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Solid Density (solid + density)

Distribution by Scientific Domains
Chemistry75%

Selected Abstracts

THERMAL PROPERTIES OF SHRIMPS, FRENCH TOASTS AND BREADING

JOURNAL OF FOOD PROCESS ENGINEERING, Issue 1 2000
M.O. NGADI
ABSTRACT Thermal properties of fried products namely butterfly and popcorn shrimp, French toast and breading were determined for a wide range of temperature (20 to 140C), moisture content (3.3 to 87.4% w.b.) and fat content (0.005 to 0.618 kg/kg dry weight) typically encountered during deep-fat frying. Solid density of the products ranged from 1034 to 1508 kg/m3. Solid density increased with decreasing moisture content of product. Thermal conductivity ranged from 0.03 to 0.85 W/mC. Specific heat ranged from 1.51 to 4.67 kJ/kgC. The results were in the range of published data for similar products. Temperature, moisture and fat content affected variations of thermal conductivity and specific heat. Regression equations were used to fit experimental data. [source]

Entrainment Rate of Coarse Particles at Different Temperatures in Gas Fluidized Beds

THE CANADIAN JOURNAL OF CHEMICAL ENGINEERING, Issue 2 2007
Jeong-Hoo Choi
Abstract Based on available experimental data, an empirical relationship is developed for the entrainment rate of coarse particles at the exit of gas-fluidized beds, including the effects of fine particles in the bed, temperature, gas velocity, particle size and density, and column size. It predicts well the influence of fine particles on the entrainment rate of coarse particles, taking into account the momentum of the fine particles and the effect of superficial gas velocity. It also accounts well for the influence of temperature at different solid densities and gas velocities. À partir de données expérimentales disponibles, on a mis au point une relation empirique pour la vitesse d'entraînement des grosses particules à la sortie des lits fluidisés de gaz, incluant les effets des particules fines dans le lit, la température, la vitesse de gaz, la taille et la masse volumique des particules ainsi que la dimension de la colonne. Cette relation prédit bien l'influence des particules fines sur la vitesse d'entraînement des grosses particules, en tenant compte de la quantité de mouvement des particules fines et de l'effet de la vitesse de gaz superficielle. Elle prend bien en compte également l'influence de la température à différentes masses volumiques de solides et vitesses de gaz. [source]

A numerical scheme for strong blast wave driven by explosion

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS, Issue 12 2006
Kaori Kato
Abstract After the detonation of a solid high explosive, the material has extremely high pressure keeping the solid density and expands rapidly driving strong shock wave. In order to simulate this blast wave, a stable and accurate numerical scheme is required due to large density and pressure changes in time and space. The compressible fluid equations are solved by a fractional step procedure which consists of the advection phase and non-advection phase. The former employs the Rational function CIP scheme in order to preserve monotone signals, and the latter is solved by interpolated differential operator scheme for achieving the accurate calculation. The procedure is categorized into the fractionally stepped semi-Lagrangian. The accuracy of our scheme is confirmed by checking the one-dimensional plane shock tube problem with 103 times initial density and pressure jump in comparison with the analytic solution. The Sedov,Taylor blast wave problem is also examined in the two-dimensional cylindrical coordinate in order to check the spherical symmetry and the convergence rates. Two- and three-dimensional simulations for the blast waves from the explosion in the underground magazine are carried out. It is found that the numerical results show quantitatively good agreement with the experimental data. Copyright © 2006 John Wiley & Sons, Ltd. [source]

A monoclinic polymorph of bis(tert -butyl­per­thio­phosphonic) dianhydride

ACTA CRYSTALLOGRAPHICA SECTION C, Issue 3 2000
Burkhard Ziemer
In comparison with the known orthorhombic polymorph oftrans -2,4-di- tert -butyl-2,4-dithioxo-1,3-di­thia-2,4-diphosph­etane, C8H18P2S4, (I) [Shore, Pennington, Noble & Cordes (1988). Phosphorous Sulfur, 39, 153,157], the new crystallographic modification is monoclinic and the corresponding solid density is markedly higher. In both structures, the mol­ecules have 2/m symmetry imposed by space-group symmetry and all corresponding bond lengths and angles are equal within the limits of errors. [source]