Performance improvement of a new proposed Savonius hydrokinetic turbine: a numerical investigation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F20%3A00007894" target="_blank" >RIV/46747885:24210/20:00007894 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/46747885:24620/20:00007894

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2352484720314335?via=ihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352484720314335?via=ihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.egyr.2020.10.072" target="_blank" >10.1016/j.egyr.2020.10.072</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Performance improvement of a new proposed Savonius hydrokinetic turbine: a numerical investigation

Popis výsledku v původním jazyce

Computational fluid dynamic analysis was conducted with a new proposed Savonius hydrokinetic turbine with a parabolic blade shape specifically geared toward a small-scale power extraction. This parabolic blade geometry was developed by manipulating a couple of disparate kinds of blades in the recent past i.e. semicircular and arc shaped followed by a straight arc. The developed hydrokinetic turbine was tested numerically in a symmetric channel and its performance was evaluated concerning the power, thrust and torque coefficients. Simulations were also implemented with two other mentioned blades. The effects of Reynolds number at different tip speed ratios on the dynamic and static performance of all three models were discussed as well. The present investigation demonstrated a gain of 7.7% and 12% in maximum power coefficient with the new proposed Savonius hydrokinetic turbine by parabolic blade shape than that of the arc shaped followed by a straight arc and semicircular, respectively. Likewise, for this new proposed turbine, the maximum value of static torque coefficient improved by 4% and 25.8% than that of the arc shaped followed by a straight arc and semicircular, severally. For all three simulated blade profiles, the best performance was experienced at an optimum value of tip speed ratio 0.98 and Reynolds number 2 × 105. However, the new proposed turbine at all Reynolds numbers and tip speed ratios in the scope of this research showed a better performance than the other simulated models.

Název v anglickém jazyce

Performance improvement of a new proposed Savonius hydrokinetic turbine: a numerical investigation

Popis výsledku anglicky

Computational fluid dynamic analysis was conducted with a new proposed Savonius hydrokinetic turbine with a parabolic blade shape specifically geared toward a small-scale power extraction. This parabolic blade geometry was developed by manipulating a couple of disparate kinds of blades in the recent past i.e. semicircular and arc shaped followed by a straight arc. The developed hydrokinetic turbine was tested numerically in a symmetric channel and its performance was evaluated concerning the power, thrust and torque coefficients. Simulations were also implemented with two other mentioned blades. The effects of Reynolds number at different tip speed ratios on the dynamic and static performance of all three models were discussed as well. The present investigation demonstrated a gain of 7.7% and 12% in maximum power coefficient with the new proposed Savonius hydrokinetic turbine by parabolic blade shape than that of the arc shaped followed by a straight arc and semicircular, respectively. Likewise, for this new proposed turbine, the maximum value of static torque coefficient improved by 4% and 25.8% than that of the arc shaped followed by a straight arc and semicircular, severally. For all three simulated blade profiles, the best performance was experienced at an optimum value of tip speed ratio 0.98 and Reynolds number 2 × 105. However, the new proposed turbine at all Reynolds numbers and tip speed ratios in the scope of this research showed a better performance than the other simulated models.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20704 - Energy and fuels

Projekt

<a href="/cs/project/EF16_025%2F0007293" target="_blank" >EF16_025/0007293: Modulární platforma pro autonomní podvozky specializovaných elektrovozidel pro dopravu nákladu a zařízení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Energy Reports

ISSN

2352-4847

e-ISSN

—

Svazek periodika

6

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

16

Strana od-do

3051-3066

Kód UT WoS článku

000602717100009

EID výsledku v databázi Scopus

2-s2.0-85095683324