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Underground oil water movement is affected by the structural characteristics of sand bodies (Yin et al. 2013).
Based on the study of characteristics of sand bodies, four superimposed sand models and a two-region seepage model are put forward.
The coupled CFD DEM tool is first benchmarked by two classic geomechanics problems where analytical solutions are available, and is then employed to investigate the characteristics of sand heap formed in water through hopper flow.
The corresponding variation of porous characteristics of sand column is observed by scanning electron microscope (SEM) and indicated that the cementitious materials between quartz sand are mainly irregular sphere clusters in shape.
The concept of single sand body, a relatively independent sand body element with related geological genesis in its development that reflects the sedimentary characteristics of sand body, the characteristics of waterflooding development and the distribution of remaining oil to an extent, has been widely used (Miall 1985 , 1988.
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In view of the fact that the relative breakage is influenced by many of the sand parameters, the model developed in the present study should be very useful for predicting the crushing characteristics of sands.
The crushing strength and hence the breakage characteristics of sands are mainly affected by its particle morphology (shape, size, angularity), particle composition (void ratio and gradation), loading conditions and the mineralogical composition.
The surfaces bear ripples from wind as well as warty marks characteristic of sand blown across a slightly damp surface.
The results showed that the main causes of sand-layer collapse are the intrinsic characteristics of the sand layer itself.
This paper reports the study on determination of the effect of different rates of biochar based on their size fractions on water retention characteristic of sand-based rootzone mixture characteristic for natural turfgrass rootzone.
Based on the lateral distribution characteristics of the sand bodies in the cross section, the sand bodies in study area are suggested to have the following features: Open image in new window Fig. 10 Cross section of Chang 7 and Chang 6 members.
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Justyna Jupowicz-Kozak
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