3-D Numerical Calculation of the Local Entropy Generation Rates in a Radial Compressor Stage

C. IANDOLİ; Enrico SCİUBBA

Makale detayları

3-D Numerical Calculation of the Local Entropy Generation Rates in a Radial Compressor Stage

Yazarlar:

C. IANDOLİ | Enrico SCİUBBA

Yayıncı:

Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi

Dergi:

International Journal of Thermodynamics 2005 Vol.8 Issue 2, pp.83-94

Belge Tipi:

Makale

Yayın Tarihi:

5/2005

Belge Dili:

İngilizce

Document ID (Org No.):

2000477224

Sıklık:

Üç Aylık

eISSN:

2146-1511

pISSN:

1301-9724

Özet:

 

The flow field in a low-ns radial compressor stage is computed by means of a LES simulation performed with a commercial CFD package. Radial and tangential secondary flows are identified both in the rotor and in the diffuser. In the latter, a regime of transient stall with a blockage region oscillating between the two sidewalls is observed. Rotor secondary flows influence the diffuser regime, and some of the diffuser instabilities seem to be phase-locked to some of the unsteady large flow structures detectable in the rotor. The entropy generation rate is computed locally, to assess if and where the design could be improved. Our results confirm that entropy generation maps (both in space and time) provide designers with detailed and unequivocal information about the causes of the intrinsic flow irreversibilities.

Makale detayları

3-D Numerical Calculation of the Local Entropy Generation Rates in a Radial Compressor Stage

Yazarlar: C. IANDOLİ | Enrico SCİUBBA

Yayıncı: Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi

Dergi: International Journal of Thermodynamics 2005 Vol.8 Issue 2, pp.83-94

Belge Tipi: Makale

Yayın Tarihi: 5/2005

Belge Dili: İngilizce

Document ID (Org No.): 2000477224

Sıklık: Üç Aylık

eISSN: 2146-1511

pISSN: 1301-9724

Sayı

Yazarlar:

C. IANDOLİ | Enrico SCİUBBA

Yayıncı:

Uluslararası Uygulamalı Termodinamik Derneği İktisadi İşletmesi

Dergi:

International Journal of Thermodynamics 2005 Vol.8 Issue 2, pp.83-94

Belge Tipi:

Makale

Yayın Tarihi:

5/2005

Belge Dili:

İngilizce

Document ID (Org No.):

2000477224

Sıklık:

Üç Aylık

eISSN:

2146-1511

pISSN:

1301-9724