Influence of Number and Thickness of Blades on the Performance of Centrifugal Fans

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24210%2F20%3A00008182" target="_blank" >RIV/46747885:24210/20:00008182 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2020/100.pdf" target="_blank" >https://www.daaam.info/Downloads/Pdfs/proceedings/proceedings_2020/100.pdf</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.2507/31st.daaam.proceedings.100" target="_blank" >10.2507/31st.daaam.proceedings.100</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Number and Thickness of Blades on the Performance of Centrifugal Fans

Popis výsledku v původním jazyce

The article deals with the research of the influence of the number of blades on the performance curve of small high-pressure centrifugal fans. The classical Euler equation for fans predicts that as the number of blades increases, the so-called loss due to inter-blade circulation will decrease. However, this is in direct contrast to experiments performed on a series of small fan wheels with backward curved blades, as the performance of the fans is only negligibly affected by the number of blades. The analysis performed in the article shows that the circulation between the blades does not cause a loss in terms of energy dissipation, but a change in the velocity diagram. A modified Euler equation is presented, which includes not only the effect of the number of blades, but also the effect of non-zero blade thickness. It is explained how the additional blades adversely affect the resulting fan characteristic. The resulting analytical model shows better agreement with the results of experiments and numerical calculations.

Název v anglickém jazyce

Influence of Number and Thickness of Blades on the Performance of Centrifugal Fans

Popis výsledku anglicky

The article deals with the research of the influence of the number of blades on the performance curve of small high-pressure centrifugal fans. The classical Euler equation for fans predicts that as the number of blades increases, the so-called loss due to inter-blade circulation will decrease. However, this is in direct contrast to experiments performed on a series of small fan wheels with backward curved blades, as the performance of the fans is only negligibly affected by the number of blades. The analysis performed in the article shows that the circulation between the blades does not cause a loss in terms of energy dissipation, but a change in the velocity diagram. A modified Euler equation is presented, which includes not only the effect of the number of blades, but also the effect of non-zero blade thickness. It is explained how the additional blades adversely affect the resulting fan characteristic. The resulting analytical model shows better agreement with the results of experiments and numerical calculations.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/VI20172020052" target="_blank" >VI20172020052: Aplikovaný výzkum v oblasti osobních ochranných prostředků nové generace pro potřeby IZS</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 statě ve sborníku

Annals of DAAAM and Proceedings of the International DAAAM Symposium

ISBN

—

ISSN

1726-9679

e-ISSN

—

Počet stran výsledku

4

Strana od-do

724-727

Název nakladatele

DAAAM International Vienna

Místo vydání

—

Místo konání akce

Mostar; Bosnia and Herzegovina

Datum konání akce

1. 1. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

—