TY - GEN
T1 - FLOW INTERACTION BETWEEN CASCADE AND FLOW RESISTANCE MEDIUM
AU - Lin, Tong
AU - Sarimurat, Mehmet
AU - Dang, Thong Quoc
N1 - Publisher Copyright:
Copyright © 2023 by ASME.
PY - 2023
Y1 - 2023
N2 - This paper investigates the effects of flow-interaction between a rotor and a high-resistance medium (HRM) on both rotor and system performance within the 2D cascade limit using computational fluid dynamics (CFD). Two configurations were studied: the Rotor/HRM configuration, where the HRM is located downstream of the rotor, and the HRM/Rotor configuration, where the HRM is located upstream of the rotor. The results indicate that fan performance increases from the interaction effect, along with an extension of the stall margin. However, the pressure drop across the HRM is increased due to an increase in velocity magnitude and non-uniformity, which can lower system overall performance. In the HRM/Rotor configuration, the presence of an upstream close-coupled HRM induces a high-velocity jet around the blade which is more significant on the suction surface and appears to delay flow separation, resulting in an extension of the stall margin. In the Rotor/HRM configuration, the boundary-layer thickness on the blade surfaces is reduced, resulting in delaying stall. In both cases, flow non-uniformity and the presence of swirl velocity in the HRM increases the pressure loss across it.
AB - This paper investigates the effects of flow-interaction between a rotor and a high-resistance medium (HRM) on both rotor and system performance within the 2D cascade limit using computational fluid dynamics (CFD). Two configurations were studied: the Rotor/HRM configuration, where the HRM is located downstream of the rotor, and the HRM/Rotor configuration, where the HRM is located upstream of the rotor. The results indicate that fan performance increases from the interaction effect, along with an extension of the stall margin. However, the pressure drop across the HRM is increased due to an increase in velocity magnitude and non-uniformity, which can lower system overall performance. In the HRM/Rotor configuration, the presence of an upstream close-coupled HRM induces a high-velocity jet around the blade which is more significant on the suction surface and appears to delay flow separation, resulting in an extension of the stall margin. In the Rotor/HRM configuration, the boundary-layer thickness on the blade surfaces is reduced, resulting in delaying stall. In both cases, flow non-uniformity and the presence of swirl velocity in the HRM increases the pressure loss across it.
KW - Fan System Integration
KW - Highly-Coupled Fan System
UR - http://www.scopus.com/inward/record.url?scp=85175512507&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85175512507&partnerID=8YFLogxK
U2 - 10.1115/GT2023-101271
DO - 10.1115/GT2023-101271
M3 - Conference contribution
AN - SCOPUS:85175512507
T3 - Proceedings of the ASME Turbo Expo
BT - Education; Electric Power; Energy Storage; Fans and Blowers
PB - American Society of Mechanical Engineers (ASME)
T2 - ASME Turbo Expo 2023: Turbomachinery Technical Conference and Exposition, GT 2023
Y2 - 26 June 2023 through 30 June 2023
ER -