On The Role of Higher-Order Terms in Local Piston Theory

Marius-Corné Meijer, Laurent Dala

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
21 Downloads (Pure)

Abstract

The use of second- and third-order classical piston theory [1] (CPT) is commonplace, with the role of the higher-order terms being well understood [2]. The advantages of local piston theory (LPT) relative to CPT have been demonstrated previously [3]. Typically, LPT has been used to perturb a mean-steady solution obtained from the Euler equations, and recently, from the Navier-Stokes equations [4]. The applications of LPT in the literature have been limited to first-order LPT [5–7]. The reasoning behind this has been that the dynamic linearization used assumes small perturbations. The present note clarifies the role of higher-order terms in LPT. It is shown that second-order LPT makes a non-zero contribution to the normal-force prediction, in contrast to second-order CPT.
Original languageEnglish
Pages (from-to)388-391
JournalJournal of Aircraft
Volume56
Issue number1
Early online date13 Sep 2018
DOIs
Publication statusPublished - 1 Jan 2019

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