Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 10 of 10
Full-Text Articles in Engineering
Two-Temperature Discrete Model For Nonlocal Heat Conduction, Sergey Sobolev
Two-Temperature Discrete Model For Nonlocal Heat Conduction, Sergey Sobolev
Sergey Sobolev
The two-temperature discrete model for heat conduction in heterogeneous media is proposed. It is shown that the discrete model contains as limiting cases both hyperbolic and parabolic heat conduction equations for propagative and diffusive regimes, respectively. To obtain these limiting cases two different laws of continuum limit have been introduced. The evolution of the two-temperature system comprises three stages with distinct time scales : fast relaxation of each subsystem to local equilibrium, energy exchange between the subsystems and classical hydrodynamics.
Supplemental Reply Comments To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Supplemental Reply Comments To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Ron D. Katznelson
No abstract provided.
Reply Comments To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Reply Comments To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Ron D. Katznelson
No abstract provided.
Enhancement Od Dynamic Stability By Coordinated Control Of Static Var Compensators, Arturo Roman Messina, Brian C. Cory
Enhancement Od Dynamic Stability By Coordinated Control Of Static Var Compensators, Arturo Roman Messina, Brian C. Cory
A. R. Messina
No abstract provided.
Bioreactor Design For Insect Cell Culture Engineering: A Review, Janusz J. Malinowski, Andrew J. Daugulis
Bioreactor Design For Insect Cell Culture Engineering: A Review, Janusz J. Malinowski, Andrew J. Daugulis
Janusz J. Malinowski
No abstract provided.
Comments Submitted To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Comments Submitted To Fcc Notice Of Inquiry On Consumer Electronics Compatibility Rules, Ron D. Katznelson
Ron D. Katznelson
No abstract provided.
Dynamic Modelling Of Industrial So2 Oxidation Reactors Part I. Model Of ‘Hot’ And ‘Cold’ Start-Ups Of The Plant, Krzysztof J. Gosiewski
Dynamic Modelling Of Industrial So2 Oxidation Reactors Part I. Model Of ‘Hot’ And ‘Cold’ Start-Ups Of The Plant, Krzysztof J. Gosiewski
Krzysztof Gosiewski
The paper describes a comparison of some results computed using a mathematical dynamic model of a single reactor bed with real temperature unsteady state transients, measured in a large industrial scale SO2 oxidation reactor. Problems of the dynamic modelling of complete oxidation plants, including a heat exchange section and a start-up installation are discussed in the next section of the paper. As a basis for comparison some start-up dynamic transients were analysed. Tha analysis shows that the model (two-phase model for heat transfer and homogeneous model for mass transfer) is sufficient for qualitative analysis of the problem. The problems of …
Dispersed-Phase Stress Tensor In Flows Of Bubbly Liquids At Large Reynolds Numbers, Ashok S. Sangani, A. K. Didwania
Dispersed-Phase Stress Tensor In Flows Of Bubbly Liquids At Large Reynolds Numbers, Ashok S. Sangani, A. K. Didwania
Ashok S. Sangani
We derive averaged equations for large Reynolds number laminar flows of gas–liquid dispersions accounting for slowly varying spatial and temporal fields. In particular, we obtain an exact expression for the dispersed-phase stress tensor to be used in the force balance equation for gas bubbles and illustrate its application by evaluating the stress tensor for a few special cases. It is shown that the dispersed-phase stress tensor gradient with respect to the mean relative motion or the void fraction for the uniformly random bubbly liquids under conditions of large Reynolds number laminar flows is negative and thus has a destabilizing influence …
Linear Acoustic Properties Of Bubbly Liquids Near The Natural Frequency Of The Bubbles Using Numerical Simulations, Ashok S. Sangani, R. Sureshkumar
Linear Acoustic Properties Of Bubbly Liquids Near The Natural Frequency Of The Bubbles Using Numerical Simulations, Ashok S. Sangani, R. Sureshkumar
Ashok S. Sangani
We consider the problem of determining linear acoustic properties of bubbly liquids near the natural frequency of the bubbles. Since the effective wavelength and attenuation length are of the same order of magnitude as the size of the bubbles, we devise a numerical scheme to determine these quantities by solving exactly the multiple scattering problem among many interacting bubbles. It is shown that the phase speed and attenuation are finite at natural frequency even in the absence of damping due to viscous, thermal, nonlinear, and liquid compressibility effects, thus validating a recent theory (Sangani 1991). The results from the numerical …
Dynamic Simulations Of Flows Of Bubbly Liquids At Large Reynolds Numbers, Ashok S. Sangani, A. K. Didwania
Dynamic Simulations Of Flows Of Bubbly Liquids At Large Reynolds Numbers, Ashok S. Sangani, A. K. Didwania
Ashok S. Sangani
Results of dynamic simulations of bubbles rising through a liquid are presented. The Reynolds number of the flow based on the radius and the terminal speed of bubbles is large compared to unity, and the Weber number, which is the ratio of inertial to surface tension forces, is small. It is assumed that the bubbles do not coalesce when they approach each other but rather bounce instantaneously, conserving the momentum and the kinetic energy of the system. The flow of the liquid is assumed to be irrotational and is determined by solving the many-bubble interaction problem exactly. The viscous force …