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Proceedings Papers

Design and Testing of a Hot Gas Blower for Solid Oxide Fuel Cell Applications

Juha Honkatukia, Ahti Jaatinen-Värri, Teemu Turunen-Saaresti, Aki Grönman, Petri Sallinen, Jari Backman
Proc. ASME. GT2020, Volume 5: Controls, Diagnostics, and Instrumentation; Cycle Innovations; Cycle Innovations: Energy Storage, V005T06A004, September 21–25, 2020
Paper No: GT2020-14460
DOI: https://doi.org/10.1115/GT2020-14460
View Paper titled, Design and Testing of a Hot Gas Blower for Solid Oxide Fuel Cell Applications
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Topics: Design, Solid oxide fuel cells, Testing, Anodes, High temperature, Cooling, Pressure, Temperature
Proceedings Papers

Experimental and Analytical Analysis of Aero-Derivative Micro Gas Turbine Heat Transfer and Performance

Aki Grönman, Petri Sallinen, Juha Honkatukia, Jari Backman, Antti Uusitalo, Janne Nerg, Ahti Jaatinen-Värri
Proc. ASME. GT2019, Volume 8: Microturbines, Turbochargers, and Small Turbomachines; Steam Turbines, V008T26A001, June 17–21, 2019
Paper No: GT2019-90010
DOI: https://doi.org/10.1115/GT2019-90010
View Paper titled, Experimental and Analytical Analysis of Aero-Derivative Micro Gas Turbine Heat Transfer and Performance
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Topics: Heat transfer, Micro gas turbines, Generators, Cooling, Machinery, Design, Engines, Experimental analysis, Flow (Dynamics), Gas turbines
Journal Articles

Effect of FreeStream Velocity Definition on Boundary Layer Thickness and Losses in Centrifugal Compressors

Jonna Tiainen, Ahti Jaatinen-Värri, Aki Grönman, Teemu Turunen-Saaresti, Jari Backman
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. May 2018, 140(5): 051003.
Paper No: TURBO-17-1192
DOI: https://doi.org/10.1115/1.4038872
Published Online: February 27, 2018
View Article titled, Effect of FreeStream Velocity Definition on Boundary Layer Thickness and Losses in Centrifugal Compressors
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Topics: Blades, Boundary layers, Compressors, Flow (Dynamics)
Proceedings Papers

A Comparison of Small-Scale Gas Turbine Control Schemes

Ahti Jaatinen-Värri, Jari Backman, Juha Honkatukia, Matti Malkamäki
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A020, June 26–30, 2017
Paper No: GT2017-64329
DOI: https://doi.org/10.1115/GT2017-64329
View Paper titled, A Comparison of Small-Scale Gas Turbine Control Schemes
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Topics: Gas turbines, Stress, Combined heat and power, Distributed power generation, Machinery, Biogas, Electrical efficiency, Energy generation, Fuels, Generators
Proceedings Papers

Three Spool High Efficiency Small Scale Gas Turbine Concept

Matti Malkamäki, Ahti Jaatinen-Värri, Antti Uusitalo, Aki Grönman, Juha Honkatukia, Jari Backman, Toni Hartikainen
Proc. ASME. GT2017, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T26A022, June 26–30, 2017
Paper No: GT2017-64361
DOI: https://doi.org/10.1115/GT2017-64361
View Paper titled, Three Spool High Efficiency Small Scale Gas Turbine Concept
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Topics: Gas turbines, Electrical efficiency, Piston engines, Distributed power generation, Energy generation, Heat, Turbines, Compressors, Construction, Design
Proceedings Papers

Effect of Free-Stream Velocity Definition on Boundary Layer Thickness and Losses in Centrifugal Compressors

Jonna Tiainen, Ahti Jaatinen-Värri, Aki Grönman, Teemu Turunen-Saaresti, Jari Backman
Proc. ASME. GT2017, Volume 2C: Turbomachinery, V02CT44A006, June 26–30, 2017
Paper No: GT2017-63268
DOI: https://doi.org/10.1115/GT2017-63268
View Paper titled, Effect of Free-Stream Velocity Definition on Boundary Layer Thickness and Losses in Centrifugal Compressors
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Topics: Boundary layers, Compressors, Blades, Flow (Dynamics), Cascades (Fluid dynamics), Pressure gradient, Turbomachinery, Wakes
Proceedings Papers

Numerical Study of the Reynolds Number Effect on the Centrifugal Compressor Performance and Losses

Jonna Tiainen, Ahti Jaatinen-Värri, Aki Grönman, Jari Backman
Proc. ASME. GT2016, Volume 2D: Turbomachinery, V02DT42A002, June 13–17, 2016
Paper No: GT2016-56036
DOI: https://doi.org/10.1115/GT2016-56036
View Paper titled, Numerical Study of the Reynolds Number Effect on the Centrifugal Compressor Performance and Losses
Click here to open pdf in another window PDF for Numerical Study of the Reynolds Number Effect on the Centrifugal Compressor Performance and Losses
Topics: Compressors, Reynolds number, Blades, Boundary layers, Chords (Trusses), Impellers, Shear stress, Vorticity
Proceedings Papers

Design of a 400 kW Gas Turbine Prototype

Ahti Jaatinen-Värri, Janne Nerg, Antti Uusitalo, Behnam Ghalamchi, Nikita Uzhegov, Alexander Smirnov, Eerik Sikanen, Aki Grönman, Jari Backman, Matti Malkamäki
Proc. ASME. GT2016, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A007, June 13–17, 2016
Paper No: GT2016-56444
DOI: https://doi.org/10.1115/GT2016-56444
View Paper titled, Design of a 400 kW Gas Turbine Prototype
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Topics: Design, Engineering prototypes, Gas turbines, Generators, Piston engines, Bearing design, Bearings, Combustion chambers, Compressors, Design engineering
Proceedings Papers

Experiences From Changing the Study Platform of Turbomachinery Course From Blended Education to Problem Based Learning

Aki Grönman, Jari Backman, Ahti Jaatinen-Värri, Kaisa Grönman
Proc. ASME. GT2016, Volume 6: Ceramics; Controls, Diagnostics and Instrumentation; Education; Manufacturing Materials and Metallurgy, V006T07A003, June 13–17, 2016
Paper No: GT2016-56200
DOI: https://doi.org/10.1115/GT2016-56200
View Paper titled, Experiences From Changing the Study Platform of Turbomachinery Course From Blended Education to Problem Based Learning
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Topics: Education, Turbomachinery, Students, Design, Engineering teachers, Feedback, Teaching
Proceedings Papers

Design and Performance Measurements of a 6 kW High-Speed Micro Gas Turbine Prototype

Aki Grönman, Juha Honkatukia, Petri Sallinen, Jari Backman, Antti Uusitalo, Teemu Turunen-Saaresti, Ahti Jaatinen-Värri
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A005, June 15–19, 2015
Paper No: GT2015-42620
DOI: https://doi.org/10.1115/GT2015-42620
View Paper titled, Design and Performance Measurements of a 6 kW High-Speed Micro Gas Turbine Prototype
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Topics: Design, Engineering prototypes, Micro gas turbines, Engines, Generators, Fuel consumption, Jet engines, Aircraft, Boats, Earthquakes
Proceedings Papers

Numerical Investigation of Centrifugal Compressor Tip Clearance

Ahti Jaatinen-Värri, Teemu Turunen-Saaresti, Aki Grönman, Jari Backman, Jonna Tiainen
Proc. ASME. GT2015, Volume 2C: Turbomachinery, V02CT42A028, June 15–19, 2015
Paper No: GT2015-43199
DOI: https://doi.org/10.1115/GT2015-43199
View Paper titled, Numerical Investigation of Centrifugal Compressor Tip Clearance
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Topics: Clearances (Engineering), Compressors, Blades, Flow (Dynamics), Impellers, Suction, Diffusers, Pressure, Wakes
Proceedings Papers

Experimental Study of the Effect of the Tip Clearance to the Diffuser Flow Field and Stage Performance of a Centrifugal Compressor

Ahti Jaatinen, Teemu Turunen-Saaresti, Aki Grönman, Pekka Röyttä, Jari Backman
Proc. ASME. GT2012, Volume 8: Turbomachinery, Parts A, B, and C, 641-648, June 11–15, 2012
Paper No: GT2012-68445
DOI: https://doi.org/10.1115/GT2012-68445
View Paper titled, Experimental Study of the Effect of the Tip Clearance to the Diffuser Flow Field and Stage Performance of a Centrifugal Compressor
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Topics: Clearances (Engineering), Compressors, Diffusers, Flow (Dynamics), Pressure, Probes, Impellers, Blades, Temperature
Journal Articles

Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss

Teemu Turunen-Saaresti, Ahti Jaatinen
Journal: Journal of Turbomachinery
Article Type: Research-Article
J. Turbomach. January 2013, 135(1): 011017.
Paper No: TURBO-11-1112
DOI: https://doi.org/10.1115/1.4006388
Published Online: October 30, 2012
View Article titled, Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss
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Topics: Clearances (Engineering), Compressors, Pressure, Blades, Design
Proceedings Papers

Design and Implementation of Problem-Based Learning in a Graduate Engineering Course

Ahti Jaatinen, Teemu Turunen-Saaresti, Jari Backman
Proc. ASME. GT2011, Volume 3: Controls, Diagnostics and Instrumentation; Education; Electric Power; Microturbines and Small Turbomachinery; Solar Brayton and Rankine Cycle, 511-516, June 6–10, 2011
Paper No: GT2011-46288
DOI: https://doi.org/10.1115/GT2011-46288
View Paper titled, Design and Implementation of Problem-Based Learning in a Graduate Engineering Course
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Topics: Design, Engineering education, Students, Feedback
Proceedings Papers

Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss

Teemu Turunen-Saaresti, Ahti Jaatinen
Proc. ASME. GT2011, Volume 7: Turbomachinery, Parts A, B, and C, 2189-2196, June 6–10, 2011
Paper No: GT2011-46627
DOI: https://doi.org/10.1115/GT2011-46627
View Paper titled, Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss
Click here to open pdf in another window PDF for Influence of the Different Design Parameters to the Centrifugal Compressor Tip Clearance Loss
Topics: Clearances (Engineering), Compressors, Design, Blades, Diffusion (Physics)
Proceedings Papers

Experimental Study of Vaned Diffusers in Centrifugal Compressor

Ahti Jaatinen, Aki-Pekka Gro¨nman, Teemu Turunen-Saaresti, Jari Backman
Proc. ASME. GT2010, Volume 7: Turbomachinery, Parts A, B, and C, 1983-1995, June 14–18, 2010
Paper No: GT2010-22883
DOI: https://doi.org/10.1115/GT2010-22883
View Paper titled, Experimental Study of Vaned Diffusers in Centrifugal Compressor
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Topics: Compressors, Diffusers, Flow (Dynamics), Design, Vaneless diffusers, Energy consumption
Proceedings Papers

Radial Forces in a Centrifugal Compressor Equipped With Vaned Diffusers

Ahti Jaatinen, Jari L. H. Backman, Teemu Turunen-Saaresti
Proc. ASME. GT2009, Volume 7: Turbomachinery, Parts A and B, 1419-1425, June 8–12, 2009
Paper No: GT2009-60130
DOI: https://doi.org/10.1115/GT2009-60130
View Paper titled, Radial Forces in a Centrifugal Compressor Equipped With Vaned Diffusers
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Topics: Compressors, Diffusers, Impellers, Vaneless diffusers, Flow (Dynamics), Magnetic bearings, Pressure, Design, Force measurement, Manufacturing
Proceedings Papers

Experimental Study of Pinch in Vaneless Diffuser of Centrifugal Compressor

Teemu Turunen-Saaresti, Aki-Pekka Gro¨nman, Ahti Jaatinen
Proc. ASME. GT2009, Volume 7: Turbomachinery, Parts A and B, 1427-1438, June 8–12, 2009
Paper No: GT2009-60162
DOI: https://doi.org/10.1115/GT2009-60162
View Paper titled, Experimental Study of Pinch in Vaneless Diffuser of Centrifugal Compressor
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Topics: Compressors, Pinch effect, Vaneless diffusers, Flow (Dynamics), Diffusers, Pressure, Design, Rotors, Probes, Geometry
Proceedings Papers

Blended Education in Turbomachinery and Fluid Dynamics

Jari L. H. Backman, Teemu Turunen-Saaresti, Ahti Jaatinen
Proc. ASME. GT2009, Volume 1: Aircraft Engine; Ceramics; Coal, Biomass and Alternative Fuels; Controls, Diagnostics and Instrumentation; Education; Electric Power; Awards and Honors, 839-843, June 8–12, 2009
Paper No: GT2009-59799
DOI: https://doi.org/10.1115/GT2009-59799
View Paper titled, Blended Education in Turbomachinery and Fluid Dynamics
Click here to open pdf in another window PDF for Blended Education in Turbomachinery and Fluid Dynamics
Topics: Education, Fluid dynamics, Turbomachinery, Students, Teaching, Engineering teachers, Feedback