of effectiveness and the efficiency of the output power. The comparison is made by modeling the tidal turbine at four diffuser angles and the use of brim. The four diffuser angles were varied started from 10.43° to 35.97° with tidal current velocity around 0.7 m/s. The model is then analyzed by applying the computational fluid dynamics approach utilizing ANSYS application. It is then expected to obtain higher level of effectiveness and power efficiency of the tidal turbine by introducing the brim combined with diffuser augmentation.

Original languageEnglish
Article number020004
JournalAIP Conference Proceedings
Issue number1
Publication statusPublished - 20 Jul 2023
Event12th International Meeting on Advances in Thermofluids, IMAT 2021 - Johor Bahru, Malaysia
Duration: 1 Nov 2021 → …


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