Unstructured Shock-Fitting Calculations of the Transonic Flow in a Gas Turbine Cascade

Aerotecnica Missili & Spazio

View Publication Info
 
 
Field Value
 
Title Unstructured Shock-Fitting Calculations of the Transonic Flow in a Gas Turbine Cascade
 
Creator Bonfiglioli, Aldo
Paciorri, Renato
 
Subject Aerodynamics; Turbomachinery
Shock-fitting
CFD
 
Description Even though shock-capturing techniques are the de-facto standard in the CFD simulation of turbo-machinery flows, the accurate estimation of shock induced losses in transonic flows can be severely hindered by the numerical errors that are generated along a captured shock and convected downstream. Indeed, and despite their widespread use, shock-capturing techniques are known to be plagued by a number of drawbacks that are inherent to the numerical details ofthe shock-capturing process.In recent works, the authors have developed a novel shock fitting technique for unstructured grids that has been applied to the computation of transonic, supersonic and hypersonic flows in both two and three space dimensions. In this paper, the proposed technique is applied to two-dimensional, transonic flows around an isolated profile and in a gasturbine cascade.It is shown that the use of unstructured meshes allows to relieve most of the algorithmic difficulties that have contributed to the dismissal of the shock-fitting technique in the framework of structured meshes. Moreover, it is confirmed that, in contrast to shock-capturing, shock-fitting allows to obtain very accurate solution on coarse meshes.
 
Publisher Associazione Italiana di Aeronautica e Astronautica (AIDAA)
 
Contributor
 
Date 2019-01-24
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
Numerical: simulation
 
Format application/pdf
 
Identifier http://131.114.27.37/index.php/AMS/article/view/351
10.19249/ams.v97i4.351
 
Source Aerotecnica Missili & Spazio; Vol 97, No 4 (2018); 189-197
0365-7442
 
Language eng
 
Relation http://131.114.27.37/index.php/AMS/article/view/351/pdf
 
Rights Copyright (c) 2019 Aerotecnica Missili & Spazio
 

Contact Us

The PKP Index is an initiative of the Public Knowledge Project.

For PKP Publishing Services please use the PKP|PS contact form.

For support with PKP software we encourage users to consult our wiki for documentation and search our support forums.

For any other correspondence feel free to contact us using the PKP contact form.

Find Us

Twitter

Copyright © 2015-2018 Simon Fraser University Library