Adaptive simulations of detonation propagation in 90-degree bent tubes

Yuan, Xueqiang; Zhang, Jin; Lin, Zhiyong; Cai, Xiaodong

doi:10.1016/j.ijhydene.2016.07.130

Cited by 16 publications

(6 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Yuan et al. 12 simulated the detonation propagation in 90° bent tubes. The propagation mode, the detonation decoupled and restored to stable propagation, and effects of curvature radius on detonation propagation were investigated.…”

Section: Introductionmentioning

confidence: 99%

“…The geometric shapes of the stabilizing curved detonation waves were calculated by equation, which were in good agreement with those of their experimental results. Yuan et al 12 simulated the detonation propagation in 90 bent tubes. The propagation mode, the detonation decoupled and restored to stable propagation, and effects of curvature radius on detonation propagation were investigated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Propagation characteristics of rotating detonation wave in plane–radial structure with different pressure conditions

Xia

Zhuo

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

This paper simulates the propagation characteristics of rotating detonation wave in the plane–radial structure for mixtures of 2H2 + O2 + 3.76N2. Two-dimensional numerical simulation was modeled, and two kinds of typical flow field and corresponding operating range were obtained under various pressure conditions. Due to the influence of curvature, the detonation wave is strengthened near the outer concave boundary and weakened near the inner convex one. The pressure ratio was varied from 1.6 to 10 by varying both stagnation and back pressure for detonation parameters and flow parameters. It is found that these parameters are dependent only on stagnation pressure for higher pressure ratio. While the pressure ratio is low, the back pressure also has an effect on them. The detonation wave height initially increases and then decreases as stagnation pressure increases, and the pressure ratio has a significant effect on it for lower pressure ratio. The inlet block ratio varies slightly from 14% to 21%. The exit average Mach number has small fluctuations between 0.89 and 1.05. The exit supersonic flow ratio varies from 14% to 74%, and the peak value is gained when pressure ratio is 6. The exit pressure amplifying ratio varies from 1.45 to 1.95, and the maximum value is obtained when pressure ratio is 2.5.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Propagation characteristics of rotating detonation wave in plane–radial structure with different pressure conditions

Xia

Zhuo

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part G:

View full text Add to dashboard Cite

show abstract

“…For this ideal flow model, the CJ detonation Mach number can be obtained by (10) Details of the two-step induction-reaction kinetic model used in this work are described in [42]. The first step is a thermally neutral induction step with no energy release.…”

Section: Computational Modelmentioning

confidence: 99%

“…1(a), a circumferentially propagating detonation wave experiences lateral expansion in the axial direction of the engine under the confinement of two cylindrical chamber walls. To better examine the effect of wave-wall interaction on the propagation behavior in threedimensional RDE geometries, some recent studies [5][6][7][8][9][10][11][12] have focused on detonation propagation in a two-dimensional curved channel, see Fig. 1(b).…”

mentioning

confidence: 99%

Numerical study of cellular detonation wave reflection over a cylindrical concave wedge

Yuan

Zhang

et al. 2019

Combustion and Flame

Self Cite

View full text Add to dashboard Cite

“…In daily life, combustible gas pipelines often have the connection sections of bends which is more complex, while experimental research and numerical simulation of the propagation mechanism in pipe have been reported in recent years, but there are still many deficiencies to be further studied [15][16][17][18]. The cellular structure evolution of detonation wave in bends is more complex, when the detonation wave go through the bend, different curvature leads to different cellular structure, pressure distribution and chemical reaction morphology.…”

Section: Introductionmentioning

confidence: 99%

The Influence of Pipe Bending Curvature on H2-O2 Gaseous Detonation Wave Front

Zhao

et al. 2021

Applied Sciences

View full text Add to dashboard Cite

The influence of different bend curvatures on the detonation wave propagation was analyzed by an advanced numerical simulation system. The mechanism of propagation properties is revealed by cellular structure, internal and external boundary pressure distribution, propagation process of detonation wave and chemical reaction. The cellular structure and detonation wave front of bend with different curvature are very different. The simulation results show that the detonation wave with regular cell structure propagating through the curved parts induces detonation cell size increased by diffraction near the inner wall while detonation reflected on the bottom surface resulting in decrease of cell size. Detonation wave was affected by the rarefaction wave and compression wave in the bent pipe. The pressure distribution of the bend shows that the peak pressure in the 450 curvature is the largest, which should be paid more attention in industrial design. The chemical reaction could indicate the propagation characteristics of detonation wave, and different propagation characteristics have different profiles of chemical components.

show abstract

Adaptive simulations of detonation propagation in 90-degree bent tubes

Cited by 16 publications

References 32 publications

Propagation characteristics of rotating detonation wave in plane–radial structure with different pressure conditions

Propagation characteristics of rotating detonation wave in plane–radial structure with different pressure conditions

Numerical study of cellular detonation wave reflection over a cylindrical concave wedge

The Influence of Pipe Bending Curvature on H2-O2 Gaseous Detonation Wave Front

Contact Info

Product

Resources

About