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Improved local scale generic cycle model for aerothermodynamic simulations of gas turbine engines for propulsion

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Gurrola Arrieta, Manuel de Jesus et Botez, Ruxandra Mihaela. 2022. « Improved local scale generic cycle model for aerothermodynamic simulations of gas turbine engines for propulsion ». Designs, vol. 6, nº 5.

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Abstract

A local scale Aerothermodynamic Generic Cycle Model (AGCM) is proposed. The AGCM accounts for several improvements not considered in similar models, such as compressor bleed extraction for aircraft Environmental Control System (ECS), parasitic shaft power extraction, and the enthalpy of the fuel entering the combustor. The AGCM is intended for steady-state Design Point (DP) and Off-Design (OD) performance analyses. The underlying physics is presented for the DP model. The turbomachinery component maps scaling and the system of nonlinear equations necessary to define the OD model are thoroughly discussed. The AGCM is compared with an equivalent model developed in the Numerical Propulsion System Simulation (NPSS). The comparisons were performed considering a DP envisioned to approximate a General Electric CF34-8C5B1 engine. The average errors found in these comparisons for the Specific Fuel Consumption (SFC) and net thrust were −0.111% and 0.193%, respectively. Finally, the predictions of the absolute levels of performance intended for the -8C5B1 engine are compared with empirical correlations derived from a comprehensive turbofan engine database. It was found that the predictions of the AGCM are in agreement with the empirical correlations; the errors found in SFC and net thrust at cruise flight condition were −0.43% and 2.06%, respectively.

Item Type: Peer reviewed article published in a journal
Professor:
Professor
Botez, Ruxandra
Affiliation: Génie des systèmes
Date Deposited: 11 Nov 2022 21:00
Last Modified: 05 Jan 2023 19:56
URI: https://espace2.etsmtl.ca/id/eprint/25762

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