Imperial College London
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DrSinaStapelfeldt

Faculty of Engineering, Department of Mechanical Engineering

Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 7076s.stapelfeldt

 
 
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Assistant

 

Mr Peter Higgs +44 (0)20 7594 7078

 
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Location

 

556City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Stapelfeldt:2015:10.2514/1.J053888,
author = {Stapelfeldt, SC and Di, Mare L},
doi = {10.2514/1.J053888},
journal = {AIAA Journal: devoted to aerospace research and development},
pages = {3049--3062},
title = {Reduced passage method for multirow forced response computations},
url = {http://dx.doi.org/10.2514/1.J053888},
volume = {53},
year = {2015}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This paper presents a time-domain Fourier method for modeling steady and unsteady nonaxisymmetric flows in turbomachinery on a reduced computational domain. The method extends well-established single-passage multirow methods, which efficiently model periodic unsteadiness in single stages, to assemblies with stationary circumferential perturbations with periodicity different from the blade count. Such perturbations are caused, for example, by rotor–rotor/stator–stator interaction or geometric circumferential variations. The method is therefore suitable to study low-engine-order forcing problems, flow past nonuniform assemblies, and clocking problems. The proposed method solves the flow inside several discrete passages, located at different circumferential positions, using a time-accurate scheme. Boundary conditions at the azimuthal and interrow surfaces are approximated via time–space Fourier series and couple the individual passages. The reduced passage model is validated against the whole annulus solution for three test cases: 1) a row of outlet guide vanes with stagger pattern, 2) a high-pressure turbine stage with throat area variation in the stator, and 3) a 1.5-stage compressor. It is demonstrated that the time-domain Fourier method yields results equivalent to the whole annulus model but at a much reduced computational cost.
AU  - Stapelfeldt,SC
AU  - Di,Mare L
DO  - 10.2514/1.J053888
EP  - 3062
PY  - 2015///
SN  - 0001-1452
SP  - 3049
TI  - Reduced passage method for multirow forced response computations
T2  - AIAA Journal: devoted to aerospace research and development
UR  - http://dx.doi.org/10.2514/1.J053888
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000361468800021&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://arc.aiaa.org/doi/10.2514/1.J053888
VL  - 53
ER  -
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