Numerical Study of the Effects of Injection Conditions on Rotating Detonation Engine Propulsive Performance

Shi, Lisong; Fan, E; Shen, Hua; Wen, Chih-Yung; Shang, Shuai; Hu, Hongbo

doi:10.3390/aerospace10100879

Cited by 6 publications

(2 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There have been many studies on the mechanism of single ablation of C/SiC composites, but many high-temperature environments are not continuous. For example, the high-temperature environment of RDE is periodic [27][28][29]. Therefore, studying cyclic ablation can better reveal the ablation performance of materials under this working condition.…”

Section: Introductionmentioning

confidence: 99%

Cyclic Ablation Properties of C/SiC-ZrC Composites

Ge,

Zhang,

Zhang

et al. 2024

Aerospace

View full text Add to dashboard Cite

To reveal the ablation performance of C/SiC-ZrC composites under different ablation modes, C/SiC-ZrC composites were prepared using chemical vapor deposition, precursor infiltration, and pyrolysis. Single ablation and cyclic ablation tests were conducted on the C/SiC-ZrC composites using an oxyacetylene flame, in order to obtain ablation parameters, as well as macroscopic and microscopic ablation morphology for the different ablation modes. The results show that the linear ablation rate and mass ablation rate of different ablation modes decrease with increasing time. The linear ablation rate and mass ablation rate of cyclic ablation are 12% and 24.2% lower than those of single ablation. Within the same ablation time, the C/SiC-ZrC composites subjected to cyclic ablation exhibit shallower and more evenly distributed pits, caused by high-temperature airflow ablation. The material surface has a white oxide layer composed of SiO2 and ZrO2, and the carbon fibers inside are wrapped by oxide particles, enhancing the ablation resistance of C/SiC-ZrC composites.

show abstract

Section: Introductionmentioning

confidence: 99%

Cyclic Ablation Properties of C/SiC-ZrC Composites

Ge,

Zhang,

Zhang

et al. 2024

Aerospace

View full text Add to dashboard Cite

show abstract

“…[28] and Liu [29] experimentally studied the effect of reactant injection and mixing on detonation wave propagation in an optically accessible linear detonation combustor. Shi et al [30] computationally studied the effect of injection pattern in terms of location and width of injection slots on the wave structure and performance of the RDE. Wang et al [31] studied computationally the effect of ozone addition to a hydrogen-air mixture on the multiwave operation process of the RDE.…”

Section: Introductionmentioning

confidence: 99%

Mild Detonation Initiation in Rotating Detonation Engines: An Experimental Study of the Deflagration-to-Detonation Transition in a Semiconfined Flat Slit Combustor with Separate Supplies of Fuel and Oxidizer

Shamshin,

Ivanov,

Aksenov

et al. 2023

Aerospace

View full text Add to dashboard Cite

Rotating detonation engines (RDEs) are considered to be promising thrusters for aerospace propulsion. Detonation initiation in RDEs can be accompanied by a destructive explosion of an excess volume of the fuel mixture in the combustor. To exclude this phenomenon, a “mild” rather than “strong” initiation of detonation is required. For the mild initiation of detonation in RDEs, it is necessary to ignite a mixture of a certain minimum volume sufficient for deflagration-to-detonation transition (DDT). In this study, the critical conditions for detonation initiation through DDT in a semiconfined slit combustor simulating the RDE combustor with a separate supply of ethylene and oxygen diluted with nitrogen (from 0 to 40%) were obtained experimentally. It turned out that for the mild initiation of detonation, it is necessary to ignite the mixture upon reaching the critical (minimum) height of the combustible mixture layer. Thus, for the mild initiation of detonation in the undiluted C2H4 + 3O2 mixture filling such a slit combustor, the height of the mixture layer must exceed the slit width by approximately a factor of 12. In terms of the transverse size of the detonation cell λ the minimum layer height of such mixtures in experiments is ~150λ. Compared to the experiments with the premixed composition, the critical height of the layer is 20% larger, which is explained by the finite rate of mixing. As the degree of oxygen dilution with nitrogen increases, the critical height of the layer increases, and the role of finite rate mixing decreases: the results no longer depend on the method of combustible mixture formation.

show abstract

Analysis of coupling supersonic turbine stage with rotating detonation combustor under different turbine parameters

Su,

Wen

2024

Aerospace Science and Technology

View full text Add to dashboard Cite

Numerical Study of the Effects of Injection Conditions on Rotating Detonation Engine Propulsive Performance

Cited by 6 publications

References 50 publications

Cyclic Ablation Properties of C/SiC-ZrC Composites

Cyclic Ablation Properties of C/SiC-ZrC Composites

Mild Detonation Initiation in Rotating Detonation Engines: An Experimental Study of the Deflagration-to-Detonation Transition in a Semiconfined Flat Slit Combustor with Separate Supplies of Fuel and Oxidizer

Analysis of coupling supersonic turbine stage with rotating detonation combustor under different turbine parameters

Contact Info

Product

Resources

About