Geometric Evaluation of Thrust-Vectoring Nozzles for Aerodynamic Performance Predictions

Wilson, Erich A.; Adler, Dan; Bar‐Yoseph, P.

doi:10.1515/tjj.2003.20.4.275

Cited by 3 publications

(3 citation statements)

References 4 publications

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“…2,3,4,5,6 For instance, the AVEN mechanism has many mechanical components and parts of the mechanism, the structure is complex, the digital simulation calculation need large amount of calculation, it is difficult to build fluid field model, and the test research cycle is long and the cost is expensive, which make it difficult to conduct AVEN fluidsolid-thermal coupling theoretical research. 7,8 At present, there are few public literature on the research of AVEN fluid-solid-thermal coupling problem, but there are many researches on fluid-solid-thermal coupling problem for other mechanism, such as solid rocket nozzle, 9 bionic wing, 10 turbine, 11,12 injector, 13 and porous media. 14,15,16 Liu et al 17 considered that the solid structure characteristics are affected by temperature, and developed a multi-physics calculation algorithm on the fluid-solid coupling surface.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of fluid-solid-thermal coupling characteristics of axial-symmetric vectoring exhaust nozzle

Yao

Zhang

Wei

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

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Aiming at the problems of axial-symmetric vectoring exhaust nozzle (AVEN) mechanism due to its complex structure, which leads to the large amount of digital simulation calculation under the coupling of multi-physics, and it is difficult to establish the fluid domain model, a complex AVEN structure is proposed as the research object, the method of AVEN flow field simplify model in cylindrical coordinate system. This method simplifies the contact domain between the expansion regulator plate, the cruciform joint, the convergent regulator plate and the flow field into a cylindrical overall physical model, and constructs a fluid-solid coupling heat transfer physical model. The feasibility of the model is verified. The AVEN fluid-solid-thermal coupling digital simulation calculation is carried out using the sequential one-way coupling method. First, based on computational fluid dynamics, the AVEN fluid-solid coupling heat transfer calculation is carried out to calculate the coupling surface temperature and pressure field. Second, the calculated coupling surface temperature is used as the thermal analysis boundary condition. Then, the temperature field calculated by the thermal analysis and the pressure field calculated by the fluid-solid coupling heat transfer analysis are used as the boundary conditions of the structural strength analysis. Finally, fluid-solid-thermal coupling analysis of AVEN including aerodynamic load and thermal load is carried out. The calculation results show that the digital simulation method proposed in this paper can be used in engineering practice. The temperature and pressure of the AVEN coupling surface show a trend of first decreasing, then increasing, and then decreasing with the change of the position from the throat. Some AVEN mechanical components and parts have stress singular phenomena. The deformation of the AVEN structure is obviously affected by the thermal load, and the minimum change of rate is 9.54%, the maximum change of rate is 1845.37%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of fluid-solid-thermal coupling characteristics of axial-symmetric vectoring exhaust nozzle

Yao

Zhang

Wei

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part C:

View full text Add to dashboard Cite

show abstract

“…A performance analysis for such a simple solution has to be conducted since it is poorly presented in the recent literature, which focuses on ITV, or fluidic solutions. In addition to its simplicity, the cover nozzle also present the advantage to avoid the distortion of the nozzle geometry as described in [10] for IVT applications.…”

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confidence: 99%