Temat: particle packing - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Simulating particle packing for soil porosity investigations
Autorzy:: Czachor, H.
Konstankiewicz, K.
Powiązania:: https://bibliotekanauki.pl/articles/2056984.pdf
Data publikacji:: 1995
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: moisture
packing
grain size
soil
pore
particle packing
capillary pressure
porosity
distribution
Źródło:: International Agrophysics; 1995, 09, 4
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Optimised mix design for normal strength and high performance concrete using particle packing method
Autorzy:: Gopinath, S.
Ramachandra-Murthy, A.
Ramya, D.
Iyer, N. R.
Powiązania:: https://bibliotekanauki.pl/articles/230735.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: beton zwykły
beton wysokowartościowy
metoda ACI
metoda BIS
upakowanie ziaren
upakowanie cząstek
projektowanie mieszanki
wytrzymałość na ściskanie
normal strength concrete
high performance concrete
ACI method
BIS method
particle packing
mix design
compressive strength
Opis:: This paper presents the details of optimized mix design for normal strength and high performance concrete using particle packing method. A critical review of mix design methods have been carried out for normal strength concrete using American Concrete Institute (ACI) and Bureau of Indian Standards (BIS) methods highlighting the similarities and differences towards attaining a particular design compressive strength. Mix design for M30 and M40 grades of concrete have been carried out using ACI, BIS and particle packing methods. Optimization of concrete mix has been carried out by means of particle packing method using EMMA software, which employs modified Anderson curve to adjust the main proportions. Compressive strength is evaluated for the adjusted proportions and it is observed that the mixes designed by particle packing method estimates compressive strength closer to design compressive strength. Further, particle packing method has been employed to optimize the ingredients of high performance concrete and experiments have been carried out to check the design adequacy of the desired concrete compressive strength.
Źródło:: Archives of Civil Engineering; 2011, 57, 4; 357-371
1230-2945
Pojawia się w:: Archives of Civil Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Computational fluid dynamics (CFD) numerical simulation and particle image velocimetry (PIV) measurement of a packed flotation column
Autorzy:: Yan, X.
Chen, Z.
Wang, L.
Powiązania:: https://bibliotekanauki.pl/articles/110183.pdf
Data publikacji:: 2018
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: cyclonic-static microbubble flotation column
computational fluid dynamics
sieve-plate packing
particle image velocimetry
velocity distribution
Opis:: Packing is a useful method to obtain a static separation environment for a high flotation recovery and selectivity. In this study, the single-phase flow field in a packed lab-scale cyclonic-static microbubble flotation column (FCSMC) was investigated by computational fluid dynamics (CFD) simulation. Turbulence model was verified by Particle Image Velocimetry (PIV) experiment; the simulation results obtained by the RSM (Reynolds Stress Model) are closer to the experimental data. Based on this validation, RSM turbulence model was used to obtain the effect of sieve-plate on the hydrodynamic characteristics in the column flotation zone. The results show that the sieve-plate packing arrangement greatly straightens the rotation flow and decreases the turbulence. To further improve the effect of packing, two layers of sieve plates were used, and one diameter (1D = 190 mm) was selected as the reasonable distance between the two layers of sieve plates. To quantitative evaluate the effect of sieve-plate packing, the logarithm of Pdk over the logarithm of Pdo was calculated based on the volume-averaged turbulence dissipation rate, increasing from 24.72 for one layer of sieve-plate packing to 216.96 for two layers of sieve-plate packing. The probability of detachment significantly decreased for two layers of sieve-plate packing, and the recovery efficiency was significantly improved.
Źródło:: Physicochemical Problems of Mineral Processing; 2018, 54, 2; 395-405
1643-1049
2084-4735
Pojawia się w:: Physicochemical Problems of Mineral Processing
Dostawca treści:: Biblioteka Nauki

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