Effect of a rotor's aspect ratio and casing inlet/outlet geometry on the efficiency of a rotor-casing assembly

Abu-Hijleh, B, TU, J and Subic, A 2008, 'Effect of a rotor's aspect ratio and casing inlet/outlet geometry on the efficiency of a rotor-casing assembly', International Journal of Vehicle Design, vol. 48, no. 12, pp. 1-22.


Document type: Journal Article
Collection: Journal Articles

Title Effect of a rotor's aspect ratio and casing inlet/outlet geometry on the efficiency of a rotor-casing assembly
Author(s) Abu-Hijleh, B
TU, J
Subic, A
Year 2008
Journal name International Journal of Vehicle Design
Volume number 48
Issue number 12
Start page 1
End page 22
Total pages 22
Publisher Inderscience Publishers
Abstract Computational fluid dynamics (CFD) simulation was used to study the effect of modifying the inlet and outlet of an elliptical rotor-casing assembly at two different rotor aspect ratios. The simulations were carried at different inlet velocities and rotor angular speeds. The flow field results were used to ascertain the changes in the efficiency of the rotor-casing assembly. The focus was on inlet pressure, maximum velocity, and maximum turbulence values. Entropy calculations were also used to evaluate the impact of the different configurations on the overall thermodynamic efficiency of the rotor-casing assembly. The results show the use of fillets has several advantages, especially when using high aspect-ratio rotors at high rpm values.
ISSN 0143-3369
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