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A fast approach for unsteady compressor performance simulation under boundary condition caused by pressure gain combustion

Neumann, Nicolai and Asli, Majid and Garan, Niclas and Peitsch, Dieter and Stathopoulos, Panagiotis (2021) A fast approach for unsteady compressor performance simulation under boundary condition caused by pressure gain combustion. Applied Thermal Engineering, 196, p. 117223. Elsevier. doi: 10.1016/j.applthermaleng.2021.117223. ISSN 1359-4311.

Full text not available from this repository.

Official URL: https://www.sciencedirect.com/science/article/pii/S135943112100661X

Abstract

The constant pressure combustion of the Joule cycle is a dominant source of losses in gas turbines. One possible improvement is pressure gain combustion through pulse detonation combustion. However, the total pressure increase is the result of a transient periodic process that can adversely affect the performance of adjoining turbo components. The thermodynamic benefits of pressure gain combustion can thus be undermined by low efficiencies of compressor and turbine. In order to account for such unsteady effects early in the design process, suitable methods are essential. Given 3D-CFD simulations undue computational demands, an approach with low computation resources is required for first-order estimates. This paper introduces such an approach based on a 1D-Euler method and demonstrates its applicability. A compressor is simulated with 3D-CFD, which serves as a reference, as well as with the 1D-Euler code employing unsteady outlet boundary conditions that approximate those encountered with pulse detonation combustion. The findings suggest that the 1D-Euler code is able to accurately capture the transient compressor behaviour. Though the relative pressure amplitude at the compressor outlet of 3.6 is attenuated by 90 up to the compressor inlet, it still results in a compressor isentropic efficiency loss of 0.8 percentage points.

Item URL in elib:https://elib.dlr.de/147766/
Document Type:Article
Title:A fast approach for unsteady compressor performance simulation under boundary condition caused by pressure gain combustion
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Neumann, NicolaiUNSPECIFIEDUNSPECIFIED
Asli, MajidUNSPECIFIEDUNSPECIFIED
Garan, NiclasUNSPECIFIEDUNSPECIFIED
Peitsch, DieterUNSPECIFIEDUNSPECIFIED
Stathopoulos, PanagiotisUNSPECIFIEDUNSPECIFIED
Date:2021
Journal or Publication Title:Applied Thermal Engineering
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:196
DOI :10.1016/j.applthermaleng.2021.117223
Page Range:p. 117223
Publisher:Elsevier
ISSN:1359-4311
Status:Published
Keywords:Pressure gain combustion, Unsteady compressor simulation, 1D-Euler
HGF - Research field:Energy
HGF - Program:Energy System Design
HGF - Program Themes:Digitalization and System Technology
DLR - Research area:Energy
DLR - Program:E SY - Energy System Technology and Analysis
DLR - Research theme (Project):E - Energy System Technology, E - Gas Turbine
Location: Cottbus
Institutes and Institutions:Institute of Low-Carbon Industrial Processes
Deposited By: Stathopoulos, Panagiotis
Deposited On:17 Dec 2021 16:58
Last Modified:06 May 2022 13:07

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