Development and Validation of a Model for Centrifugal Compressors in Reversed Flow Regimes
نویسندگان
چکیده
Abstract Turbochargers are widely used to help reduce the environmental impact of automotive engines. However, a limiting factor for turbochargers is compressor surge. Surge an instability that induces pressure and flow oscillations often damages turbocharger its installation. Most predictions surge limit based on low-order models, such as Moore–Greitzer model. These models tend rely characteristic curve created by extrapolating constant speed lines steady-state map into negative mass region. there little validation these assumptions in public literature. In this article, we develop further first-principles model presented Powers, K., Brace, C., Budd, Copeland, & Milewski, P., 2020, “Modeling Axisymmetric Centrifugal Compressor Characteristics From First Principles,” J. Turbomachinery, 142(9), with particular emphasis reverse flow. We then perform experiments using 58 mm diameter centrifugal provided Cummins Turbo Technologies, where feed air direction though while impeller spinning forward obtain data region map. This demonstrated experimentally stable operating regime. The recorded showed good match theoretical developed article. also identified change behavior increased, which, authors’ knowledge, has not been observed any previously published experimental work.
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ژورنال
عنوان ژورنال: Journal of turbomachinery
سال: 2021
ISSN: ['0889-504X', '1528-8900']
DOI: https://doi.org/10.1115/1.4050668