Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines

A. Minakov; I. Litvinov; D. Platonov; A. Dekterev; S. Shtork; K. Hanjalić

doi:10.1615/THMT-18.900

Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines

A. Minakov, I. Litvinov, D. Platonov, A. Dekterev, S. Shtork, K. Hanjalić

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

– We report on parallel experimental and numerical studies of flow, internal unsteadiness, vortex instability and associated pressure pulsations in an air model of hydroturbine draft-tube operating at off-design conditions. The air-rig, equipped with automated Laser-Doppler velocimeter and sensitive microphones, accommodates different types of surrogate turbine rotors manufactured by rapid prototyping and 3D printing, making it possible to explore a large number of different turbine and draft-tube configurations. The part-load regimes reveal in draft-tube different patterns of precessing vortex cores in form of multiple or single helical ropes, accompanied by pressure pulsations with distinct peaks at the characteristic frequencies. The complementing LES as well as some of the RANS models reproduced well the flow patterns, vortex structures and the recorded pressure pulsations, supplementing the experiments with information that are inaccessible to measurements.

Original language	English
Title of host publication	THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer
Publisher	Begell House Inc.
Pages	847-857
Number of pages	11
ISBN (Electronic)	9781567004687
DOIs	https://doi.org/10.1615/THMT-18.900
State	Published - 2018
Externally published	Yes
Event	9th International Symposium on Turbulence Heat and Mass Transfer, THMT 2018 - Rio de Janeiro, Brazil Duration: 10 Jul 2018 → 13 Jul 2018

Publication series

Name	Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer
Volume	2018-July

Conference

Conference	9th International Symposium on Turbulence Heat and Mass Transfer, THMT 2018
Country/Territory	Brazil
City	Rio de Janeiro
Period	10/07/18 → 13/07/18

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy
SDG 9 Industry, Innovation, and Infrastructure

All Science Journal Classification (ASJC) codes

Fluid Flow and Transfer Processes

Access to Document

10.1615/THMT-18.900

Cite this

Minakov, A., Litvinov, I., Platonov, D., Dekterev, A., Shtork, S., & Hanjalić, K. (2018). Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines. In THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer (pp. 847-857). (Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer; Vol. 2018-July). Begell House Inc.. https://doi.org/10.1615/THMT-18.900

Minakov, A. ; Litvinov, I. ; Platonov, D. et al. / Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines. THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer. Begell House Inc., 2018. pp. 847-857 (Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer).

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abstract = "– We report on parallel experimental and numerical studies of flow, internal unsteadiness, vortex instability and associated pressure pulsations in an air model of hydroturbine draft-tube operating at off-design conditions. The air-rig, equipped with automated Laser-Doppler velocimeter and sensitive microphones, accommodates different types of surrogate turbine rotors manufactured by rapid prototyping and 3D printing, making it possible to explore a large number of different turbine and draft-tube configurations. The part-load regimes reveal in draft-tube different patterns of precessing vortex cores in form of multiple or single helical ropes, accompanied by pressure pulsations with distinct peaks at the characteristic frequencies. The complementing LES as well as some of the RANS models reproduced well the flow patterns, vortex structures and the recorded pressure pulsations, supplementing the experiments with information that are inaccessible to measurements.",

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Minakov, A, Litvinov, I, Platonov, D, Dekterev, A, Shtork, S & Hanjalić, K 2018, Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines. in THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer. Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer, vol. 2018-July, Begell House Inc., pp. 847-857, 9th International Symposium on Turbulence Heat and Mass Transfer, THMT 2018, Rio de Janeiro, Brazil, 10/07/18. https://doi.org/10.1615/THMT-18.900

Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines. / Minakov, A.; Litvinov, I.; Platonov, D. et al.
THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer. Begell House Inc., 2018. p. 847-857 (Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer; Vol. 2018-July).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - – We report on parallel experimental and numerical studies of flow, internal unsteadiness, vortex instability and associated pressure pulsations in an air model of hydroturbine draft-tube operating at off-design conditions. The air-rig, equipped with automated Laser-Doppler velocimeter and sensitive microphones, accommodates different types of surrogate turbine rotors manufactured by rapid prototyping and 3D printing, making it possible to explore a large number of different turbine and draft-tube configurations. The part-load regimes reveal in draft-tube different patterns of precessing vortex cores in form of multiple or single helical ropes, accompanied by pressure pulsations with distinct peaks at the characteristic frequencies. The complementing LES as well as some of the RANS models reproduced well the flow patterns, vortex structures and the recorded pressure pulsations, supplementing the experiments with information that are inaccessible to measurements.

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Minakov A, Litvinov I, Platonov D, Dekterev A, Shtork S, Hanjalić K. Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines. In THMT 2018 - Proceedings of the 9th International Symposium on Turbulence Heat and Mass Transfer. Begell House Inc. 2018. p. 847-857. (Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer). doi: 10.1615/THMT-18.900

Numerical verification of rapid-prototyped flexible surrogates of laboratory models of hydroturbines

Abstract

Publication series

Conference

UN SDGs

All Science Journal Classification (ASJC) codes

Access to Document

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