Parametric Numerical Study on the Performance Characteristics of a Micro-Wave Rotor Gas Turbine

Tuechler, Stefan; Copeland, Colin

doi:10.38036/jgpp.12.1_10

Cited by 4 publications

(1 citation statement)

References 22 publications

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“…The used numerical model is similar to the wave rotor models introduced by Paxson et al [38,48,49], Fatsis et al [40,50], Nagashima and Okamoto [5,39,51] and has been extended to account for non-axial channel shape and torque extraction. The code has has been validated with experimental data in [52] and its foundations have been further documented in [53]. Therefore, only a brief introduction shall be given here.…”

Section: Numerical Campaignmentioning

confidence: 99%

Experimental and numerical assessment of an optimised, non-axial wave rotor turbine

Tüchler

Copeland

2020

Applied Energy

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Section: Numerical Campaignmentioning

confidence: 99%

Experimental and numerical assessment of an optimised, non-axial wave rotor turbine

Tüchler

Copeland

2020

Applied Energy

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Experimental study on the matching relationship of gas wave oscillation tube under liquid-carrying condition

Liu,

Wang,

et al. 2024

International Journal of Refrigeration

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Wave Reformer Channel Shape Design for Enhanced Hydrogen Pyrolysis

Madiot,

Tüchler,

Akbari

et al. 2024

Journal of Engineering for Gas Turbines and Power

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A wave reformer utilizes shock wave heating resulting from pressure exchange between a driver and a driven gas to initiate a thermal decomposition reaction. Although widely applicable to many reactions, this paper will focus on the thermal pyrolysis of methane to produce hydrogen and solid (black) carbon. It uses wave rotor technology that has been applied to other applications but developed specifically here for high-temperature pyrolysis by New Wave Hydrogen Inc. (NWH). This research uses a quasi-two-dimensional model implemented in Ansys Fluent to study the influence of new channel design features on the unsteady flow field and performance characteristics of the wave reformer. The primary objective of the work is to investigate the impact of variable area channel design on peak temperature (a proxy for thermal pyrolysis), which has received limited attention in existing literature. The model numerically solves the three-dimensional, compressible, and unsteady Navier-Stokes equations, employing the k- ω -SST turbulence model for closure. The channel's curvature is controlled with Sigmoid functions to ensure a smooth area transition. The Q2D results reveal that as the fluid traverses the converging channel, its temperature increases due to the rising internal energy, necessary for enhancing hydrogen yields. However, an over-reduction in channel cross-section results in a decrease in the driven mass flow rate, subsequently lowering the mass flow ratio. This work shows that, above a given threshold, there is a significant benefit to implementing converging channel designs in wave reformers for enhanced shock heating.

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Parametric Numerical Study on the Performance Characteristics of a Micro-Wave Rotor Gas Turbine

Cited by 4 publications

References 22 publications

Experimental and numerical assessment of an optimised, non-axial wave rotor turbine

Experimental and numerical assessment of an optimised, non-axial wave rotor turbine

Experimental study on the matching relationship of gas wave oscillation tube under liquid-carrying condition

Wave Reformer Channel Shape Design for Enhanced Hydrogen Pyrolysis

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