Dimensioning of automated regenerative cooling: Setting of high-end experiment

Taddeo, L.; Gascoin, Nicolas; Fedioun, Ivan; Chetehouna, Khaled; Lamoot, Ludovic; Fau, Guillaume

doi:10.1016/j.ast.2015.03.015

Cited by 31 publications

(16 citation statements)

References 31 publications

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“…Since renewable active thermal protection systems should usually be combined with fuel thermal management technologies [38], research progress of circulating cooling will be summarized in section where thermal management will be discussed. In this section, other active thermal protection technologies applied to propulsion systems of hypersonic aircrafts were introduced.…”

Section: Latest Research Progress Of Active Thermal Protectionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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Combined-cycle engine is a potential propulsion system for hypersonic aircraft. To ensure long-term, normal operation of combined-cycle engine under the harsh environment of high thermal load, it is of great significance to study the thermal protection and management of the propulsion system. In this study, the objective and development status of thermal protection and thermal management systems for the combined-cycle propulsion system were described. The latest research progresses of thermal protection, thermal barrier coating, and thermal management system of the combined-cycle propulsion system were summarized. Moreover, the problems and shortcoming in current researches were summarized. In addition, a prospect for the future development of thermal protection and management of the combined-cycle propulsion system was presented, pointing out a direction of great value and vital research significance to thermal protection and management of the combined-cycle propulsion system.

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Section: Latest Research Progress Of Active Thermal Protectionmentioning

confidence: 99%

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

et al. 2019

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“…One of the most common active cooling technique using the fuel as coolant is regenerative cooling. The fuel flows through cooling channels located between the inner and the outer walls of the engine, before being injected in the combustor; a counter-flow heat exchange between the fuel-coolant and the burned gases is thus established [5,14].…”

Section: Introductionmentioning

confidence: 99%

“…Regenerative cooling is particularly effective when an endothermic propellant is used as fuelcoolant as fuel decomposition in the cooling channels also generates light species, mainly hydrogen, ethane, ethylene, acetylene, whose ignition delay times are very low when compared to the initial heavy propellant. Thus, fuel combustion kinetics becomes faster and the performance of the engine improves [13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…The design of a regeneratively cooled engine is very challenging, as the definition of an engine regulation strategy allowing to master the various conditions encountered during the flight requires the ability to manage several issues [13][14][15][16][17]. First, the design of the combustion chamber and of the cooling channels.…”

Section: Introductionmentioning

confidence: 99%

“…These issues have been studied in the framework of various programs [4][5][6][7][8][9][10][11][12][13][14]17,. Many numerical studies, directed at estimating the heat flux density passing from the combustion gases to the combustor wall, the highest heat flux combustor regions and the heat flux absorbed by the pyrolyzing fuel are available [4][5][6]9,10,[12][13][14]. The design of the regeneratively cooled combustion chambers, the definition of the shape of the cooling channels and the choice of materials appropriate for endothermic fuel cooled structures have been investigated, mainly by means of numerical calculations, since the 1990s [5,[22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

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Experimental study of pyrolysis–combustion coupling in a regeneratively cooled combustor: System dynamics analysis

Taddeo

Gascoin

Chetehouna

et al. 2017

Aerospace Science and Technology

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Scramjets are suitable for hypersonic flight, but their use requires the ability to ensure their thermal protection. In this context, a remotely controlled fuel-cooled combustor, suitable for the experimental analysis of the pyrolysis-combustion coupling characterizing a regeneratively cooled combustion chamber when a hydrocarbon propellant is used, has been designed. Similitude rules were used. Ethylene is used as fuel, air as oxidizer, with an equivalence ratio between 1.0 and 1.5 and a fuel injection pressure between 1 and 10 bar. Experiments are realized by varying operating conditions, to determine their impact on combustor heat transfer dynamics. Previous numerical results have been confirmed. A hysteresis effect has been demonstrated. It has been observed that system response time to fuel mass flow rate increases is lower (of about 40 to 50%) than system response time to fuel mass flow rate decreases and that a rise in equivalence ratio from 1.0 to 1.25 produces an increase in system response intensity that is, following the operating conditions, in the range from 90% to 170%. It has also been seen that an increase in equivalence ratio from 1.0 to 1.5 produces a raise of the temperature of the fuel-coolant (of about 40 to 50%), due to the increase in the emissivity of the flame.

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Numerical simulation of thermal insulation and longevity performance in new lightweight ladle

Sun

Tian

et al. 2020

Concurrency and Computation

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For meeting the comprehensive requirements of "super insulation," "lightweight," and "longevity" of the contemporary ladle, this article designs a new kind of lightweight ladle with heat preservation and longevity performance, and based on steady-state analysis method and numerical simulation technology, the comparison of temperature distribution between new lightweight and traditional ladle under typical operating modes is made and analyzed. The simulation results of temperature field prove that the performance of heat preservation in new kind of lightweight ladle has been improved obviously from the two aspects of ladle shell temperature and molten steel file rate. At the same time, the simulation results of stress field indicate that the stress of designed lightweight ladle reduced and distributed more evenly, which is conducive to prolonging the work time in-service of the ladle. Finally, based on the field test, the simulation is proved to be effective, and the designed ladle structure achieves the expected purpose.

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Dimensioning of automated regenerative cooling: Setting of high-end experiment

Abstract: Regenerative cooling is a hot topic as it contributes to energy saving and energy conversion, for

Cited by 31 publications

References 31 publications

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Thermal Protection System and Thermal Management for Combined-Cycle Engine: Review and Prospects

Experimental study of pyrolysis–combustion coupling in a regeneratively cooled combustor: System dynamics analysis

Numerical simulation of thermal insulation and longevity performance in new lightweight ladle

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