Taqia, Fanisa Zidna (2017) Analisis Profil Wake Turbin Hidrokinetik Tipe Darrieus Straight Blade Cascade pada Kanal Menggunakan CFD. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dilakukan simulasi menggunakan CFD pada turbin Vertikal Axis tipe Darrieus Straight Blade Cascade pada azimuth 0°, 30°, 60°, dan 90° untuk dilakukan pengamatan terhadap profil wake dan blockage effect. Wake merupakan salah satu parameter penting yang perlu dianalisis ketika mendesain suatu array turbin. Analisa profil wake di belakang turbin dan blockage effect dilakukan untuk melihat pengaruhnya terhadap performansi turbin yang diletakkan dalam suatu kanal. Terdapat tiga jenis variasi turbin yang disimulasikan, yaitu turbin dengan diameter 40 cm, 60 cm dan 80 cm kecepatan arus air 1,1 m/s; 1,2 m/s; dan 1,3 m/s. Besarnya gaya dan torsi yang dihasilkan oleh turbin meningkat seiring dengan peningkatan kecepatan arus laut. Sehingga torsi paling besar yang dapat dihasilkan oleh turbin dengan diameter 80 cm pada kecepatan 1,3 m/s. Dari hasil simulasi dapat diketahui bahwa wake terpanjang untuk stand alone turbin adalah 5D pada masing – masing diameter turbin. Hasil simulasi menunjukkan bahwa semakin besar kecepatan inlet maka wake yang dihasilkan akan semakin pendek akibat wake recovery yang semakin cepat.
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Simulations were performed using CFDs on the Aricis Vertical turbine type Darrieus Straight Blade Cascade at azimuth 0 °, 30 °, 60 °, and 90 ° for observation of wake and blockage effect profiles. Wake is one of the important parameters that need to be analyzed when designing an array of turbines. Analyzing the wake profile behind the turbine and blockage effect is done to see the effect on the turbine performance placed in a channel. There are three types of turbine variations simulated, ie turbines with diameters of 40 cm, 60 cm and 80 cm velocity of 1.1 m / s; 1.2 m / s; And 1.3 m / s. The magnitude of the force and torque generated by the turbine increases along with the increase in ocean velocity. So that the largest torque that can be produced by a turbine with a diameter of 80 cm at a speed of 1.3 m / s. From the simulation results it can be seen that the longest wake for stand alone turbine is 5D in each turbine diameter. Simulation results show that the greater the inlet speed, the wake produced will be shorter due to the faster wake recovery.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Wake, Straight Blade Darrieus, Koefisien Performansi |
| Subjects: | T Technology > TC Hydraulic engineering. Ocean engineering |
| Divisions: | Faculty of Industrial Technology > Physics Engineering > 30201-(S1) Undergraduate Thesis |
| Depositing User: | Fanisa Zidna Taqia |
| Date Deposited: | 13 Oct 2017 06:28 |
| Last Modified: | 06 Mar 2019 06:24 |
| URI: | http://repository.its.ac.id/id/eprint/46822 |
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