Results 201 to 210 of about 25,282 (251)

Exothermal and endothermal effects in porous titanium-nickel alloys

Technical Physics Letters, 2001
It was found that the phase transitions in porous titanium-nickel alloys are characterized by an extended temperature interval of heat release (on cooling) and heat absorption (on heating). The total heat released and absorbed in porous titanium-nickel alloys markedly exceeds that in the analogous cast alloys.
V. N. Khodorenko, V. É. Gyunter, A. N. Monogenov, Yu. F. Yasenchuk   +3 more
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Prediction of the effectiveness factor and selectivity for highly exothermic reactions

Chemical Engineering Science, 1970
Abstract The need to produce a simple but accurate model for determining the effectiveness factors and selectivities for complex reaction schemes has led many authors to make convenient but arbitrary simplifying assumptions in the formulation of their models.
C. McGreavy, J.M. Thornton
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Effect of starch-based admixtures on the exothermic process of cement hydration

Construction and Building Materials, 2021
Abstract The effect of three types of starch-based admixtures, namely glucose and its derivatives, soluble dextrin with various degree of polymerization and a novel starch-based temperature rise inhibitor (TRI) with various degree of starch acidification on the exothermic process of cement hydration has been investigated through the calorimetry ...
Yu Yan, Rui Wang, Wenbin Wang, Cheng Yu, Jiaping Liu   +4 more
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Exothermic effect during polymerization of polymethyl methacrylate

Journal of Materials Science Letters, 1985
Etude du degagement de chaleur lors du durcissement d'un melange monomere polymere utilise en ...
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Convective effects in enclosed, exothermically reacting gases

International Journal of Heat and Mass Transfer, 1974
Abstract The consequences of the occurrence of convection when exothermic chemical reactions take place in a gaseous medium enclosed in a horizontal circular cylinder are investigated by means of a numerical integration of the governing fluid-dynamical equations using an A.D.I. technique.
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Effects of size and dilution on dynamic properties of exothermic centers

Combustion and Flame, 1975
Abstract In a further examination of the concept of exothermic centers, we have calculated the effects of size and dilution of exothermic centers upon the dynamic properties of a combusting H2O2 mixture. The computations were carried out for a stoichiometric hydrogenoxygen mixture at an initial state of p0 = 3.24 atm and T0 = 1335 °K, with argon as
L.M. Cohen, A.K. Oppenheim
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The effect of mechanical activation on highly exothermic powder mixtures

Solid State Ionics, 2001
Abstract The formation of MoSi 2 by ball milling a mixture of Mo and Si powders can take place according to a self-propagating reaction. The mechanical activation that leads to the initiation of this process, is investigated by structural and thermal analysis of samples milled for periods shorter than the ignition time. It is shown that the ignition
L Takacs, V Soika, P Baláž
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Exothermal Effect during Carbon Fibre Thermal Stabilization

1991
Theoretical and experimental investigations of the heat exchange during thermal stabilization of the web made of pitch fibres and under the conditions of exothermal heat availability are conducted.
S. I. Chaplinsgi, L. M. Pidtilok, L. P. Gorelaya, YU. F. Chaly   +3 more
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A computational technique for the evaluation of dynamic effects of exothermic reactions

Combustion and Flame, 1975
Abstract The paper presents a computational technique for the analysis of nonsteady flow fields generated by exothermic reactions in a compressible medium. This is obtained by numerical integration of the set of rate equations of chemical kinetics combined with the set of conservation equations of nonsteady gasdynamics expressed in a Lagrangian form.
L.M. Cohen, J.M. Short, A.K. Oppenheim
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Exothermicity and Relaminarization Effects in Unsteady Reactive Square Jets

Combustion Science and Technology, 1996
Abstract We present results of numerical simulations of the near field of unsteady reactive square jets. The jets studied are compressible (subsonic) and consist of hydrogen diluted in nitrogen emerging into a quiescent background of oxygen also diluted in nitrogen.
F. F. GRINSTEIN, K. KAILASANATH
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