Optimization Study on the Blade Profiles of A Horizontal Axis Tidal Turbine Based on BEM-CFD Model

Zhang, Dahai; Liu, Ding; Huang, Bin; Chen, Xue-meng; Liu, Jintao

doi:10.1007/s13344-019-0041-5

Cited by 13 publications

(7 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This work adopted the turbine design of previous work by shrouded horizontal axis tidal turbine by Sun and Kyozuka [2], Nagataki et al, [4], and Kyozuka et al, [5]. Yet, for the modelling, the steady state and the k-ε model were applied, which refers to control equations by Zhang et al, [6] and Huang et al, [7]. Zhang et al, [6] have proven that this CFD model was in agreement with an experiment conducted by Bahaj et al, [8] and Batten et al, [9].…”

Section: Methodsmentioning

confidence: 99%

“…Yet, for the modelling, the steady state and the k-ε model were applied, which refers to control equations by Zhang et al, [6] and Huang et al, [7]. Zhang et al, [6] have proven that this CFD model was in agreement with an experiment conducted by Bahaj et al, [8] and Batten et al, [9]. The CFD model is based on Reynolds Averaged Navier-Stokes (RANS) to the computational method for analysing the turbine system in detail.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

A Study on Diffuser Augmentation of a Tidal Turbine

Ambarita

Harinaldi

Nasruddin

et al. 2021

ARFMTS

View full text Add to dashboard Cite

As tidal energy is progressively earning attention worldwide, there is a lot of existing research about the tidal current potency and the tidal turbine design. Especially on turbine design, existing studies deduced that a diffuser augmentation is a superior choice to increase the turbine performance. However, the research in finding the best diffuser angle whose efficiency is maximum, yet minim cavity risk is still limited. Therefore, this study proposes an innovative, optimized design method on diffuser augmentation of a tidal turbine by comparing four diffuser angles in three inflow velocity circumstances. In particular, three airfoil blades design with a rotor diameter of 0.3 m was developed. The combination of computational fluid dynamic and multi-objective optimization using a general algorithm coupled with the artificial neural network was applied by considering the turbine’s power coefficient and cavitation inception as a trade-off objective. The numerical results display that the different inflow velocity affects the turbine performance insignificantly. The optimization analysis and comparison among four diffuser angles in three variations of inflow velocity show that the tidal turbine's optimal design with diffuser augmentation could be applied to all tidal current speed.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

A Study on Diffuser Augmentation of a Tidal Turbine

Ambarita

Harinaldi

Nasruddin

et al. 2021

ARFMTS

View full text Add to dashboard Cite

show abstract

“…Mesimulasikan rotor turbin dengan DMS 5. Mesimulasikan produksi daya turbin Secara detail, teori ini menggabungkan antara teori momentum dengan teori elemen bilah blade element theory (BET) (Zhang et al, 2019). Pada teori momentum, kecepatan angin relatif dapat dihitung sehingga memungkinkan perhitungan angle of attack (AoA), koefisien lift, dan koefisien drag dari suatu profil sehingga dapat diperoleh gaya dorong dan torsi dari sebuah elemen.…”

Section: Pendahuluanunclassified

Analisis Turbin Darrieus Tipe V-Shaped Blade Untuk Aplikasi Konverter Energi Arus Laut Menggunakan Software QBlade

Ariefianto

Hasanah

Wijono

2022

Jurnal Kelautan Nasional

View full text Add to dashboard Cite

Turbin tipe Darrieus merupakan salah satu jenis turbin sumbu vertikal yang memiliki prospek menjanjikan dalam pengembangan turbin hidrokinetik, salah satunya dalam aplikasi untuk pembangkit arus laut. Berbagai penelitian telah dilakukan untuk meningkatkan performa turbin Darrieus yang pada umumnya memiliki performa efisiensi dan self-starting lebih rendah dibandingkan jenis turbin sumbu horisontal. Tujuan penelitian ini adalah untuk mengevaluasi performa turbin Darrieus yang ditinjau dari aspek efisiensi dan kemampuan self-starting. Skenario pengujian berupa penerapan bentuk foil dan blade swept angle (γ) pada desain turbin dipertimbangkan dalam penelitian ini. Pada evaluasi pengaruh bentuk foil, diterapkan foil NACA 634021 sebagai foil utama kemudian dibandingkan dengan foil lain seperti NACA 0018. Sedangkan evaluasi pengaruh blade swept angle, dipertimbangkan nilai γ = 30° agar menghasilkan turbin dengan bentuk V-shaped blade yang kemudian dibandingkan dengan turbin Straight blade dengan γ = 0°. Software QBlade digunakan untuk mensimulasikan turbin V-shaped blade selama kondisi kerja. Hasil simulasi menunjukkan bahwa turbin V-shaped blade yang berbasis foil NACA 634021 mampu mencapai efisiensi terbesar yaitu 0,425 dan memiliki self-starting yang baik pada cut-in speed arus laut sebesar 1,765 m/s. Selain itu, turbin ini juga mampu menghasilkan daya sebesar 27,64 kW pada kecepatan ratingnya dengan rata-rata peningkatan daya tiap 1 m/s arus laut sebesar 2,51 kW.

show abstract

“…'modern' and 'veteran' design methods. Typical 'modern' optimisation methods include multi-objective surrogate models (Zhu et al 2020), genetic (Zhang et al 2019), decision model (Encarnacion et al 2019), and AI algorithms, while 'veteran' optimisation methods refer to approaches derived from the blade element momentum theory, such as Burton's model (Erich 2000), and Rosen's model (Rosen 1987). Zhu et al (2020) optimized the chord length distribution using the response surface and weighted average surrogate models, then the power coefficient of the optimal model improved 2%.…”

Section: Introductionmentioning

confidence: 99%

“…The optimized rotor had two blades and pitch angle of 19.5, and its maximum power coefficient increased 26.5% compared to the base rotor from Bahaj et al (2007). Zhang et al (2019) pursued a blade profile optimization based on the response surface method coupled with the non-dominated sorting genetic algorithm (NSGA-II), and the numerical simulation was implemented by the BEM-CFD method. The pitch angle and chord length were chosen as the design variables; the mean and variance of power coefficients were selected as the objective functions.…”

Section: Introductionmentioning

confidence: 99%

Numerical Study of A Generic Tidal Turbine Using BEM Optimization Methods

Wang

et al. 2021

China Ocean Eng

View full text Add to dashboard Cite

Three blade-geometry optimisation models derived along with assumptions from the blade element momentum (BEM) approach are studied using a steady BEM code to improve a small horizontal-axis rotor of three blades that has been previously used in experiments. The base rotor blade has linear-radially varying chord length and pitch angle, while the other three models noted as Burton, Implicit and Hansen due to their references and characteristics yield blades of non-linearly varying chord length and pitch angle. The aim is to compare these rapid models and study how assumptions embedded in them affect performance and inductionfactors. It is found that the model that has the least assumptions (Hansen) and which considers the blade-profile drag in its optimisation procedure yields the highest power coefficient, CP, at optimal tip speed ratio (TSR), about 7% higher than the base one and also higher CP at high TSR. It produces an axial induction factor distribution along the blade that is closest to the 1D optimal value of 1/3. All optimised tangential induction-factor distributions along the blade closely vary as inverse to the square of the radial distance, while being mildly higher than the base distribution. It shows that sufficient swirl is necessary to increase power but at a level causing not too much energy loss in unnecessary swirl of the wake. At high TSR, all optimised rotors adversely produce higher thrust than the base one, but the one with most embedded assumptions (Burton) produces the highest thrust. Details of all three optimisation models are given along with the distributions of the power, thrust, blade hydrodynamic efficiency and induction factors.

show abstract

Optimization Study on the Blade Profiles of A Horizontal Axis Tidal Turbine Based on BEM-CFD Model

Cited by 13 publications

References 28 publications

A Study on Diffuser Augmentation of a Tidal Turbine

A Study on Diffuser Augmentation of a Tidal Turbine

Analisis Turbin Darrieus Tipe V-Shaped Blade Untuk Aplikasi Konverter Energi Arus Laut Menggunakan Software QBlade

Numerical Study of A Generic Tidal Turbine Using BEM Optimization Methods

Contact Info

Product

Resources

About