Experimental Investigation of Surge Phenomena in a Transonic Centrifugal Compressor With Inlet Distortion

2020 ◽  
Author(s):  
Sasuga Ito ◽  
Masato Furukawa ◽  
Satoshi Gunjishima ◽  
Takafumi Ota ◽  
Kazuhito Konishi ◽  
...  
Keyword(s):  
Flow Rate ◽  
Centrifugal Compressor ◽  
Flow Instability ◽  
Pressure Sensors ◽  
Low Flow ◽  
Inlet Distortion ◽  
Transonic Centrifugal Compressor ◽  
Response Pressure ◽  
Surge Phenomena ◽  
Low Flow Rate

Abstract Inlet distortion has influence on the aerodynamic performance of turbomachinery such as compressors, turbines and fans. On turbochargers, bent pipes are installed around the compressor due to the spatial limitations in the engine room of the vehicle. As the result, the compressor is operated with the distorted inflow. In the low flow rate operation, the distorted inflow also affects the flow instability like stall and surge. Especially, the operation range on the low flow rate side is defined based on the flow rate where surge occurs, so it is important to investigate the effect of the distorted inflow on surge. In this study, the effect of the inlet distortion to surge phenomena has been investigated by the experiments with a transonic centrifugal compressor. A bent pipe has been installed at the upstream of the compressor to generate a distorted flow. Experiments have been also conducted under the condition that a straight pipe was installed upstream of the compressor, and unsteady measurements with high response pressure sensors and an I-type hot wire probe have been carried out to each experiments. In addition, Fast Fourier transform (FFT) and Wavelet transform have been applied to the unsteady measurement results obtained from each experiment.

Experimental Investigation of Surge Phenomena in a Transonic Centrifugal Compressor

2019 ◽  
Author(s):  
Sasuga Ito ◽  
Masato Furukawa ◽  
Satoshi Gunjishima ◽  
Hiroki Usuki ◽  
Takafumi Ota ◽  
...  
Keyword(s):  
Unsteady Flow ◽  
Centrifugal Compressor ◽  
Static Pressure ◽  
High Response ◽  
Low Flow ◽  
Pipeline System ◽  
Flow Phenomenon ◽  
Pressure Transducers ◽  
Transonic Centrifugal Compressor ◽  
Response Pressure

Abstract Surge is an unsteady flow phenomenon occurring at low flow rates in the pipeline system including compressors. The surge is a phenomenon that must be avoided because of the danger in the operation: the pipeline equipment can be damaged or the operation cannot be continued. Experimental work is required not only to understand the unsteady behavior but to also validate the CFD used for more localized analysis and development of the understanding of the flow phenomena when operating near surge. Nevertheless, there are still many unclear points not only about the flow phenomenon at the inception of the surge which is important for the prediction of the surge but also about the surge behavior itself. Especially, as for the surge occurring in transonic centrifugal compressors, there are currently few experimental research cases due to the difficulty of the unsteady measurement. In this research, we measured the time variations in pressure and flow rate in a transonic centrifugal compressor for a vehicle turbocharger which consists of an impeller, vaneless diffuser and scroll. In the experiments, the measurement pipes were set upstream and downstream of the compressor and the velocity and the wall static pressure were measured with an I-type hot wire probe and high response pressure transducers, respectively. In addition, to investigate the process and the occurrence point of the back flow in surge, the wall static pressure was measured by means of high response pressure transducers which were mounted on the shroud upstream of the impeller and the diffuser hub at the two-circumferential positions, respectively. As the result of the experiments, the unsteady flow process during the mild and deep surges was measured and the inception of deep surge was clarified.

High Efficiency Low Flow Rate Centrifugal Compressor for The More Electric Aircraft

1994 ◽  
Author(s):  
F. Gui ◽  
T. R. Reinarts ◽  
R.P. Scaringe ◽  
Joseph M. Gottschlich
Keyword(s):  
Flow Rate ◽  
Centrifugal Compressor ◽  
High Efficiency ◽  
Low Flow ◽  
Electric Aircraft ◽  
More Electric Aircraft ◽  
Low Flow Rate

scholarly journals Two-Phase Flow Instability at Low Flow Rate Conditions

1984 ◽  
Vol 21 (7) ◽  
pp. 491-500 ◽  
Author(s):  
Kenji FUKUDA ◽  
Akihiko KATO ◽  
Shu HASEGAWA
Keyword(s):  
Flow Rate ◽  
Two Phase Flow ◽  
Flow Instability ◽  
Low Flow ◽  
Phase Flow ◽  
Two Phase ◽  
Low Flow Rate

Development of a Centrifugal Compressor Facility for Performance and Aeromechanics Research

2016 ◽  
Author(s):  
Fangyuan Lou ◽  
Herbert M. Harrison ◽  
John C. Fabian ◽  
Nicole L. Key ◽  
Darrell K. James ◽  
...  
Keyword(s):  
Centrifugal Compressor ◽  
Pressure Sensors ◽  
Fast Response ◽  
Tool Development ◽  
Research Facility ◽  
Inlet Distortion ◽  
Compressor Inlet ◽  
Response Pressure ◽  
Development And Validation ◽  
Clearance Control

This paper details the development of a Single Stage Centrifugal Compressor (SSCC) research facility at Purdue University in collaboration with Honeywell. The research vehicle is a Honeywell experimental compressor that has been specifically outfitted with a variety of instrumentation for research purposes. Both steady-state and fast-response instrumentation will be used to provide benchmark experimental data for performance and aeromechanics tool development and validation. Some unique facility aspects include real-time clearance control, active bleed flow management, fast-response pressure sensors embedded in the impeller, and a full circumferential traverse at the compressor inlet to facilitate inlet distortion quantification. The details of the facility and baseline results are presented.

Experimental Investigation of Surge Phenomena in a Transonic Centrifugal Compressor With Inlet Distortion

2021 ◽  
Author(s):  
Sasuga ITO ◽  
Masato Furukawa ◽  
Satoshi Gunjishima ◽  
Takafumi Ota ◽  
Kazuhito Konishi ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Centrifugal Compressor ◽  
Inlet Distortion ◽  
Transonic Centrifugal Compressor ◽  
Surge Phenomena

scholarly journals Periodicity of Pressure Fluctuations at Low Flow Rate in Delivery Duct of Centrifugal Compressor.

1995 ◽  
Vol 61 (591) ◽  
pp. 3848-3853
Author(s):  
Yasuyuki Komatsubara ◽  
Atsutaka Muto ◽  
Hoshio Tsujita ◽  
Shimpei Mizuki
Keyword(s):  
Flow Rate ◽  
Centrifugal Compressor ◽  
Pressure Fluctuations ◽  
Low Flow ◽  
Low Flow Rate
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