Effect of gaseous coolant temperature on the transpiration cooling for porous wall in the supersonic flow

Leontiev, A. I.; Saveliev, A. S.; Kichatov, Boris; Киверин, А. Д.; Korshunov, Alexey; Sudakov, V. B.

doi:10.1016/j.ijheatmasstransfer.2019.118433

Cited by 21 publications

(5 citation statements)

References 37 publications

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“…Let us now consider the possible causes of the observed behavior of the flame in the considered coaxial burner. As it was shown recently in [22], the important roles in the heat transfer near the porous (or perforated) wall belong both to the dissipation of kinetic energy and convective heat transfer in the formed boundary layer. In view of this, the flow separation from the perforated wall due to the gas injection defines the specific mode of heat transfer to the wall.…”

Section: Resultsmentioning

confidence: 84%

“…However, at the same time, it is also possible to utilize gaseous heat screens. As is shown in [22], gas injection into the flow through the porous wall can affect the temperature of the wall noticeably. Therefore, such an approach is suitable for the maintenance of stable combustion in low-reactive combustible mixtures, including lean mixtures.…”

Section: Introductionmentioning

confidence: 93%

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Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

Киверин

Kichatov

Korshunov

et al. 2021

Fluids

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This paper is devoted to the analysis of the effect of gas injection on the efficiency of gaseous fuel burning. A coaxial burner with a perforated inner wall is presented in which the methane–air acceleration is observed. With the use of numerical analysis, it is demonstrated that the flame acceleration is related to the flow separation from the inner wall that, in turn, leads to the reduction in heat losses to the wall as well as to vortex formation and reduction in momentum losses. On the basis of the obtained results, a new technology of efficient burning of gaseous fuels can be proposed with the use of gas and/or liquid fuel injection.

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Section: Resultsmentioning

confidence: 84%

Section: Introductionmentioning

confidence: 93%

Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

Киверин

Kichatov

Korshunov

et al. 2021

Fluids

Self Cite

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show abstract

“…1,7 Even so it has been invented in the 1950s, 8 due to both advances made in manufacturing and the need for greater cooling efficiency, recently transpiration cooling has come back into the focus of research and has been intensively studied experimentally, analytically and numerically. 5,[9][10][11][12][13][14] The porous materials used for transpiration cooling have to meet certain requirements, like high porosity, light-weight, precise geometry, and additionally, for turbine blades, 6 great material strength. Commonly used types of porous materials are sintered metal or ceramic porous media 7 and ceramic matrix composites, 15 leaving the pores to be a result of randomness.…”

Section: Transpiration Coolingmentioning

confidence: 99%

“…Some applications nowadays considered for transpiration cooling include scramjet combustion chambers, 4 rocket thrust chambers, 5 turbine blades, 6 and others 1,7 . Even so it has been invented in the 1950s, 8 due to both advances made in manufacturing and the need for greater cooling efficiency, recently transpiration cooling has come back into the focus of research and has been intensively studied experimentally, analytically and numerically 5,9‐14 …”

Section: Introductionmentioning

confidence: 99%

Probabilistic constrained Bayesian inversion for transpiration cooling

Steins

Bui‐Thanh²,

Herty

et al. 2022

Numerical Methods in Fluids

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To enable safe operations in applications such as rocket combustion chambers, the materials require cooling to avoid material damage. Here, transpiration cooling is a promising cooling technique. Numerous studies investigate possibilities to simulate and evaluate the complex cooling mechanism. One naturally arising question is the amount of coolant required to ensure a safe operation. To study this, we introduce an approach that determines the posterior probability distribution of the Reynolds number using an inverse problem and constraining the maximum temperature of the system under parameter uncertainties. Mathematically, this chance inequality constraint is dealt with by a generalized polynomial chaos expansion of the system. The posterior distribution will be evaluated by different Markov chain Monte Carlo based methods. A novel method for the constrained case is proposed and tested among others on two‐dimensional transpiration cooling models.

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“…Some applications nowadays considered for transpiration cooling include scramjet combustion chambers [4], rocket thrust chambers [5], turbine blades [6] and others [1,7]. Even so it has been invented in the 1950's [8], due to both advances made in manufacturing and the need for greater cooling efficiency, recently transpiration cooling has come back into the focus of research and has been intensively studied experimentally, analytically and numerically [5,9,10,11,12,13,14].…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Constrained Bayesion Inversion for Transpiration Cooling

Steins¹,

Bui-Thanh²,

Herty³

et al. 2022

Preprint

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To enable safe operations in applications such as rocket combustion chambers, the materials require cooling to avoid material damage. Here, transpiration cooling is a promising cooling technique. Numerous studies investigate possibilities to simulate and evaluate the complex cooling mechanism. One naturally arising question is the amount of coolant required to ensure a safe operation. To study this, we introduce an approach that determines the posterior probability distribution of the Reynolds number using an inverse problem and constraining the maximum temperature of the system under parameter uncertainties. Mathematically, this chance inequality constraint is dealt with by a generalized Polynomial Chaos expansion of the system. The posterior distribution will be evaluated by different Markov Chain Monte Carlo based methods. A novel method for the constrained case is proposed and tested among others on two-dimensional transpiration cooling models.

show abstract

Effect of gaseous coolant temperature on the transpiration cooling for porous wall in the supersonic flow

Cited by 21 publications

References 37 publications

Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

Experimental and Numerical Study of Gas Injection Effect on the Methane–Air Combustion inside a Coaxial Burner

Probabilistic constrained Bayesian inversion for transpiration cooling

Probabilistic Constrained Bayesion Inversion for Transpiration Cooling

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