Single slugs

Fig. 1.5. The aluminium drink can is an innovative product. The body is mode from o single slug of a 3000 series aluminium alloy. The con top is a separate pressing which is fastened to the body by o rolled seam once the can has been filled. There are limits to one-piece construction.

The results show that for a given slug size, a composite slug recovered more crude than a single slug of equivalent size. 

However, this mode of flow usually is limited to conveying distances of L < 500 m. The Group D materials that possess wide size distributions (especially a considerable amount of fines) and/or unusual particle shape (e.g., crushed coal, petroleum coke, crushed bath, rice hulls) usually are not suited to low-velocity conveying. In these cases, the options are dilute-phase or single-slug dense-phase (i.e., these materials usually are too coarse for bypass conveying). However, when long distances are involved, dilute-phase may be the only practical option. 

Single, slug-type release center of plume traveling from source at constant rate... 

Single, slug-type release contaminant only partially soluble no NAPL present... 

Single, slug-type release two or more contaminants required... 

In place of distance measurements, concentration can be used to determine the age of a plume. Assuming that the plume is derived from a single slug-type release of a contaminant which is only partially soluble in groundwater, and not present as an NAPL, then the date upon which the contaminant enters the water table or aquifer is equivalent to that point in time when the concentration of the contaminant approaches its solubility limit ... 

The use of degradation rates to determine the age of a contaminant plume assumes a contaminant from a single, slug-type release, which degrades to a more recalcitrant chemical compound (i.e., trichloroethene degrading to 1,2-dichloroethene), will enter the water table or aquifer at a point in time when none of the daughter product is present in the aquifer ... 

This method assumes that if two or more contaminants were released from a single, slug-type release, the date upon which these contaminants entered the water table or aquifer is equivalent to the time when their relative concentrations were the same as the source material. This method does not require initial concentration information, and is not dependent on changes due to a particular subsurface process (i.e.,... 

Previous experiments consisted of aluminum rods as an aluminum source. This approach was revealed to be unacceptable due to the aluminum oxide forming barriers to liquid diffusion. A single slug of aluminum was substituted for the rods to reduce the effect of the aluminum oxide. 

Referring to Fig. 8, from a force balance between sections 0 and 3, Laird and Chisholm derived Equation (51) foe., a single slug rising in still liquid,... 

Nicklin et al. (N5) have shown that an equation similar to Eq. (5-3) is applicable to slug flow. A single slug rises at a velocity equal to 0.3SVgD. If Eq. (5-3) is modified to allow for a nonuniform velocity profile in the liquid regions between the slugs, an empirical equation results ... 

Mihcakan, I.M., Van Kirk, C.W., 1986. Blending alkahne and polymer solutions together into a single slug improves FOR. Paper presented at the SPE Rocky Mountain Regional Meeting, Billings, 19-21 May. 

Figure 7.16 Pressure drop along a single slug unit, (a) Without film and (b) with film.

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