Considerations and complications with "first principles" dynamic modelling of industrial compressors

Readily available processing hardware and "off-the-shelf" (OTS) simulation software has made "high fidelity" first principles models of both steady and transient states, for both axial and centrifugal industrial compressors, relatively easy to construct. These high-fidelity model...

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Autores principales:	James Jacoby, Thomas Bailey, Vitalii Zharikov
Formato:	article
Lenguaje:	EN RU UK
Publicado:	National Aerospace University «Kharkiv Aviation Institute» 2021
Materias:	compressor model high fidelity first principles industrial compressors dynamic simulation compressor surge compressor stonewall choke flow steady state transient surge event recycle vent reverse rotation Motor vehicles. Aeronautics. Astronautics TL1-4050
Acceso en línea:	https://doaj.org/article/e0799c6f3ec74c088b6f354e4139aba4
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spelling	oai:doaj.org-article:e0799c6f3ec74c088b6f354e4139aba42021-11-09T07:54:20ZConsiderations and complications with "first principles" dynamic modelling of industrial compressors1727-73372663-221710.32620/aktt.2021.5.03https://doaj.org/article/e0799c6f3ec74c088b6f354e4139aba42021-10-01T00:00:00Zhttp://nti.khai.edu/ojs/index.php/aktt/article/view/1545https://doaj.org/toc/1727-7337https://doaj.org/toc/2663-2217Readily available processing hardware and "off-the-shelf" (OTS) simulation software has made "high fidelity" first principles models of both steady and transient states, for both axial and centrifugal industrial compressors, relatively easy to construct. These high-fidelity models are finding their way into "real-time. digital twin" performance monitors, front-end engineering design, and post-design – pre-construction compressor performance evaluation. The compressor models are useful for reliably demonstrating the compressor and – to some degree, based on the complexity of the model – process response to various operating conditions. Once the model is constructed, it is trivial to run a "what-if" analysis of compressor performance to answer questions related to (a) recommendations or validation of the recycle/vent valve size and actuation speed, (b) general piping layout and sizing around the compressor, (c) and hot gas bypass requirements, to name a few. This paper takes a practical approach in discussing the compressor and process parameters necessary for building these dynamic "high-fidelity" industrial-compressor models. We identify compressor inputs and compressor responses that are faithfully modeled by first-principle equations available in the simulation software and those that typically require a compromise between an "ab initio" and data-fitting approximation. We discuss the simulation's tendency to overstate pressure excursions during surge events and understate the compressor operation in the "stonewall" region. We also discuss using the simulator software's compressor-stage enthalpy calculations to predict and quantify the compressor train reverse rotation. We use our broad experience and understanding of the compressor operation and simulation and our experience with the AVEVA™ Dynamic-Simulation "OTS" simulation software as the basis for this discussion.James JacobyThomas BaileyVitalii ZharikovNational Aerospace University «Kharkiv Aviation Institute»articlecompressor modelhigh fidelityfirst principlesindustrial compressorsdynamic simulationcompressor surgecompressor stonewallchoke flowsteady statetransientsurge eventrecycleventreverse rotationMotor vehicles. Aeronautics. AstronauticsTL1-4050ENRUUKАвіаційно-космічна техніка та технологія, Vol 0, Iss 5, Pp 24-32 (2021)
institution	DOAJ
collection	DOAJ
language	EN RU UK
topic	compressor model high fidelity first principles industrial compressors dynamic simulation compressor surge compressor stonewall choke flow steady state transient surge event recycle vent reverse rotation Motor vehicles. Aeronautics. Astronautics TL1-4050
spellingShingle	compressor model high fidelity first principles industrial compressors dynamic simulation compressor surge compressor stonewall choke flow steady state transient surge event recycle vent reverse rotation Motor vehicles. Aeronautics. Astronautics TL1-4050 James Jacoby Thomas Bailey Vitalii Zharikov Considerations and complications with "first principles" dynamic modelling of industrial compressors
description	Readily available processing hardware and "off-the-shelf" (OTS) simulation software has made "high fidelity" first principles models of both steady and transient states, for both axial and centrifugal industrial compressors, relatively easy to construct. These high-fidelity models are finding their way into "real-time. digital twin" performance monitors, front-end engineering design, and post-design – pre-construction compressor performance evaluation. The compressor models are useful for reliably demonstrating the compressor and – to some degree, based on the complexity of the model – process response to various operating conditions. Once the model is constructed, it is trivial to run a "what-if" analysis of compressor performance to answer questions related to (a) recommendations or validation of the recycle/vent valve size and actuation speed, (b) general piping layout and sizing around the compressor, (c) and hot gas bypass requirements, to name a few. This paper takes a practical approach in discussing the compressor and process parameters necessary for building these dynamic "high-fidelity" industrial-compressor models. We identify compressor inputs and compressor responses that are faithfully modeled by first-principle equations available in the simulation software and those that typically require a compromise between an "ab initio" and data-fitting approximation. We discuss the simulation's tendency to overstate pressure excursions during surge events and understate the compressor operation in the "stonewall" region. We also discuss using the simulator software's compressor-stage enthalpy calculations to predict and quantify the compressor train reverse rotation. We use our broad experience and understanding of the compressor operation and simulation and our experience with the AVEVA™ Dynamic-Simulation "OTS" simulation software as the basis for this discussion.
format	article
author	James Jacoby Thomas Bailey Vitalii Zharikov
author_facet	James Jacoby Thomas Bailey Vitalii Zharikov
author_sort	James Jacoby
title	Considerations and complications with "first principles" dynamic modelling of industrial compressors
title_short	Considerations and complications with "first principles" dynamic modelling of industrial compressors
title_full	Considerations and complications with "first principles" dynamic modelling of industrial compressors
title_fullStr	Considerations and complications with "first principles" dynamic modelling of industrial compressors
title_full_unstemmed	Considerations and complications with "first principles" dynamic modelling of industrial compressors
title_sort	considerations and complications with "first principles" dynamic modelling of industrial compressors
publisher	National Aerospace University «Kharkiv Aviation Institute»
publishDate	2021
url	https://doaj.org/article/e0799c6f3ec74c088b6f354e4139aba4
work_keys_str_mv	AT jamesjacoby considerationsandcomplicationswithfirstprinciplesdynamicmodellingofindustrialcompressors AT thomasbailey considerationsandcomplicationswithfirstprinciplesdynamicmodellingofindustrialcompressors AT vitaliizharikov considerationsandcomplicationswithfirstprinciplesdynamicmodellingofindustrialcompressors
_version_	1718441252608802816

Considerations and complications with "first principles" dynamic modelling of industrial compressors

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