Estimation of the Effect of 3D Grid Parameters on the Simulation of the Working Process of Axial Turbines

Grigorii Popov, Valery Matveev, Oleg Baturin, Iuliia Novikova, Daria Kolmakova, Vasilii Zubanov

2018

Abstract

This article describes the second part of the global work done by the authors aimed at finding the best settings for a numerical model for calculations of axial uncooled turbines using the RANS approach. The authors studied more than 80 papers published over the past 5 years in the examined field. Their analysis did not allow to identify unified recommendations for the creation of numerical models. The selection of model parameters is usually motivated by general considerations of numerical simulation, which follow from the method. In none of the papers the selection of parameters is correlated with the structure of the flow in the turbine. Many specific simulation issues were not covered at all. For the research, more than 1000 models of full-size axial turbines (including multistage turbines) and their elements were created. They differed in the number, size, parameters of the elements of finite volume meshes, in turbulence models, in the degree of simplification. The results were compared with the experimental data. As a result, the following was obtained: 1. A method for developing and optimizing the working process of turbines using numerical simulation based on the RANS approach is proposed. The search for the optimal turbine configuration is carried out using light computational models, which are based on the simplified channel geometry and the finite volume mesh. Their application makes it possible to reliably find the optimal turbine configuration 2.8 times faster. The characteristics of the selected variants are verified with the help of verification models that consider the real geometry of the channels and have a minimum error. 2. Recommendations are given on the selection of parameters for finite volume meshes and the selection of turbulence models for numerical models of the working process of axial turbines designed to perform optimization and verification calculations.

Paper Citation

in Harvard Style

Popov G., Matveev V., Baturin O., Novikova I. and Kolmakova D. (2018). Estimation of the Effect of 3D Grid Parameters on the Simulation of the Working Process of Axial Turbines.In Proceedings of 8th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH, ISBN 978-989-758-323-0, pages 371-377. DOI: 10.5220/0006890203710377

in Bibtex Style

@conference{simultech18,
author={Grigorii Popov and Valery Matveev and Oleg Baturin and Iuliia Novikova and Daria Kolmakova},
title={Estimation of the Effect of 3D Grid Parameters on the Simulation of the Working Process of Axial Turbines},
booktitle={Proceedings of 8th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,},
year={2018},
pages={371-377},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006890203710377},
isbn={978-989-758-323-0},
}

in EndNote Style

TY - CONF

JO - Proceedings of 8th International Conference on Simulation and Modeling Methodologies, Technologies and Applications - Volume 1: SIMULTECH,
TI - Estimation of the Effect of 3D Grid Parameters on the Simulation of the Working Process of Axial Turbines
SN - 978-989-758-323-0
AU - Popov G.
AU - Matveev V.
AU - Baturin O.
AU - Novikova I.
AU - Kolmakova D.
PY - 2018
SP - 371
EP - 377
DO - 10.5220/0006890203710377