Temat: osrodki porowate - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Przewodnosc hydrauliczna osrodka porowatego w ujeciu statystycznym
Autorzy:: Usowicz, B
Powiązania:: https://bibliotekanauki.pl/articles/1402599.pdf
Data publikacji:: 2001
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: osrodki porowate
porowatosc gleby
woda glebowa
retencja wodna
przewodnosc hydrauliczna
porous medium
soil porosity
soil water
water retention
hydraulic conductivity
Źródło:: Acta Agrophysica; 2001, 53; 177-187
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Statystyczno-fizyczne modele przeplywu masy i energii w osrodku porowatym
Statistical-physical models of mass and energy transfer in porous medium
Autorzy:: Usowicz, B
Powiązania:: https://bibliotekanauki.pl/articles/1402003.pdf
Data publikacji:: 2000
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: gleby
porowatosc gleby
przeplyw wody
osrodki porowate
modele fizyczne
przewodnosc hydrauliczna
przewodnosc elektryczna
przenikalnosc elektryczna
przeplyw masy
przeplyw energii
rachunek prawdopodobienstwa
soil
soil porosity
water flow
porous medium
physical medicine
hydraulic conductivity
electrical conductance
permittivity
mass flow
energy flow
probability theory
Opis:: he exchange of mass and energy taking place in a porous medium is the main goal of studies of many scientific branches and agrophysics belongs to them. This process is measured and calculated as the quantity of mass and energy transferred from one thermodynamic system to another and is to be determined on the basis of its transport properties. A new statistical model of the mass and energy transfer has been formulated in this paper on the bases of the most fundamental conceptions and ideas of mechanics, thermodynamics and electrodynamics. This new model makes possible the description of connection between the properties of the porous medium and the directly measured physical values. The model enabled for consideration of the following porous medium properties:electrical properties of the porous medium from the viewpoint of determination of its salinity on the basis of the measured bulk electrical conductivity and determination of its moisture content from the measurement of the porous medium dielectric constant, hydraulic, pneumatic and diffusive properties of porous medium resulting in determination of its gas and water conductivity as well as in determination of its diffusivity from the water retention curves, thermal properties of the porous medium leading to determination of its thermal conductivity from the basic properties of solid, liquid and gas phases forming this medium. The calculations based on this new statistical model and comparison of the calculated results with the data measured as well as statistical analysis can be a basis to the statement, that this model predicts the mass and energy transfer with the satisfactory accuracy. This procedure confirms correctness of the assumptions introduced and simplifications used during its construction as well as permits for the statement that the parameters were fitted properly.
Źródło:: Acta Agrophysica; 2000, 29; 1-112
1234-4125
Pojawia się w:: Acta Agrophysica
Dostawca treści:: Biblioteka Nauki

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