Kebutuhan energi semakin meningkat seiring dengan peningkatan jumlah penduduk, sedang di sisi lain ketersediaan sumber energi khususnya energi fosil semakin berkurang sehingga pencarian sumber-sumber energi lain yang lebih ramah lingkungan dan terbarukan harus dilakukan. Salah satu sumber energi terbarukan adalah energi air baik skala besar, menengah maupun skala kecil. Turbin Gorlov Flutter sebagai salah satu turbin konversi energi air dapat diaplikasikan pada aliran air dengan memanfaatkan energi arus aliran air. Energi arus aliran air yang mengenai turbin Gorlov Flutter dapat menyebabkan turbin berputar berdasarkan prinsip hidrodinamika berupa resultan gaya lift dan gaya drag pada profil blade yang menggunakan profil airfoil NACA 0020, sehingga dengan putaran turbin menghasilkan torsi yang dapat dikonversi sebagai daya listrik. Dimensi turbin yang diuji yaitu: tinggi 0,37 m, diameter 0,46 m, jumlah blade 3 buah dengan 3 buah flutter, panjang chord (0,074 m) dan solidity 0,307. Hasil pengujian diperoleh karakteristik turbin Gorlov Flutter dengan efisiensi η 36 % dan TSR (χ) 2,08 serta nilai cut in speed 0,415 m/s. Kecepatan spesifik turbin (Ns) model turbin Gorlov Flutter belum dapat ditentukan karena efisiensi kerja turbin gorlov flutter selama pengujian tidak maksimum sehingga penggolongan turbin tidak dapat ditentukan dan efisiensi yang dicapai dalam pengujian turbin gorlov flutter 36,5 %. Hasil scale up yang dilakukan bahwa dengan faktor skala 6, Dm = 0,46 m, ωm = 77,24 rpm, Pm = 11.9459 watt dan asumsi ωp = 300 rpm, maka akan didapatkan besaran daya Pp = 1.585.40 watt atau Pp = 1.59 kw. Hasil analisis sistem pemanfaatan saluran pembuangan di Pertamina RU IV Cilacap adalah 1 paralel turbin terdiri atas 20 turbin gorlov flutter menghasilkan power turbin 3,337 kw, jarak antar paralel yang dipakai adalah 5 meter sehingga konfigurasi yang terlihat menghasilkan power turbin sebesar : 8 paralel x 3,37 kw = 26,96 kw. Pemanfaatan power turbin digunakan untuk penerangan jalan di daerah basin = 15 Kw dan sentral produksi perikanan bagi masyarakat sekitar pabrik = 11,96 kw.

Energy requirement has increased along with increases in population, while on the other hand the availability of energy resources, especially fossil energy decreases so that the search of other energy sources are more environmentally friendly and renewable must be done. One source of renewable energy is the energy of water either large-scale, medium and small scale. Flutter Gorlov turbine as one of the water turbine energy conversion can be applied to the flow of water by utilizing the energy from water flow. Energy flow of the turbine Gorlov Flutter can cause the turbine rotates based on the principles of hydrodynamics in the form of resultant lift force and drag force on the blade profile that uses a NACA 0020 airfoil profile, so that the turbine rotation produces a torque that can be converted as electric power. Dimensions turbines tested are: high (H) 0.37 m, 0.46 m diameter, blade number 3 (three) pieces with 3 pieces of Flutter, chord length (0.074 m) and 0.307 solidity. The test results obtained Flutter Gorlov turbine characteristics as turbine flow with a energy from water flow conversion efficiency (η) of 36% and TSR (χ) 2.08 and the value of the cut in speed of 0.415 m / s. Turbine specific speed (Ns) Flutter Gorlov turbine model can not be determined because the turbine work efficiency gorlov flutter during the test has not reached its maximum so that the classification of the turbine into turbine group also can not be determined and the efficiency that can be achieved during the test turbine flutter gorlov 36.5%. The result of scale up that has been done, for six times scale factor, Dm = 0,46 m, ωm = 77,24 rpm, Pm = 11,9459 Watt with assumption ωp = 300 rpm, and then power output is Pp = 1.585,40 Watt or Pp = 1,59 kW. Result analysis of the utilization of the sewer system at Pertamina Cilacap RU IV is one parallel turbines consisting of 20 turbines to produce power turbine flutter gorlov 3,337 kw, the distance between the parallel that is used is 5 meters, so the configurations that produce power turbines look at: 8 parallel x 3,37 kw = 26,96 kw. Utilization of power turbines is used for street lighting in the area of the basin = 15 Kw and central fisheries production for the community around the factory = 11,96 kw.

Kata Kunci : Turbin gorlov flutter,Energi arus aliran,Tip speed ratio,Efisiensi,Analisis sistem