Frequency and Time Domain Methods for Forced Vibration Analysis of an Oscillating Cascade

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Abstract

Unsteady flow around an oscillating plate cascade has been computationally studied, aimed at examining the predictive ability of a non-linear frequency solution method for hydro-elasticity analysis compared with a standard analytical solution. The comparison of computational and analytical solutions for flow around an oscillating plate configuration demonstrates the capabilities of the frequency domain method compared with the analytical solution in capturing the unsteady flow. It also shows the great advantage of significant CPU time saving by the frequency methods over the nonlinear time method. This approach is based on casting the unsteady flow equations into a set of steady-like equations at a series of phases of a period of unsteadiness. So, One of the advantages of this method compared with other conventional time-linearized frequency domain methods is that any steady flow solution method can be easily used in a straightforward simple method for modelling unsteady perturbations.
Original languageEnglish
Title of host publicationASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
Subtitle of host publicationVolume 2: CFD and VIV
PublisherAmerican Society of Mechanical Engineers(ASME)
Number of pages8
Volume2
ISBN (Electronic)9780791849934
DOIs
Publication statusPublished - 19 Jun 2016
Externally publishedYes
EventASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering - Busan, Korea, Republic of
Duration: 19 Jun 201624 Jun 2016

Conference

ConferenceASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
CountryKorea, Republic of
CityBusan
Period19/06/1624/06/16

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