Calculating processes of laminar and turbulent heat transfer around the elements of the aircraft

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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“…At the same time, for some problems of mathematical physics (e.g. high-speed aerodynamics problems), it is important to hold the structuring and hexahedral shape of the mesh cells in the entire domain [7][8][9], the applicability of the mesh for finite difference methods [8][9][10], geometric and dynamic adaptation of the mesh in the entire domain [11].…”

Section: Introductionmentioning

confidence: 99%

Development of Preprocessor of SIGMA Software for Computer Simulation in Aerospace Engineering

Dimitrienko¹,

Zakharov²

2018

Proceedings of the International Conference "Actual Issues of Mechanical Engineering" (AIME 2018)

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The paper covers the area of block-structured adaptive grid generation for finite difference, finite element and finite volume methods. It deals with a problem of development of information technologies and algorithms for generating such grids in complex geometries. Its key idea is to bring together the different existing techniques for computer-aided geometric design of domains, grid generation, grid concentration and grid subdivision. The methods used for a construction of domain geometries, working with block-structured quasi-continuous grids, a subdivision of block-structured adaptive grids into vertex-centered control volumes, generation of ghost nodes and cells, calculation of distances to boundaries are discussed. It is described of the software interfaces of the geometry editor and the mesh generator that were developed in the SIGMA preprocessor. The results of the generation of three-dimensional adaptive grids for the domain of external flow near a hemisphere, flow around a surface of the high-speed aircraft of Falcon HTV-2 type and for the domain of the gap between a wheel and a body of an aircraft are analyzed. The presented methods and algorithms for grid generation have the following advantages: 1. The grids are structured and mesh cells are hexahedra in the entire complex curvilinear computational domain. 2. The grids can be applied for finite difference methods. 3. The grid lines are adjusting with the flow in the whole domain. Keywords-block-structured adaptive grid, finite difference grid, computer-aided geometric design, complex domain, mesh subdivision, preprocessing

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Calculating processes of laminar and turbulent heat transfer around the elements of the aircraft

Cited by 11 publications

References 11 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

Development of Preprocessor of SIGMA Software for Computer Simulation in Aerospace Engineering

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