Non-ideal Effects in Compressible Swirling Flows

Book chapter (2021)

Authors

F. Tosto Flight Performance and Propulsion - Aerospace Engineering
A. Giuffré Flight Performance and Propulsion - Aerospace Engineering
Piero Colonna Flight Performance and Propulsion - Aerospace Engineering
M. Pini Flight Performance and Propulsion - Aerospace Engineering
Research Group
Flight Performance and Propulsion (Aerospace Engineering) (TU Delft)
Copyright: © 2021 F. Tosto, A. Giuffré, Piero Colonna, M. Pini
DOI: https://doi.org/10.1007/978-3-030-69306-0_5
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Published Date

2021

Language

English

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Faculty

Aerospace Engineering

Department

Flow Physics and Technology

Research Group

Flight Performance and Propulsion

Abstract

In this work we examine the behavior of non-ideal compressible swirling flows. Based on a first-principle analysis, we derive a generalized expression of the corrected flow per unit area as function of the isentropic exponent, characteristic Mach numbers, and swirl parameter. The calculated trends of the corrected flow with respect to these parameters, validated against results from high-fidelity computations, are used to infer physical insights on the behavior of swirling flows in turbomachinery cascades. The results suggest that fluid flows characterized by low values of the isentropic exponent show swirling behaviors that are substantially different than those exhibited by perfect gases. Ultimately, this can make the design of efficient turbomachines operating close to the critical point particularly challenging.

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