Kunniyoor, V and Singh, P and Nadella, K (2021) Aerodynamic design and computational fluid dynamic analysis of radial outflow turbines for steam Rankine cycle and supercritical carbon dioxide Brayton cycle. In: Progress in Computational Fluid Dynamics, 21 (2). pp. 65-90.
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The first part of this paper presents the design of a radial outflow steam turbine for a micro steam power pump block of 200 kW capacity based on a unique Ljungstrom turbine design methodology. Computational fluid dynamic (CFD) simulations were carried out for the 18-stage radial outflow steam turbine at design and off-design points, and results proved the validity of the undertaken design methodology. The design point CFD simulation showed a total to total efficiency of 74.4 for the steam turbine. Specific speed and specific diameter values for the radial outflow steam turbine stages were calculated and superimposed on the Balje's specific speed-specific diameter chart, thus identifying a unique radial outflow turbine zone in the chart. The second part of this paper presents a new design methodology based on specific speed and specific diameter values for designing a supercritical carbon dioxide radial outflow turbine for a 1 MW supercritical carbon dioxide (SCO2) Brayton cycle. CFD simulations were carried out at design and off-design points for the SCO2 turbine. The total to total efficiency from the CFD simulation at the design point for the SCO2 turbine is 84.6. Copyright © 2021 Inderscience Enterprises Ltd.
| Item Type: | Journal Article |
|---|---|
| Publication: | Progress in Computational Fluid Dynamics |
| Publisher: | Inderscience Publishers |
| Additional Information: | The copyright for this article belongs to Inderscience Publishers |
| Keywords: | Aerodynamics; Brayton cycle; Carbon dioxide; Computational fluid dynamics; Cost effectiveness; Efficiency; Rankine cycle; Steam; Steam turbines; Supercritical fluid extraction, Aerodynamic designs; CFD simulations; Design Methodology; Off-design points; Radial outflow turbines; Supercritical carbon dioxides; Total efficiency; Turbine designs, Design |
| Department/Centre: | Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Centre for Sustainable Technologies (formerly ASTRA) Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 19 Apr 2021 09:47 |
| Last Modified: | 19 Apr 2021 09:47 |
| URI: | http://eprints.iisc.ac.in/id/eprint/68643 |
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