Massively Parallel Simulations of Kerosene-Fueled Model Scramjet

Le, Jialing; Yang, Shaoqiong; Liu, Weixiong; Xing, Jianwen; Aerodynamics, China

doi:10.2514/6.2005-3318

Cited by 14 publications

(4 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The simulations in this article were conducted using the in-house CFD code AHL3D. This AHL3D code uses a three-dimensional, parallel, finite volume flow solver solving the compressible Navier Stokes equations on multi-block, structured meshes and has been validated by a vast array of applications (e.g., see Le, Yang, Liu, & Xing, 2005). The major methods involved in this article are introduced as follows.…”

Section: Methodsmentioning

confidence: 99%

Assessment of the IDDES method acting as wall-modeled LES in the simulation of spatially developing supersonic flat plate boundary layers

Han

Ding

et al. 2017

Engineering Applications of Computational Fluid Mechanics

Self Cite

View full text Add to dashboard Cite

The widely used improved delayed detached eddy simulation (IDDES) method is supposed to accurately predict the mean skin friction when it acts as wall-modeled large eddy simulation (WMLES), as claimed by the original authors. This property has been validated in subsonic flows but not in supersonic flows. In this article, IDDES acting as WMLES was assessed in the simulation of supersonic flat plate boundary layers, accompanied by two other hybrid Reynolds averaged Navier Stokes (RANS)/large eddy simulation (LES) methods which were also employed as WMLES, namely zonal detached eddy simulation (ZDES) and a hybrid RANS/LES method with the blending function proposed by Edwards and Choi (HRLMEC), for comparison. The underprediction of mean skin friction is existent in the results of IDDES but negligible in the results of ZDES and HRLMEC when all other settings are identical, presenting a contrast to the original idea of IDDES and some former research in subsonic flows. With the analysis of the shear stress, the underprediction of mean skin friction of IDDES is attributed to the underprediction of total Reynolds stress and turbulent kinetic energy production in the inner layer. Further research shows that, as for the present supersonic flow cases, IDDES can be capable of precisely predicting skin friction, but only if under the same condition the relevant LES, which uses the same subgrid-scale model, can precisely predict skin friction. This suggests that the problems met by IDDES may be essentially due to the intrinsic difficulty of LES to resolve the inner layer of a supersonic boundary layer: when resolving the inner layer of a supersonic boundary layer, LES should be tuned subtly and needs high computational cost, and may be damaged by any faulty factor, including but not limited to numerical resolution.

show abstract

Section: Methodsmentioning

confidence: 99%

Assessment of the IDDES method acting as wall-modeled LES in the simulation of spatially developing supersonic flat plate boundary layers

Han

Ding

et al. 2017

Engineering Applications of Computational Fluid Mechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…In this study, the inhouse CFD code AHL3D [15,16] software was used for computation. A fully coupled form of species conservation equations and Reynolds averaged Navier-Stokes equations were used as a governing equation set for a chemically reacting supersonic viscous flow.…”

Section: Methodsmentioning

confidence: 99%

“…Kok's modified k-ω TNT two-equation turbulence mode [17] was used in turbulence simulations. The kerosene reaction mechanism modified version of CARDC's chemistry mechanism [16], involving 12 elementary reaction steps and 10 reaction species was used. The effects of multi-phase had already been considered in our previous work [18], and we will not discuss it in this paper.…”

Section: Methodsmentioning

confidence: 99%

Experimental and computational study on combustion performance of a kerosene fueled dual-mode scramjet engine

Tian

Xiao

Zhang

et al. 2015

Aerospace Science and Technology

Self Cite

View full text Add to dashboard Cite

“…In this study, the in-house CFD code AHL3D software was used for computation. The CFD code and its physical and chemical models had already been validated in [9,10]. A fully coupled form of species conservation equations and Reynolds averaged Navier-Stokes equations were used as a governing equation set for a chemically reacting supersonic viscous flow.…”

Section: Methodsmentioning

confidence: 99%

Study on the Effect of Air Throttling on Flame Stabilization of an Ethylene Fueled Scramjet Combustor

Tian

Yang

2015

International Journal of Aerospace Engineering

Self Cite

View full text Add to dashboard Cite

The effect of air throttling on flame stabilization of an ethylene fueled scramjet combustor was investigated by numerical simulation and experiments in this paper. The results were obtained under the inflow condition with Mach number of 2.0, total temperature of 900 K, total pressure of 0.8 MPa, and total equivalence ratio of 0.5. The shock train generated by air throttling had a big effect on the flow structure of the scramjet combustor. Compared with the combustor without air throttling, the flow field with air throttling had a lower velocity and higher pressure, temperature, and vortices intensity. Air throttling was an effective way to achieve flame stabilization; the combustion in the combustor without air throttling was nearly blowout. In the experiment, the combustion was nearly blowout with air throttling location of 745 mm, and the fuel/air mixture in the combustor with air throttling location of 875 mm was burned intensively. It was important to choose the location and time sequence of air throttling for fuel ignition and flame stabilization. The numerical simulation results agreed well with experimental measurements.

show abstract

Massively Parallel Simulations of Kerosene-Fueled Model Scramjet

Cited by 14 publications

References 3 publications

Assessment of the IDDES method acting as wall-modeled LES in the simulation of spatially developing supersonic flat plate boundary layers

Assessment of the IDDES method acting as wall-modeled LES in the simulation of spatially developing supersonic flat plate boundary layers

Experimental and computational study on combustion performance of a kerosene fueled dual-mode scramjet engine

Study on the Effect of Air Throttling on Flame Stabilization of an Ethylene Fueled Scramjet Combustor

Contact Info

Product

Resources

About