Autor: Zheng, Qun - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Centrifugal compressor performance improvement through multi splitter impeller
Autorzy:: Malik, Adil
Zheng, Qun
Qureshi, Shafiq R.
Ahmed, Salman A.
Gambo, D. KB
Powiązania:: https://bibliotekanauki.pl/articles/258806.pdf
Data publikacji:: 2019
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: centrifugal compressor
back swept impeller
flow separation
efficiency
numerical simulation
Opis:: In the paper, a back swept impeller of centrifugal compressor is experimentally studied and numerically validated and modified to increase its pressure ratio and improve efficiency, as well as to analyse the effect of splitter blade location between two main blades. The back swept multi splitter blade impeller was designed with a big splitter positioned close to the main blade suction surface and a smaller splitter close to the pressure surface. Adding this multi splitter improves the overall performance of the modified impeller due to less intensive flow separation and smaller pressure loss. In particular, the total pressure ratio was observed to increase from 4.1 to 4.4, with one percent increase in efficiency.
Źródło:: Polish Maritime Research; 2019, 2; 6-14
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: The elastic anisotropic and thermodynamic properties of I4mm-B₃C
Autorzy:: Fan, Qingyang
Wei, Qun
Chai, Changchun
Yang, Yintang
Yu, Xinhai
Liu, Yang
Zheng, Junping
Zhou, Peikun
Zhang, Dongyun
Powiązania:: https://bibliotekanauki.pl/articles/1075538.pdf
Data publikacji:: 2016-01
Wydawca:: Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:: 71.15.Mb
65.40.De
62.20.de
Opis:: The structural, elastic anisotropy and thermodynamic properties of the I4mm-B₃C are investigated using first-principles calculations and the quasi-harmonic Debye model. The calculated elastic anisotropic suggest that I4mm-B₃C is elastically anisotropic with its Poisson ratio, shear modulus, the Young modulus, the universal anisotropic index, shear anisotropic factors, and the percentage of elastic anisotropy for bulk modulus and shear modulus. The quasi-harmonic Debye model, using a set of total energy versus molar volume obtained with the first-principles calculations, is applied to the study of the thermal and vibrational effects. The thermal expansions, heat capacities, the Grüneisen parameters and the Debye temperatures dependence on the temperature and pressure are obtained in the whole pressure range from 0 to 90 GPa and temperature range from 0 to 2000 K.
Źródło:: Acta Physica Polonica A; 2016, 129, 1; 103-107
0587-4246
1898-794X
Pojawia się w:: Acta Physica Polonica A
Dostawca treści:: Biblioteka Nauki

Artykuł

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