J
Jonna Tiainen
Researcher at Lappeenranta University of Technology
Publications - 20
Citations - 146
Jonna Tiainen is an academic researcher from Lappeenranta University of Technology. The author has contributed to research in topics: Centrifugal compressor & Gas compressor. The author has an hindex of 6, co-authored 18 publications receiving 72 citations.
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Numerical analysis of working fluids for large scale centrifugal compressor driven cascade heat pumps upgrading waste heat
TL;DR: In this paper, a combined method for heat pump thermodynamic analysis and compressor design analysis was developed and implemented in order to investigate the effect of different working fluid combinations and effect of the cascade heat exchanger temperature level on the heat pump performance.
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Flow Control Methods and Their Applicability in Low-Reynolds-Number Centrifugal Compressors—A Review
TL;DR: In this paper, the authors present the state-of-the-art of active and passive flow control methods used to improve performance and/or widen the operating range of low-Reynolds-number centrifugal compressors.
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Experimental and analytical analysis of vaned savonius turbine performance under different operating conditions
TL;DR: In this article, a vaned Savonius wind turbine is tested in a wind tunnel with seven Reynolds numbers and several tip-to-speed ratios, and a new Reynolds number-dependent performance prediction correlation is developed with an achievable accuracy of ± 5%.
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Loss development analysis of a micro-scale centrifugal compressor
TL;DR: In this paper, the authors examined loss development in a vaneless diffuser with respect to the Reynolds number and differentiates between the losses that originate from different causes and showed that the diffuser plays a significant role in the performance deterioration of centrifugal compressors with a low Reynolds number.
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Centrifugal compressor tip clearance and impeller flow
Ahti Jaatinen-Värri,Jonna Tiainen,Teemu Turunen-Saaresti,Aki Grönman,Alireza Ameli,Abraham Engeda,Jari Backman +6 more
TL;DR: In this article, the effect of tip leakage flow on the passage flow differs between the full and splitter blade passages, and the differences in the flow fields between these passages were studied numerically in detail.