Development of the numerical model for evaluating the temperature field and thermal stresses in structural elements of aircrafts

The conjugate problem of aerodynamics and heat and mass transfer in heat-shielding structures made of ablating polymer composite materials is considered. To determine the heat fluxes in the shock layer, the chemical composition of the atmosphere is taken into account. A mathematical formulation of the joint problem is formulated and an algorithm for numerical solution is proposed. An example of a numerical solution of the problem for the reentry spacecraft Stardust is presented. It is shown that due to the high temperatures of aerodynamic heating of a structure made of a polymer composite material, an intense internal generation of gas appears in the structure of the material, which can lead to the destruction of the material.

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“…Consider the system of equations for a viscous, chemically-reacting heat-conducting gas [8][9][10][11][12][13][14][15][16]:…”

Section: Navier-stokes System and Equations Of Chemical Kineticsmentioning

confidence: 99%

Finite element modeling of thermal stresses in aerospace structures from polymer composite materials

Dimitrienko

Koryakov²,

Yurin³

et al. 2023

E3S Web of Conf.

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“…На рис. 7. приведено распределение температуры газа вдоль поверхности цилиндра, затупленного по сфере [21][22][23][24][25][26][27][28][29][30][31][32]. Отметим, что указанные аэротермофизические значения соответствуют гиперзвуковому режиму течения газа (М = 9.8).…”

Section: некоторые результаты расчетаunclassified

Development of a numerical model designed to calculate the temperature field and thermal stresses in structural elements of aircrafts

Kuzenov¹,

Шумаев²,

Dobrynina³

2019

PhChGD

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“…The impact of the outdoor air fraction by economizer control type in cooling system loads based on real air handling unit operation parameters was disclosed, which provided references for economizer controls at hot-humid conditions [36]. Temperature fields and thermal stresses of aircraft key components of a simple geometric shape have also been studied by numerical modelling [37]. Furthermore, a mathematical model was proposed to solve convective heat transfer on the surface of typical structural elements of modern perspective aircrafts [38].…”

Section: Introductionmentioning

confidence: 99%

Tower Configuration Impacts on the Thermal and Flow Performance of Steel-Truss Natural Draft Dry Cooling System

et al. 2021

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In recent years, the steel-truss natural draft dry cooling technique has received attention owing to its advantages in better aseismic capability, shorter construction period, and preferable recycling. For cooling towers generating the draft force of air flow, its configuration may impact the thermal and flow performance of the steel-truss natural draft dry cooling system. With regard to the issue, this work explored the thermal and flow characteristics for the steel-truss natural draft dry cooling systems with four typical engineering tower configurations. By numerical simulation, the pressure, flow, and temperature contours were analyzed, then air mass flow rates and heat rejections were calculated and compared for the local air-cooled sectors and overall steel-truss natural draft dry cooling systems with those four tower configurations. The results present that tower 2 with the conical/cylindrical configuration had slightly lower heat rejection compared with tower 1 with the traditional hyperbolic configuration. Tower 3 with the hyperbolic/cylindrical configuration showed better thermo-flow performances than tower 1 at high crosswinds, while tower 4 with the completely cylindrical configuration appeared to have much reduced cooling capability under various crosswind conditions, along with strongly deteriorated thermal and flow behaviors. As for engineering application of the steel-truss natural draft dry cooling system, the traditional hyperbolic tower configuration is recommended for local regions with gentle wind, while for those areas with gale wind yearly, the hyperbolic/cylindrical integrated cooling tower is preferred.

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Development of the numerical model for evaluating the temperature field and thermal stresses in structural elements of aircrafts

Cited by 11 publications

References 9 publications

Finite element modeling of thermal stresses in aerospace structures from polymer composite materials

Finite element modeling of thermal stresses in aerospace structures from polymer composite materials

Development of a numerical model designed to calculate the temperature field and thermal stresses in structural elements of aircrafts

Tower Configuration Impacts on the Thermal and Flow Performance of Steel-Truss Natural Draft Dry Cooling System

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