Chapter 3
Numerical Simulation of Flow Structure
Near Descent Module in Mars
Atmosphere
Alexander V. Babakov
Abstract Based on the conservative numerical method of flux, a hypersonic flow
of a viscous heat-conducting gas is simulated near the landing module in Martian
atmosphere. Special attention is paid to the study of the structure of non-stationary
flow on the side and bottom surfaces of the module. Flow parameters data in the
indicated areas are given. Vortex flow patterns near the descent module reflecting
the spatial non-stationary nature of the flow are presented. Numerical modeling is
implemented on multiprocessor supercomputers of cluster architecture.
3.1 Introduction
One method of studying aerodynamic characteristics of aerospace vehicles is numerical modeling. At the same time, the capabilities of this research method have
significantly increased with the advent of multiprocessor supercomputers. It became
possible to carry out modeling of spatial unsteady flows near objects of complex
form based on more complete mathematical models.
The difficulty of numerical modeling of flows near objects of complex shape is
associated with certain difficulties, primarily with the complex structure of the flow.
The gas flow around poorly streamlined bodies, as a rule, is spatial, non-stationary,
and has a vortex character. Moreover, for most aerodynamic problems of aerospace
vehicles, the flow is characterized by high Reynolds numbers, which further complicates the numerical research. Vortex structures, non-stationary flow, and turbulence
arising in such a flow have a significant impact on the aerodynamic characteristics
of the vehicles.
From a computational point of view, the study of such flows requires the use
of computational grids consisting of several tens of millions (or more) calculation
A. V. Babakov (B)
Institute for Computer Aided Design of the RAS, 19/18, Vtoraya Brestskaya ul., Moscow 123056,
Russian Federation
e-mail: avbabakov@mail.ru
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
L. C. Jain et al. (eds.), Applied Mathematics and Computational Mechanics for Smart
Applications, Smart Innovation, Systems and Technologies 217,
https://doi.org/10.1007/978-981-33-4826-4_3
25
Numerical Simulation of Flow Structure
Near Descent Module in Mars
Atmosphere
Alexander V. Babakov
Abstract Based on the conservative numerical method of flux, a hypersonic flow
of a viscous heat-conducting gas is simulated near the landing module in Martian
atmosphere. Special attention is paid to the study of the structure of non-stationary
flow on the side and bottom surfaces of the module. Flow parameters data in the
indicated areas are given. Vortex flow patterns near the descent module reflecting
the spatial non-stationary nature of the flow are presented. Numerical modeling is
implemented on multiprocessor supercomputers of cluster architecture.
3.1 Introduction
One method of studying aerodynamic characteristics of aerospace vehicles is numerical modeling. At the same time, the capabilities of this research method have
significantly increased with the advent of multiprocessor supercomputers. It became
possible to carry out modeling of spatial unsteady flows near objects of complex
form based on more complete mathematical models.
The difficulty of numerical modeling of flows near objects of complex shape is
associated with certain difficulties, primarily with the complex structure of the flow.
The gas flow around poorly streamlined bodies, as a rule, is spatial, non-stationary,
and has a vortex character. Moreover, for most aerodynamic problems of aerospace
vehicles, the flow is characterized by high Reynolds numbers, which further complicates the numerical research. Vortex structures, non-stationary flow, and turbulence
arising in such a flow have a significant impact on the aerodynamic characteristics
of the vehicles.
From a computational point of view, the study of such flows requires the use
of computational grids consisting of several tens of millions (or more) calculation
A. V. Babakov (B)
Institute for Computer Aided Design of the RAS, 19/18, Vtoraya Brestskaya ul., Moscow 123056,
Russian Federation
e-mail: avbabakov@mail.ru
© The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021
L. C. Jain et al. (eds.), Applied Mathematics and Computational Mechanics for Smart
Applications, Smart Innovation, Systems and Technologies 217,
https://doi.org/10.1007/978-981-33-4826-4_3
25