The criterial optics of oceans and glaciers with technogenic pollutions

Merzlikin, V.; Ilushin, Ya. A.; Olenin, A. L.; Sidorov, O. V.; Tovstonog, V. A.

doi:10.1063/1.4975578

Cited by 9 publications

(3 citation statements)

References 5 publications

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“…The subsurface overheating effect is observed both in semitransparent materials and in translucent natural environments, for example, in snow and water covers [28,29].…”

Section: Discussionmentioning

confidence: 99%

Thermal Mode Optimization of Combustion Chamber Walls for Power-Plants Using Semitransparent Porous Ceramics

et al. 2020

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The paper examines control and management by thermal mode of the internal surface of heat-insulated combustion chamber walls for green & efficient diesel and gas turbine engines due to the application of opaque or semitransparent thermal barrier materials (coatings). The authors’ model is devoted to combined radiant heat transfer both inside the heat-insulated combustion chamber and its ceramics walls, which could be scattering and absorbing for penetrating radiant component in the subsurface volume of optically heterogeneous porous material. The influence of thermal conduction, scattering (absorption) and external convective effects on the increase of the internal overheating zone in subsurface layers is simulated under intensive radiation. The unique set of optical, thermal-physical and mechanical properties of structural ceramics, depending on their porosity, were first proposed. The radiation fields of the absorbed energy in the near IR region and the corresponding temperature distributions in the modeled opaque and semitransparent ceramics walls were calculated under a stationary radiant-convective heat load during the active combustion phase at time intervals 0.01…0.1 s (diesel engines) and 10...100 s (turbine ones). In order to control the emission of nitrogen oxides, the authors propose a generation model of NOx, its growth or reduction caused by the management of radiant overheating inside semitransparent heat-insulation in which surface temperature is due to volumetric radiant absorption. It is shown that for semitransparent materials (coatings), the optimal thermal mode is determined first of all by thermal radiant characteristics in near IR at heating small times and it begins to correct at long ones due to the effect of thermal conductivity. This process may be modeled and regulated by the selected microstructural porosity of ceramic heat insulation.

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“…The subsurface overheating effect is observed both in semitransparent materials and in translucent natural environments, for example, in snow and water covers [28,29].…”

Section: Discussionmentioning

confidence: 99%

Thermal Mode Optimization of Combustion Chamber Walls for Power-Plants Using Semitransparent Porous Ceramics

et al. 2020

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“…Evaluating the effectiveness of cooling sub-soils at low air temperatures and in the absence of solar radiation flux (polar night) was performed with a solution of the boundary nonlinear problem for the process of radiative heat transfer [10,14,18,19]:…”

Section: Modeling Of Thermal Conditions Of Sub-soils With Thermal Reg...mentioning

confidence: 99%

“…Modeling of the structure of a roadbed with a two-layer coating was carried out based on the solution of the nonlinear boundary problem for convective and thermoradiation heat exchange [10,14,18,19]. Similar computational estimates of temperature regimes of semitransparent coatings in the short-wavelength range and emitting in the long-wavelength region are carried out in various fields of science and technology [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effective and Ecological Technologies of Application of Structured Materials for Roadbed in the Permafrost Regions

Merzlikin

Bolkina

Ignatova

2018

SSP

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The work is devoted to effective and ecological technologies for the application of functional structured materials for roads, railways, airfields on permafrost with forced cooling of the sub-soil foundation. The physical and mathematical simulation of the thermal state of frozen ground with single and double-layer coatings was performed. The temperature profiles of a model combine roadbed on the longstanding permafrost have been calculated at winter conditions of the Northern Hemisphere. This roadbed include an upper surface coating with low thermal conductivity and high emissivity in the long-wavelength IR range at convective-radiative heat exchange. The second high-conductive subsurface coating is laid on the underlying sub-soil and ensures its cooling as the “heat pump”. The efficiency of the proposed technology of roadbed construction based on the use of non-toxic waste of numerous industrial productions. The carried out research will be in demand for the specialists of transport support, engineering glaciology, in the field of climatology, oceanology, construction, environmental measures, and also in the presentation of financial and economic forecasts of the prospects for the development of polar and subpolar regions, the Arctic and the Antarctic, and high-mountain.

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Universal Effect of Subsurface Thermal Radiant Overheating for Semitransparent Materials and Natural Media

Merzlikin

Parshina

Marynenko

2022

Lecture Notes in Mechanical Engineering

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The criterial optics of oceans and glaciers with technogenic pollutions

Cited by 9 publications

References 5 publications

Thermal Mode Optimization of Combustion Chamber Walls for Power-Plants Using Semitransparent Porous Ceramics

Thermal Mode Optimization of Combustion Chamber Walls for Power-Plants Using Semitransparent Porous Ceramics

Effective and Ecological Technologies of Application of Structured Materials for Roadbed in the Permafrost Regions

Universal Effect of Subsurface Thermal Radiant Overheating for Semitransparent Materials and Natural Media

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