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Academic literature on the topic 'Diabasis (Firm)'

Author: Grafiati

Published: 28 July 2024

Last updated: 31 July 2025

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Journal articles on the topic "Diabasis (Firm)"

1

Voinov, Nikolay Aleksandrovich, Denis Andreyevich Zemtsov, Anastasiya Viktorovna Bogatkova, and Nina Vladimirovna Deryagina. "INTENSIFICATION OF HEAT EXCHANGE IN DIABATIC RECTIFICATION COLUMNS." chemistry of plant raw material, no. 4 (December 21, 2020): 511–18. http://dx.doi.org/10.14258/jcprm.2020048580.

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The heat exchange in a diabatic column was investigated during the rectification of an ethanol-water mixture, in which partial condensation of rising vapors on the surface of vertical heat exchange tubes installed vertically along the height of the installation was carried out, as well as the evaporation of intermediate condensate on the surface of horizontal plates. Based on the review of diabatic columns, it is shown that they can reduce the cost of conducting the rectification process. Heat-exchange devices placed on trays of rectification units are considered and ways to intens

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Voinov, Nikolai A., Anastasiya V. Bogatkova, and Denis A. Zemtsov. "Intensification of Heat and Mass Transfer in a Diabatic Column with Vortex Trays." ChemEngineering 6, no. 2 (2022): 29. http://dx.doi.org/10.3390/chemengineering6020029.

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We used vortex contact devices that we developed and investigated to make a new design of an alcohol diabatic distillation column with heat exchange pipes (as the reflux condenser) passing through concentrating section trays. In the column, ascending vapors partially condensed on the surface of vertically installed heat exchange tubes, forming a reflux. The reflux was then mixed with the draining liquid flow in the vortex contact devices placed on the trays. Heat was removed from the column through the boiling of the draining water film along the inner surface of the heat exchange pipes. We co

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3

Martini, P., A. Schulz, H. J. Bauer, and C. F. Whitney. "Detached Eddy Simulation of Film Cooling Performance on the Trailing Edge Cutback of Gas Turbine Airfoils." Journal of Turbomachinery 128, no. 2 (2005): 292–99. http://dx.doi.org/10.1115/1.2137739.

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The present study deals with the unsteady flow simulation of trailing edge film cooling on the pressure side cut back of gas turbine airfoils. Before being ejected tangentially on the inclined cut-back surface, the coolant air passes a partly converging passage that is equipped with turbulators such as pin fins and ribs. The film mixing process on the cut back is complicated. In the near slot region, due to the turbulators and the blunt pressure side lip, turbulence is expected to be anisotropic. Furthermore, unsteady flow phenomena like vortex shedding from the pressure side lip might influen

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4

Meyer, T. "Analytical solution for combined heat and mass transfer in laminar falling film absorption with uniform film velocity - diabatic wall boundary." International Journal of Heat and Mass Transfer 80 (January 2015): 802–11. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2014.09.049.

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5

Pautsch, A. G., and T. A. Shedd. "Adiabatic and diabatic measurements of the liquid film thickness during spray cooling with FC-72." International Journal of Heat and Mass Transfer 49, no. 15-16 (2006): 2610–18. http://dx.doi.org/10.1016/j.ijheatmasstransfer.2006.01.024.

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6

Gerendas, M., and S. Wittig. "Experimental and Numerical Investigation on the Evaporation of Shear-Driven Multicomponent Liquid Wall Films." Journal of Engineering for Gas Turbines and Power 123, no. 3 (2001): 580–88. http://dx.doi.org/10.1115/1.1362663.

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The presented work is concerned with two-phase flows similar to those in prefilming airblast atomizers and combustors employing film vaporization. Correlations for the multicomponent mixture properties and models for the calculations of the multicomponent evaporation were implemented in a well tested elliptic finite-volume code GAP-2D (S. Wittig et al., 1992, “Motion and Evaporation of Shear-Driven Liquid Films in Turbulent Gas,” ASME J. Eng. Gas Turbines Power 114, pp. 395–400) utilizing time-averaged quantities, k,ε turbulence model, wall functions, and curve-linear coordinates in the gas ph

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7

Adamsson, Carl, and Henryk Anglart. "Film flow measurements for high-pressure diabatic annular flow in tubes with various axial power distributions." Nuclear Engineering and Design 236, no. 23 (2006): 2485–93. http://dx.doi.org/10.1016/j.nucengdes.2006.03.002.

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8

Sverguzova, S. V., Zh A. Sapronova, and R. R. Valiev. "The Use of Water Treatment Petroleum Sludge in the Manufacture of Ceramic Products." Solid State Phenomena 299 (January 2020): 235–40. http://dx.doi.org/10.4028/www.scientific.net/ssp.299.235.

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The paper presents the results of studies of the possibility of utilization of petroleum sludge, obtained during the purification of oil-water emulsions, using gabbro-diabase powder in the production of ceramic building products. The sludge is proposed to add to the clay mass as an entrained additive. The influence of the sludge additive mass on such physical and mechanical indicators of ceramic samples, as density, compressive strength, water absorption, air shrinkage and fire shrinkage, and density, is studied. Ceramic samples were prepared using natural clays, deposits Bessonovka (Belgorod

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9

Michaud, Mathias, Francesco Ornano, Nafiz Chowdhury, and Thomas Povey. "Methodology for High-Accuracy Infrared Calibration in Environments with Through-Wall Heat Flux." Journal of the Global Power and Propulsion Society 4 (April 1, 2020): 1–13. http://dx.doi.org/10.33737/jgpps/118091.

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This paper describes a new method for accurate in situ infrared (IR) calibration in environments with significant through-wall heat flux and surface temperature non-uniformity. In the context of turbine research environments, conventional approaches for in situ IR calibrations rely on thermocouples embedded in the surface or bonded to the surface using an adhesive layer. A review of the literature points to lack of emphasis on the uncertainty in the calibration arising from the effect of the adhesive substrate and paint on the temperature measured by the thermocouple, namely that under diabati

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Voronov, G. K., A. I. Fesenko, O. V. Savvova, S. O. Melnyk, and O. P. Dehurko. "Prospects for the use of stone processing waste to obtain architectural and building ceramics." Кераміка: наука і життя, no. 4(45) (December 27, 2019): 7–13. http://dx.doi.org/10.26909/csl.4.2019.1.

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The article presents the results of a study of stone processing waste in order to justify the implementation of the technological process of manufacturing architectural and construction products with their use. The structure of the distribution of waste arising from stone processing processes is given. The analysis of the relevance of the problems of utilization of slurry waste stone processing. Studies were conducted to determine the chemical, mineralogical and phase composition of stone waste. It was found that these wastes belong to gabbro-diabase rocks, which was confirmed by their chemica

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Books on the topic "Diabasis (Firm)"

1

Scansani, Alessandro. A proporre bellezza e umanità: I colophon di Alessandro Scansani. Edizioni di storia e letteratura, 2013.

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2

Torsello, Kash Gabriele. Il villaggio di cartone: Diabasis : un film di Ermanno Olmi. 24 ore cultura, 2011.

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Conference papers on the topic "Diabasis (Firm)"

1

Ahmad, Masroor, Evgeniy Burlutskiy, Simon P. Walker, and Geoffrey F. Hewitt. "Effect of Heat Flux on Droplet Entrainment Using Annular Flow Dryout Model." In 2010 14th International Heat Transfer Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/ihtc14-22866.

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Annular film dryout depends upon the competition of entrainment, deposition and evaporation processes between the droplet-laden core and wall liquid film. In this paper, effect of heat flux on droplet entrainment is analyzed by modeling different low and high pressure diabatic annular flow experiments numerically using an annular flow dryout model (AFM). Overall, the AFM predicted the experimental data reasonably accurately. It is concluded that at high pressures increasing heat flux may enhance net entrainment considerably but this effect diminishes at low pressures.

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2

Anglart, Henryk. "Analysis of the Onset of Dryout Conditions in Diabatic Annular Two-Phase Flows." In 2012 20th International Conference on Nuclear Engineering and the ASME 2012 Power Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icone20-power2012-54881.

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An analysis is presented that predicts the conditions which allow for a formation of a stable dry patch in diabatic annular two phase flows. The analysis employs a force balance formulated for the leading edge of the liquid film. In addition to stagnation, thermo-capillary and vapor thrust forces, the analysis includes effects of the pressure gradient and the interfacial shear stress. It is shown that the equilibrium conditions of a dry patch are dominated by the stagnation force, the surface tension force, the capillary force and the skin drag force. For high heat flux conditions only the fir

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3

Zeh, Christopher, Ole Willers, Thomas Hagemann, Hubert Schwarze, and Joerg R. Seume. "Evaluation of the Rotor Temperature Distribution of an Automotive Turbocharger Under Hot Gas Conditions Including Indirect Experimental Validation." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-16077.

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Abstract While turbocharging is a key technology for improving the performance and efficiency of internal combustion engines, the operating behavior of the turbocharger is highly dependent on the rotor temperature distribution as it directly modifies viscosity and clearances of the fluid film bearings. Since a direct experimental identification of the rotor temperature of an automotive turbocharger is not feasible at an acceptable expense, a combination of numerical analysis and experimental identification is applied to investigate its temperature characteristic and level. On the one hand, a n

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4

Gerendas, M., and S. Wittig. "Experimental and Numerical Investigation on the Evaporation of Shear-Driven Multi-Component Liquid Wall Films." In ASME Turbo Expo 2000: Power for Land, Sea, and Air. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/2000-gt-0136.

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The presented work is concerned with two-phase flows similar to those in prefilming airblast atomizers and combustors employing film vaporization. Correlations for the multi-component mixture properties and models for the calculations of the multi-component evaporation were implemented in a well tested elliptic finite-volume code GAP-2D (Wittig et al., 1992) utilizing time-averaged quantities, k,ε-turbulence model, wall functions, and curve-linear coordinates in the gas phase, adiabatic or diabatic conditions at the film plate, partially turbulent velocity profile, uniform temperature and rapi

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5

Martini, P., A. Schulz, H. J. Bauer, and C. F. Whitney. "Detached Eddy Simulation of Film Cooling Performance on the Trailing Edge Cut-Back of Gas Turbine Airfoils." In ASME Turbo Expo 2005: Power for Land, Sea, and Air. ASMEDC, 2005. http://dx.doi.org/10.1115/gt2005-68084.

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Abstract:

The present study deals with the unsteady flow simulation of trailing edge film cooling on the pressure side cut-back of gas turbine airfoils. Before being ejected tangentially on the inclined cut-back surface, the coolant air passes a partly converging passage that is equipped with turbulators such as pin fins and ribs. The film mixing process on the cut-back is complicated. In the near slot region, due to the turbulators and the blunt pressure side lip, turbulence is expected to be anisotropic. Furthermore, unsteady flow phenomena like vortex shedding from the pressure side lip might influen

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6

Gritsch, M., A. Schulz, and S. Wittig. "Heat Transfer Coefficient Measurements of Film-Cooling Holes With Expanded Exits." In ASME 1998 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/98-gt-028.

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Detailed measurements of heat transfer coefficients in the nearfield of three different film-cooling holes are presented. The hole geometries investigated include a cylindrical hole and two holes with a diffuser shaped exit portion (i.e. a fan-shaped and a laidback fanshaped hole). They were tested over a range of blowing ratios M = 0.25…1.75 at an external crossflow Mach number of 0.6 and a coolant-to-mainflow density ratio of 1.85. Additionally, the effect of the internal coolant supply Mach number is addressed. Temperatures of the diabatic surface downstream of the injection location are me

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7

La Forgia, Nicolas, Carlos A. Dorao, and Maria Fernandino. "Experimental Investigation and Discussion of Heat Transfer Mechanisms During Flow Boiling in Mini-Channels Using Refrigerant R134a." In ASME 2016 14th International Conference on Nanochannels, Microchannels, and Minichannels collocated with the ASME 2016 Heat Transfer Summer Conference and the ASME 2016 Fluids Engineering Division Summer Meeting. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/icnmm2016-7957.

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The main objective of this work was to investigate the heat transfer characteristics of elongated bubbles in 0.5mm diameter mini-channels using R134a as working fluid. In particular to identify the contribution of the nucleate and film boiling to the heat transfer mechanism at low thermodynamical qualities. The measurements were performed in a glass test section with several diabatic and adiabatic regions. The adiabatic region was heated by Joule effect using an ITO coating as heater. The measurement of heat transfer coefficient for elongated bubbles without the presence of bubble nucleation w

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