scholarly journals Controlling changes in the combustion surface of solid fuel charges through the use of heat-conducting elements

2021 ◽  
pp. 67-75
Author(s):  
S. K. Saveliev ◽  
D. K. Shcheglov
Keyword(s):  
Experimental Data ◽  
Thermal Diffusivity ◽  
Melting Point ◽  
Combustion Rate ◽  
Regression Models ◽  
Combustion Surface ◽  
Heat Conducting ◽  
Variation Range ◽  
Crystalline Forms ◽  
Condensed Systems

On the basis of experimental data on the local values of the combustion rate of condensed systems along the heat-conducting filaments placed therein, regression models were constructed to relate the value of the local combustion rate with such characteristics of heat-conducting filaments as the thermal diffusivity and melting point. The obtained regression model was used to assess a possible expansion of the variation range of the local combustion rate when using various crystalline forms of CVD diamonds as heat-conducting filaments. It was shown that a local increase in the combustion rate could exceed the baseline value by 200 times. The possibility of controlling the transformation of the combustion surface by using heat-conducting filaments with variable characteristics was confirmed.

scholarly journals High Thermal Diffusivity in Thermally Treated Filamentous Virus-Based Assemblies with a Smectic Liquid Crystalline Orientation

Viruses ◽  
2018 ◽  
Vol 10 (11) ◽  
pp. 608 ◽  
Author(s):  
Toshiki Sawada ◽  
Yuta Murata ◽  
Hironori Marubayashi ◽  
Shuichi Nojima ◽  
Junko Morikawa ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Liquid Crystalline ◽  
Mean Free Path ◽  
Heat Conducting ◽  
Covalent Bonds ◽  
Crystalline Orientation ◽  
Conductive Materials ◽  
Polymeric Chains ◽  
High Thermal Diffusivity ◽  
M13 Phage

Polymers are generally considered thermal insulators because the amorphous arrangement of the polymeric chains reduces the mean free path of heat-conducting phonons. Recent studies reveal that individual chains of polymers with oriented structures could have high thermal conductivity, because such stretched polymeric chains effectively conduct phonons through polymeric covalent bonds. Previously, we have found that the liquid crystalline assembly composed of one of the filamentous viruses, M13 bacteriophages (M13 phages), shows high thermal diffusivity even though the assembly is based on non-covalent bonds. Despite such potential applicability of biopolymeric assemblies as thermal conductive materials, stability against heating has rarely been investigated. Herein, we demonstrate the maintenance of high thermal diffusivity in smectic liquid crystalline-oriented M13 phage-based assemblies after high temperature (150 °C) treatment. The liquid crystalline orientation of the M13 phage assemblies plays an important role in the stability against heating processes. Our results provide insight into the future use of biomolecular assemblies for reliable thermal conductive materials.

Regression models based on experimental data

2014 ◽  
Vol 34 (9) ◽  
pp. 570-572
Author(s):  
Yu. N. Polyanchikov ◽  
E. M. Frolov ◽  
D. S. Klyuikov
Keyword(s):  
Experimental Data ◽  
Regression Models

Investigation of the process of combustion of homogeneous condensed systems reinforced with heat-conducting wires

1977 ◽  
Vol 13 (3) ◽  
pp. 386-388
Author(s):  
V. P. Belov ◽  
V. F. Besedovskii ◽  
A. Ya. Rumyantsev ◽  
G. G. Shelukhin
Keyword(s):  
Heat Conducting ◽  
Condensed Systems

Regression models to predict herbage production and digestibility in a non-regular sequence of cuts

1979 ◽  
Vol 92 (3) ◽  
pp. 575-585 ◽  
Author(s):  
P. R. Edelsten ◽  
A. J. Corrall
Keyword(s):  
Experimental Data ◽  
Regression Models ◽  
Regular Sequence ◽  
Model Parameters ◽  
Yield Model ◽  
Cutting Interval ◽  
Time Of Year ◽  
Cutting Experiments ◽  
Cutting Strategy ◽  
Good Agreement

SUMMARYRegression models were constructed to predict the yields and digestibilities of herbage cut in different sequences of harvests.The yield model used a seasonal production curve modified by the effects of defoliation. Values for the model parameters were obtained by fitting the model to experimental data using a non-linear regression procedure. When these parameters were used, to predict treatment effects in another series of experimental data, good agreement was obtained. The digestibility model incorporated the effect on digestibility time of year, regrowth time and yield.Using the models to interpolate between the results of cutting experiments, annual yields were shown to increase with the date of first cut and also with the interval between subsequent cuts, whereas the average digestibility of the harvested material ecreased with the date of first cut and with the subsequent cutting interval. Finally, a procedure was devised for combining the two models in order to find an optimum cutting strategy for a hypothetical animal production system.

Molecular dynamics study of solid argon with N2, O2, and CO impurities

1982 ◽  
Vol 60 (9) ◽  
pp. 1365-1370 ◽  
Author(s):  
Shūichi Nosé ◽  
Michael L. Klein
Keyword(s):  
Experimental Data ◽  
Molecular Dynamics ◽  
Melting Point ◽  
Diatomic Molecules ◽  
Power Spectra ◽  
Preferred Orientation ◽  
Molecular Dynamics Calculations ◽  
Solid Argon

Molecular dynamics calculations employing atom–atom (exp-6) potentials are reported for solid argon in which 5% of the lattice sites are occupied by diatomic molecules. At temperatures close to the melting point (T ~ 80 K) the molecules are reorienting rapidly with no preferred orientation. Upon cooling, however, a distinct preference is observed for the crystallographic [Formula: see text] direction. Power spectra that characterize the translational and reorientational motions in the system have been evaluated. The results are discussed in light of available experimental data.

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