Сибирский федеральный университет

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Symposium on Turbulence, Heat and Mass Transfer, THMT 2015; Sarajevo; Sarajevo

Год издания: 2015

Аннотация: We presents some results of numerical simulation of flow in a 60:1 scaled-down laboratory model of a Kaplan hydroturbine at a part load of about 40% nominal flow rate, using several RANS models (realizable k-ϵ k-ω SST EVMs and LRR RSM), DES (all on 2 mill cells) and LES (on 6 mill cells). Unlike the linear eddy viscosity models, the RSM, DES and LES all reproduced well the available mean velocity axial and tangential components and the rsm of their fluctuations in the draft tube diffusor. Despite a relatively coarse mesh that did not resolve well the near-wall region, LES, DES and RSM reproduced well the intrinsic flow unsteadiness and the dominant flow structures, all capturing a double rope pattern in the cone behind the turbine runner.

Журнал: Proceedings of the International Symposium on Turbulence, Heat and Mass Transfer

Номера страниц: 803-806

Издатель: Begell House Inc.

• Minakov A. (Novosibirsk State University)
• Platonov D. (Novosibirsk State University)
• Litvinov I. (Novosibirsk State University)
• Hanjalić K. (Delft University of Technology,Chem. Eng. Dept.)

• Ядро РИНЦ (eLIBRARY.RU)