Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates

المؤلفون المشاركون

Corsini, Alessandro
Bianchi, S.
Sheard, Anthony G.

المصدر

ISRN Mechanical Engineering

العدد

المجلد 2012، العدد 2012 (31 ديسمبر/كانون الأول 2012)، ص ص. 1-9، 9ص.

الناشر

Hindawi Publishing Corporation

تاريخ النشر

2012-05-15

دولة النشر

مصر

عدد الصفحات

9

التخصصات الرئيسية

هندسة ميكانيكية

الملخص EN

The authors investigate the far-field noise emissions of a datum fan blade fitted with tip end-plate geometries, originally designed to control the leakage vortex swirl level.

The end-plate geometries influence the tip-leakage flow, vortex formation, and swirl level.

In doing so, the end-plate geometries influence the sound-power levels.

After an evaluation of fan rotors' aerodynamic performance, the study compares the rotors' far-field noise signature characterised in terms of sound-power and pressure-level spectra to enable and assess the end-plate acoustic pay-off.

The investigation attempts to establish a cause-and-effect relationship between the tip-flow dynamics and the radiated sound fields, exploring the diverse directivity patterns.

The authors found a tonal reduction, due to the enhanced blade-tip end-plates and clarified the relevance of the tip features influencing the radial distribution of the noise sources using coherence analysis.

The modified multiple-vortex breakdown end-plate design was effective in reducing the broadband noise, giving an improvement in the frequency range of the turbulent noise.

نمط استشهاد جمعية علماء النفس الأمريكية (APA)

Bianchi, S.& Corsini, Alessandro& Sheard, Anthony G.. 2012. Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates. ISRN Mechanical Engineering،Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-454915

نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)

Bianchi, S.…[et al.]. Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates. ISRN Mechanical Engineering No. 2012 (2012), pp.1-9.
https://search.emarefa.net/detail/BIM-454915

نمط استشهاد الجمعية الطبية الأمريكية (AMA)

Bianchi, S.& Corsini, Alessandro& Sheard, Anthony G.. Experimental Characterisation of the Far-Field Noise in Axial Fans Fitted with Shaped Tip End-Plates. ISRN Mechanical Engineering. 2012. Vol. 2012, no. 2012, pp.1-9.
https://search.emarefa.net/detail/BIM-454915

نوع البيانات

مقالات

لغة النص

الإنجليزية

الملاحظات

Includes bibliographical references

رقم السجل

BIM-454915