Imperial College London


Faculty of EngineeringDepartment of Mechanical Engineering

Research Fellow



+44 (0)20 7594 2243l.salles Website




Mr Peter Higgs +44 (0)20 7594 7078




556City and Guilds BuildingSouth Kensington Campus






BibTex format

author = {Vahdati, M and Salles, L},
title = {The effects of mistuning on Fan flutter},
url = {},
year = {2015}

RIS format (EndNote, RefMan)

AB - The aim of this paper is to study the effects ofmistuning on fan flutter. The computations are basedon a three-dimensional, whole assembly, timeaccurate,viscous, finite-volume compressible flowsolver. The unsteady flow cases are computed asReynolds-averaged Navier–Stokes, with the basicassumption that the frequencies of interest aresufficiently far away from the frequencies ofturbulent flow structures. The overall solutionmethod is implicit, with second-order accuracy inspace and time. A rig wide-chord fan blade, typical ofmodern civil designs, was used as the benchmarkgeometry for this study. There are 20 blades in thefan assembly. A random pattern frequency mistuningwas used in most of analysis undertaken in thispaper. The 1F mode shapes are the same for allmistuned blades. The objectives of this work are:1. To check if the introduction of mistuning wouldbring the experimental and computed flutterboundaries closer2. To explain how mistuning provide stability3. Establish a relationship between mistuning anddamping4. Provide a data base which can be used in futurefor testing simple mistuning models
AU - Vahdati,M
AU - Salles,L
PY - 2015///
TI - The effects of mistuning on Fan flutter
UR -
ER -