Three-dimensional flow structures and heat transfer characteristics of compressible flow over a cylindrical cavity

Wang, Jiangtao; Ma, Te; Wang, Zhe; Wang, Ruixing; Song, Hongwei; Yuan, Wu; Zheng, Hongwei

doi:10.1016/j.ast.2022.107408

Cited by 9 publications

(2 citation statements)

References 30 publications

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“…The surface change of the ablation pit is a significant factor influencing the thermomechanical erosion rate. It can be treated as a cavity flow problem [ 47 ]. Figure 12 depicts the contours and streamlines of flow velocity and static pressure as ablation morphology evolution.…”

Section: Resultsmentioning

confidence: 99%

Instantaneous Ablation Behavior of Laminated CFRP by High-Power Continuous-Wave Laser Irradiation in Supersonic Wind Tunnel

Wang

Song

et al. 2023

Materials

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Experimental and numerical investigations of the instantaneous ablation behavior of laminated carbon fiber-reinforced polymer (CFRP) exposed to an intense continuous-wave (CW) laser in a supersonic wind tunnel are reported. We establish an in situ observation measurement in the experiments to examine the instantaneous ablation behavior. The surface recession depth is calculated by using the Particle Image Velocimetry (PIV) method, taking the ply angle of laminated CFRP as a reference. A coupled thermal-fluid-ablation numerical model incorporating mechanisms of oxidation, sublimation, and thermomechanical erosion is developed to solve the ablation-through problem of multilayer materials. The results show that the laser ablation depth is related to the laser power density, airflow velocity and airflow mode. Thermomechanical erosion is the primary ablation mechanism when the surface temperature is relatively low and the cavity flow mode is a closed cavity flow. When the surface temperature reaches the sublimation of carbon and the airflow mode is transformed to open cavity flow, sublimation plays a dominant role and the ablation rate of thermomechanical erosion gradually decreases.

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Section: Resultsmentioning

confidence: 99%

Instantaneous Ablation Behavior of Laminated CFRP by High-Power Continuous-Wave Laser Irradiation in Supersonic Wind Tunnel

Wang

Song

et al. 2023

Materials

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“…To improve the operation reliability of airborne electronic devices, the vibration and impact characteristics of the devices need to be analysed. Also, given the particularity of airborne data recorders, the compression characteristics of the devices need to be studied [7]. In this study, the vibration, compression, and modal characteristics of airborne data recorders were investigated, which lays a theoretical foundation for the study of the airworthiness of airborne data recorders.…”

Section: Introductionmentioning

confidence: 99%

A Study on Recorder Airworthiness Mechanical Properties of Airborne Data

Xu,

Dai,

Zhu

et al. 2023

J. Phys.: Conf. Ser.

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Airborne data recorders were introduced, and the mechanical properties of airborne data recorders were investigated by using finite element analysis. Specifically, samples under static compression, transient impact, and random vibration were investigated, and a design of airborne data recorder that meets the requirements of airworthiness was proposed based on optimization. This study provides powerful technical support for general aviation safety development with the “combination of power management and delegation, with the main focus on power delegation”.

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On aerodynamic characteristics of rarefied hypersonic flows over variable eccentricity elliptical cavities

Guo

Luo

2023

Aerospace Science and Technology

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Three-dimensional flow structures and heat transfer characteristics of compressible flow over a cylindrical cavity

Cited by 9 publications

References 30 publications

Instantaneous Ablation Behavior of Laminated CFRP by High-Power Continuous-Wave Laser Irradiation in Supersonic Wind Tunnel

Instantaneous Ablation Behavior of Laminated CFRP by High-Power Continuous-Wave Laser Irradiation in Supersonic Wind Tunnel

A Study on Recorder Airworthiness Mechanical Properties of Airborne Data

On aerodynamic characteristics of rarefied hypersonic flows over variable eccentricity elliptical cavities

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