Investigation of deflector geometry and turbine aspect ratio effect on 3D modified in-pipe hydro Savonius turbine: Parametric study

Payambarpour, S. Abdolkarim; Najafi, Atabak; Magagnato, Franco

doi:10.1016/j.renene.2019.12.002

Cited by 50 publications

(8 citation statements)

References 39 publications

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“…Performa turbin dipengaruhi oleh beberapa faktor, salah satunya factor geometri pada rotor/runner turbin. Factor geometri yang dimaksud adalah overlap ratio [9], Aspek Rasio [10], bentuk sudu [11], jumlah stage [12], dan jumlah sudu [13].…”

Section: Pendahuluanunclassified

Analisa Performa Hidro-Turbin Cross-Flow Dengan Sudut Diameter Runner 10° Dan Jumlah Sudu 8, 16, Dan 24 Menggunakan Metode CFD

Asad

Febrianto

Prabowoputra

2021

j. of. mechanical. engineering

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Hidro turbin adalah salah satu komponen utama pada pembangkit listrik tenaga air. Penelitian terhadap turbin air memiliki peran penting dalam pengembangan renewable energy yang bersumber dari tenaga hidro. Dimana Indonesia memiliki potensi sumber energi hidro yang sangat besar. Hidro-turbin memiliki beberapa jenis yaitu turbin Sumbu Horizontal, Turbin Sumbu vertical dan turbin Cross-Flow. Penelitian ini dilakukan pada turbin air tipe Cross-Flow, dan dilakukan dengan metode Computational Fluid Dynamics (CFD). Simulasi dilakukan secara tiga dimensi dan menggunakan perangkat lunak Ansys Student 2021 dengan solver CFX. Turbin cross-flow menggunakan runner dengan sudut 10°, dengan variasi jumlah sudu 8, 16, dan 24. Penelitian ini bertujuan untuk mengetahui performa turbin Cross-flow dan mengetahui pengaruh jumlah sudu pada performa tersebut. Turbin Cross-flow beroperasi pada kecepatan fluida 3m/s dan angular velocity 50-250 rpm. Simulasi menggunakan tipe turbulensi Shear Stress Transport dalam kondisi tunak, Hasil menunjukan turbin cross-flow dengan sudut runner 10o dan jumlah sudu 24 memiliki performa terbaik bila dibandingkan dengan jumlah sudu 8 dan 16.

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Section: Pendahuluanunclassified

Analisa Performa Hidro-Turbin Cross-Flow Dengan Sudut Diameter Runner 10° Dan Jumlah Sudu 8, 16, Dan 24 Menggunakan Metode CFD

Asad

Febrianto

Prabowoputra

2021

j. of. mechanical. engineering

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“…In addition, they noted that the twist angle and the Reynolds number had an effect on the performance of the Savonius water rotor. Payambarpour et al, [9] investigated numerically a twobladed Savonius water rotor with a deflector mounted upstream the flow. The impact of modifying the proposed deflector and the rotor geometrical parameters on the output torque and rotor efficiency as well as the flow rate was described across pressure contours and 3D streamlines.…”

Section: Introductionmentioning

confidence: 99%

Effect of the Turbulence Model on the Computational Results of a Lucid Spherical Rotor

Mabrouk Mosbahi,

Mariem Lajnef,

Mouna Derbel

et al. 2024

ARFMTS

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Due to the excessive increase in the energy demand, renewable energy has become an alternative for electricity production for industrial and domestic needs. Water energy has received significant investment as a sustainable and clean energy source. Lucid spherical rotors, a kind of hydro-power converter, are cross flow rotors designed to be mounted within a pipeline in order to gather excess energy available in gravity-fed water pipelines. This paper focuses on the effect of the numerical model parameters choice, namely the turbulence model, on the Lucid spherical rotor hydrodynamic characteristics. Numerical simulations were carried out through Ansys Fluent software 17.0 using the unsteady Reynolds-Averaged Navier-Stokes (URANS) equations. Four turbulence models: RNG k-ε, Realizable k-ε, SST k-ω and transition SST were tested. Performance characteristics in terms of torque and power coefficients in addition to hydrodynamic features of the flow around the considered rotor were analyzed. The adopted numerical model was validated based on previous experimental findings from the literature. It was found that the realizable k-ε model showed a good agreement with experimental results. Thus, it was adopted for the Lucid spherical rotor simulation. The obtained findings could provide further direction for researchers to use the Lucid spherical water turbine.

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“…Similarly, a numerical and experimental study on the same turbine showed the effects of the clearance, flow rate variation, head loss, and performance, where it was concluded that the optimal performance was obtained at a rotational speed of 50 / and with a 4 mm clearance, generating 55 and 20 of pressure drop [29]. Lastly, an analytical, numerical, and experimental study was developed on the drag-type modified Savonius turbines, where a parametric study was realized determining the optimal geometric dimensions of the turbine and the deflector, which guides the flow for the increase of turbine efficiency [30].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of a Propeller-Type Turbine for In-Pipe Installation

Monsalve-Cifuentes

Graciano-Uribe

Zuluaga

2021

ARFMTS

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In this work, a 76 mm diameter propeller-type turbine is numerically investigated using a parametric study and computational fluid dynamics. The three-dimensional model of the turbine is modeled using data available in the bibliography. A mesh independence study is carried out utilizing a tetrahedron-based mesh with inflation layers around the turbine blade and the pipe wall. The best efficiency point is determined by the maximum hydraulic efficiency of 64.46 %, at a flow rate of 9.72x10-3 m3/s , a head drop of 1.76 m, and a mechanical power of 107.83 W. Additionally, the dimensionless distance y+, pressure, and velocity contours are shown.

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Investigation of deflector geometry and turbine aspect ratio effect on 3D modified in-pipe hydro Savonius turbine: Parametric study

Cited by 50 publications

References 39 publications

Analisa Performa Hidro-Turbin Cross-Flow Dengan Sudut Diameter Runner 10° Dan Jumlah Sudu 8, 16, Dan 24 Menggunakan Metode CFD

Analisa Performa Hidro-Turbin Cross-Flow Dengan Sudut Diameter Runner 10° Dan Jumlah Sudu 8, 16, Dan 24 Menggunakan Metode CFD

Effect of the Turbulence Model on the Computational Results of a Lucid Spherical Rotor

Numerical Simulation of a Propeller-Type Turbine for In-Pipe Installation

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