Three-Parameter Model of Turbulence for High-Velocity Flows

Молчанов, А. М.; Bykov, L. V.; Yanyshev, D. S.

doi:10.1007/s10891-018-1789-9

Cited by 4 publications

(1 citation statement)

References 9 publications

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“…Computation mesh had 1035253 cells. Several test problems from the previous work of our team (see [9] and [10]) were considered. The obtained strong scaling results were similar to the one shown in figure 4.…”

Section: Strong Scaling Measurementsmentioning

confidence: 99%

Utilization of parallel computing for mathematical modeling of high-enthalpy flows

Gribinenko¹,

Молчанов²,

Siluyanova³

et al. 2022

J. Phys.: Conf. Ser.

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The complexity of problems in gas dynamics is increasing from year to year, which makes sequential computational codes more and more inadequate and brings the importance of creating their parallel implementations. The problem of building the parallel implementations is not simple, especially in case of parallelization of the existing sequential codes. In this paper we present a method of simulation of high-enthalpy flows and describe the peculiarities of its parallel implementation utilizing PETSc library, which gives a wide variety of tools to simplify creation of parallel codes. The results for calculation of OREX reentry module as well as analysis of scalability of the parallel code implementation are given.

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Section: Strong Scaling Measurementsmentioning

confidence: 99%

Utilization of parallel computing for mathematical modeling of high-enthalpy flows

Gribinenko¹,

Молчанов²,

Siluyanova³

et al. 2022

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

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Experimental research of turbulent flow frequency spectra

Краев

2020

INCAS BULLETIN

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Hydraulic and heat transfer processes play a very important role in the design and prototyping of aerospace technology. In most cases this technique works under non-isothermal conditions. Non-isothermal conditions may significantly affect heat transfer and hydrodynamic process. Fundamental research of Non-isothermal turbulent flow is required for further engineering modeling. Models for unsteady processes calculation must be based on fundamental turbulent structure research. Moscow Aviation Institute National Research University (MAI) has been building non-isothermal turbulent flow structures since 1989. An experimental facility was designed to provide gas flow heating. Experimental data of a turbulent gas flow structure in isothermal and non-isothermal conditions are presented. The frequency spectra of axial and radial velocity pulsations are based on experimental data received. The results of experimental turbulent flow research demonstrate fundamental non-isothermal processes influence on the flow structure. The main results of non-isothermal experimental research show that there are three specific zones in turbulent flow structure: wall area, maximal turbulent structure transformation and flow core. The analysis of non-isothermal conditions influence on turbulent pulsations generation and development mechanisms is presented. The results show significant distinction in turbulent flow spectra between isothermal and non-isothermal conditions. The present paper describes a method of experimental research, methodology of data processing and non-isothermal turbulent flow spectra results.

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Experimental research of incipient turbulent flow frequency spectra in hydrodynamic unsteadiness

Краев

2021

INCAS BULLETIN

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Hydraulic and heat transfer processes play a very important role in the design and prototyping of aerospace technology. Unsteady conditions are the peculiarity of mostly aerospace systems. Flow acceleration and deceleration may significantly affect the heat transfer and hydrodynamic process in channels of aerospace systems. For unsteady process modeling, a fundamental research of unsteady hydrodynamic turbulent flow structure., Moscow Aviation Institute National Research University (MAI) has been building unsteady turbulent flow structures since 1989. An experimental facility was designed to provide gas flow acceleration and deceleration. Experimental data of a turbulent gas flow structure during flow acceleration and flow deceleration are presented. The frequency spectra of axial and radial velocity pulsations are based on experimental data. The results of experimental turbulent flow research demonstrate the fundamental hydrodynamic unsteadiness influence on the flow structure. The main results of the flow acceleration and deceleration experimental research show that there are tangible differences from the steady flow structure. The analysis of unsteady conditions influence on the turbulent pulsations generation and development mechanisms is presented. The results show the unsteady conditions influence onto turbulent vortexes disintegration tempo. The present paper describes a method of experimental research, methodology of data processing and turbulent accelerated and decelerated flow spectra results.

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Three-Parameter Model of Turbulence for High-Velocity Flows

Cited by 4 publications

References 9 publications

Utilization of parallel computing for mathematical modeling of high-enthalpy flows

Utilization of parallel computing for mathematical modeling of high-enthalpy flows

Experimental research of turbulent flow frequency spectra

Experimental research of incipient turbulent flow frequency spectra in hydrodynamic unsteadiness

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