Steady-state CFD Simulations of a Small-scale Turbojet Engine from Idle to Cruise Conditions

Briones, Alejandro M.; Sykes, Joshua P.; Rankin, Brent A.; Caswell, Andrew W.

doi:10.2514/6.2020-2084

Cited by 6 publications

(2 citation statements)

References 9 publications

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“…A mixing plane approach was employed as the rotor-stator interface of the computational domain. To model turbulence, the k-ε turbulent model with scalable wall functions was used according to the previous verification (Briones et al, 2020(Briones et al, , 2021. The y-plus near the wall met the requirement for calculating the boundary velocity with scalable wall functions.…”

Section: D Cfd Models Of Rotating Componentsmentioning

confidence: 99%

Direct multi-fidelity integration of 3D CFD models in a gas turbine with numerical zooming method

Deng,

Wei,

et al. 2024

J. Glob. Power Propuls. Soc.

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Multi-fidelity simulation improves the simulation accuracy and captures more detailed information about aero engines under limited computing resources, which is implemented by coupling different levels of models using numerical zooming methods. However, there is an obvious problem in traditional zooming methods such as the iterative coupled zooming method or mini-map method: both the convergence and accuracy depend highly on the component general characteristic maps. Based on the investigation of a micro gas turbine, a direct zooming method (Cycle with CFD in it, CWCFD) is developed. It directly embeds the 3D CFD compressor and turbine model into a 0D component-level model without component general characteristic maps. Then, the CWCFD zooming method is compared with the traditional 0D component-level model in terms of the throttle characteristics of the micro gas turbine, and the experimental data of the ground test is performed to verify the effectiveness of the CWCFD zooming methods. The results indicate that the CWCFD zooming method matches well with the test data better than the traditional 0D component-level model.

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Section: D Cfd Models Of Rotating Componentsmentioning

confidence: 99%

Direct multi-fidelity integration of 3D CFD models in a gas turbine with numerical zooming method

Deng,

Wei,

et al. 2024

J. Glob. Power Propuls. Soc.

View full text Add to dashboard Cite

show abstract

“…In practice, component maps for turbomachinery are generated in three different ways: by component rig testing, aerodynamic analysis, or scaling existing maps. For microturbines, component maps are primarily generated with CFD tools, for example, for radial compressors [28,37,38], turbines [39] and combustors [40,41]. What is more, a complete CFD model of the gas path was developed recently, which simulates engine performance without component maps [42].…”

Section: Introductionmentioning

confidence: 99%

Model-Based Dynamic Performance Simulation of a Microturbine Using Flight Test Data

2022

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Microturbines can be used not only in models and education but also to propel UAVs. However, their wider adoption is limited by their relatively low efficiency and durability. Validated simulation models are required to monitor their performance, improve their lifetime, and to design engine control systems. This study aims at developing a numerical model of a micro gas turbine intended for prediction and prognostics of engine performance. To build a reliable zero-dimensional model, the available compressor and turbine maps were scaled to the available test bench data with the least squares method, to meet the performance of the engine achieved during bench and flight tests. A steady-state aeroengine model was implemented in the Gas turbine Simulation Program (GSP) and was compared with experimental operating points. The selected flight data were then used as input for the transient engine model. The exhaust gas temperature (EGT) and fuel flow were chosen as the two key parameters to validate the model, comparing the numerical predicted values with the experimental ones. The observed difference between the model and the flight data was lower than 3% for both EGT and fuel flow.

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Multi-fidelity simulation of aeroengine across wide operation range using auxiliary fully coupled method

Deng,

Xu,

et al. 2024

Aerospace Science and Technology

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Steady-state CFD Simulations of a Small-scale Turbojet Engine from Idle to Cruise Conditions

Cited by 6 publications

References 9 publications

Direct multi-fidelity integration of 3D CFD models in a gas turbine with numerical zooming method

Direct multi-fidelity integration of 3D CFD models in a gas turbine with numerical zooming method

Model-Based Dynamic Performance Simulation of a Microturbine Using Flight Test Data

Multi-fidelity simulation of aeroengine across wide operation range using auxiliary fully coupled method

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