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Wyszukujesz frazę "Wu, K-Q." wg kryterium: Autor


Wyświetlanie 1-2 z 2
Tytuł:
Leading edge skewed-swept diagonal compressor rotor and numerical analysis on its internal flow mechanism
Autorzy:
Zhou, B.
You, B.
Wu, W.
Wu, K-Q.
Powiązania:
https://bibliotekanauki.pl/articles/1943229.pdf
Data publikacji:
2009
Wydawca:
Politechnika Gdańska
Tematy:
skewed-swept diagonal compressor
vaneless diffuser
performance test
Opis:
The structure of each part of a diagonal compressor directly affects its overall performance and internal flow. We introduce the Reynolds-averaged Navier-Stokes flow simulation for unit calculation on the whole system including a diagonal impeller, a vaneless diffuser and a volute. By analyzing different flow chromatograms of specific sections, we can compare the configuration of three types of diffusers and volutes and the meridian flow status of the corresponding diagonal compressors which serves as a basis for the impeller flow path as well as for its matching designs. Considering the interference between the rotor and the upstream and downstream stillness body, this thesis analyzes how the vaneless diffuser meridian flow path, the volute flow path and its section secondary flow affect the upstream rotor flow. Both the calculation and experimental data on the rotor outlet are compared, as well as the calculated numerical value of the meridian plane streamline distribution and the diffuser velocity distribution, upstream and downstream, coincides with the designed numerical value. Without changing the conventional quasi-three-dimensional design system, the thesis applies the annulus wall boundary layer theory and the velocity distribution diagram to sweep and skew the leading edge of the airfoil. A performance test shows that the leading edge skewed-swept diagonal rotor can better improve the stall characteristic in a low flow rate area and expand the surge margin, compared with conventional diagonal rotor. It can also efficiently restrain the low-momentum fluid conglomeration near the wall region and reduce the secondary flow loss by sweeping and skewing the blade properly. The purpose of the thesis is to make a contribution to optimizing the overall structure design of diagonal compressors and to study further the complex internal flow between the leading edge skewed-swept diagonal rotor and the cover.
Źródło:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2009, 13, 1-2; 33-43
1428-6394
Pojawia się w:
TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Operational competitiveness development in turbulent business environment: a case study in Thailand fine gold jewelry export industry
Autorzy:
Nithisathian, K.
Takala, J.
Rattanakomut, S.
Walsh, J.
Wu, Q.
Liu, Y.
Powiązania:
https://bibliotekanauki.pl/articles/407407.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
five forces analysis
sustainable competitiveness
sense and respond
critical factor index
CFI
fine gold jewellery industry
Opis:
The purpose of this paper is to identify and analyze strategy towards Thailand production service industry. Various tools are applied in the paper, including five force analysis, diamond of nation, and sense and respond method with CFI models. The analysis results show that Thai fine gold jewellery exporter should concern on value added and customer requirement; focus on product development, networking, cooperation between Thai organizers and lobbying; pay more attention to marketing orientation than personal judgment. The benefit of combining five force and diamond of nation model to analyse the strategic condition can be proved in this study.
Źródło:
Management and Production Engineering Review; 2012, 3, 3; 53-62
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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