The main purpose of the turbomachinery industry is to develop more efficient and environmental friendly engines. The modern design trend is to decrease the number of stages and blade count leading to thinner and lighter profiles. At the same time, this trend entails engines blade-rows more prone to flutter and forced response issues. This paper presents an integrated tool-chain to investigate aeroelastic phenomena automatizing the overall procedure. The method is based on the open-source FEM solver (CalculiX) and on the in-house CFD code (TRAF). The combined use of these solvers requires BCs exchanges from solid to fluid domain and vice versa. For this purpose, a dedicated tool-chain was implemented: it allows the automatic transfer of the blade mode shapes, computed by the FEM solver, to the CFD domain for flutter analyses (URANS computations with moving blade). On the other hand, the tool-chain is used to transfer the unsteady pressure field, computed by an unsteady CFD analysis on the blade surface, into the solid model in order to perform a forced response evaluation. Both these BCs exchanges require the overlapping of CFD and FEM meshes on the blade surface. To do so, an automatic method to find out the rotation matrix and translation vector between the two different domains is integrated in the tool-chain. The procedure has been tested on 1 and 1/2 low pressure transonic compressor stage and the numerical results are compared with experimental data acquired in the context of the EU FUTURE project. Such comparisons confirm the applicability of the procedure in the blade-row design loop.
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17 December 2019
74TH ATI NATIONAL CONGRESS: Energy Conversion: Research, Innovation and Development for Industry and Territories
11–13 September 2019
Modena, Italy
Research Article|
December 17 2019
Automatic procedure for aeromechanic analysis of turbomachinery blade-rows
Andrea Agnolucci;
Andrea Agnolucci
a)
1
Department of Industrial Engineering, Università degli Studi di Firenze
, Via di Santa Marta 3, 50139 Firenze, Italy
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Federico Vanti;
Federico Vanti
1
Department of Industrial Engineering, Università degli Studi di Firenze
, Via di Santa Marta 3, 50139 Firenze, Italy
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Lorenzo Pinelli;
Lorenzo Pinelli
1
Department of Industrial Engineering, Università degli Studi di Firenze
, Via di Santa Marta 3, 50139 Firenze, Italy
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Andrea Arnone
Andrea Arnone
1
Department of Industrial Engineering, Università degli Studi di Firenze
, Via di Santa Marta 3, 50139 Firenze, Italy
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Andrea Agnolucci
1,a)
Federico Vanti
1
Lorenzo Pinelli
1
Andrea Arnone
1
1
Department of Industrial Engineering, Università degli Studi di Firenze
, Via di Santa Marta 3, 50139 Firenze, Italy
AIP Conf. Proc. 2191, 020003 (2019)
Citation
Andrea Agnolucci, Federico Vanti, Lorenzo Pinelli, Andrea Arnone; Automatic procedure for aeromechanic analysis of turbomachinery blade-rows. AIP Conf. Proc. 17 December 2019; 2191 (1): 020003. https://doi.org/10.1063/1.5138736
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