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Title: The yield stress of foamy sands

Journal Article · · Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 202(1):53-62

The yield stress of a mixture of foam and solids, or foamy sand, was investigated theoretically using 2D periodic model. The range of solid fractions considered was from about 40 to 68%. The yield stress of a foamy sand increases with gas fraction at a given solid fraction and increases with solid fraction at a given gas fraction. At a fixed fraction of solid plus gas, yield stress is relatively insensitive to gas or solid fraction alone. There exists a maximum liquid fraction above which the yield stress disappears. These trends agree with those reported for foamy sands encountered in tunneling through soft sediments and proppant-laden fracturing fluids used in the petroleum industry.

Research Organization:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-76RL01830
OSTI ID:
15001429
Report Number(s):
PNNL-13606; KP1301020; TRN: US200404%%173
Journal Information:
Colloids and Surfaces. A, Physicochemical and Engineering Aspects, 202(1):53-62, Vol. 202, Issue 1
Country of Publication:
United States
Language:
English

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