A robust one-dimensional approach for the performance evaluation of turbines driven by pulsed detonation combustion

Asli, Majid; Garan, Niclas; Neumann, Nicolai; Stathopoulos, Panagiotis

doi:10.1016/j.enconman.2021.114784

Cited by 6 publications

(8 citation statements)

References 24 publications

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“…The unsteady 1D Euler model is used in the current work. This approach was evaluated for the turbine by Asli et al [20]. As stated before, this work is a further extension of the turbine model which includes turbine blade cooling by adding two new source terms for coolant flow.…”

Section: D Euler Modelmentioning

confidence: 99%

“…The inlet boundary condition is the time-dependent total temperature and pressure from the PDC model and the outlet boundary is fixed with a static pressure of 3.63 bar. The mesh size of ∆x = 0.5 mm is chosen for the domain, which is the same as in [20], for which the validation of the unsteady Euler solver was conducted by comparing it with unsteady 3D CFD. As the length of the domain is L = 0.36 m, the entire domain is divided into 721 cells.…”

Section: D Euler Modelmentioning

confidence: 99%

“…The equation used for the modeling of PDC tubes is shown in Equation (11). The 1D PDC tube modeling and the configuration are explained in detail by Asli et al [20].…”

Section: Pulsed Detonation Combustor Modelmentioning

confidence: 99%

“…As an unsteady method, 1D Euler methodology is given high importance as it provides a fast and reliable way to assess the performance of turbomachinery coupled with PGC. Asli et al [20,21] studied the turbine interaction with PDC using the 1D unsteady Euler model and the coupled mean line analysis. The unsteady 1D Euler solver showed a good agreement when compared with unsteady 3D CFD, implying the use of a 1D solver for further turbine analysis with low computation effort.…”

Section: Introductionmentioning

confidence: 99%

“…One of the unique aspects of this paper is to implement the cooling of turbine blades in the 1D unsteady Euler model and compare it with the 0D turbine blade cooling model and the unsteady 3D CFD model. For these simulations, the boundary conditions are provided by the existing in-house PDC unsteady 1D Euler model [20]. To the best of the authors' knowledge, this paper is the first to use film cooling in the unsteady 1D Euler turbine model.…”

Section: Introductionmentioning

confidence: 99%

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Film Cooling Modeling in a Turbine Working under the Unsteady Exhaust Flow of Pulsed Detonation Combustion

Varatharajulu Purgunan,

Asli,

Nacci

et al. 2024

Energies

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Pressure gain combustors (PGCs) have demonstrated significant advantages over conventional combustors in gas turbine engines by increasing the thermal efficiency and reducing the pollution emission level. PGCs use shock waves to transfer energy which contributes to the increase in outlet total pressure. One of the major obstacles in the actual implementation of PGCs in the gas turbine cycle is the exploitation of the highly unsteady flow of the combustor outlet with the downstream turbine. Because of the higher outlet temperature from the PGCs, the turbine blade cooling becomes essential. Due to the highly fluctuating unsteady flow of PGCs, 3D CFD simulation of turbines becomes very expensive. In this work, an alternative approach of using a 1D unsteady Euler model for the turbine is proposed. One of the novel aspects of this paper is to implement the turbine blade cooling in the unsteady 1D Euler model. The main parameters required for the turbine blade cooling are the cooling air mass flow rate, temperature, and pressure. Due to the introduction of coolant flow, the blades are no longer adiabatic and the mass flow rate across the turbine is not constant. Comparing the 1D Euler results against zero-dimensional calculation and 3D CFD approach showed a very good match for both steady and unsteady simulations confirming the applicability of the 1D method.

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Section: D Euler Modelmentioning

confidence: 99%

Section: D Euler Modelmentioning

confidence: 99%

“…The equation used for the modeling of PDC tubes is shown in Equation (11). The 1D PDC tube modeling and the configuration are explained in detail by Asli et al [20].…”

Section: Pulsed Detonation Combustor Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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