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首页> 外文期刊>International Journal of Refrigeration >Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants
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Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants

机译：表面活性剂处理的三羟甲基乙烷水合物浆料的减阻特性

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Drag reduction characteristics of trimethylolethane hydrate slurries treated with surfactants have been -investigated. The effects of the surfactant concentration and hydrate fraction of the slurry on drag reduction behaviors were focused on in this paper. The friction coefficient in a pipe flow of hydrate slurries treated with surfactants and the relaxation time of trimethylolethane solution with surfactants were measured. From the results, it was found that the effective drag reduction appears in the cases of high surfactant concentration even in cases of high hydrate fraction. This behavior was supported by the viscosity shear-thickening occurrence reported in the previous study. However, the effective drag reduction disappears in the cases of low surfactant concentration in spite of the shear-thickening occurrence. On this discrepancy, the relaxation time of the solution was measured. It is found that the critical concentration determined from the relaxation time disappearance well corresponds to the limitation of effective drag reduction occurrence.
机译：已经研究了用表面活性剂处理的三羟甲基乙烷水合物浆料的减阻特性。本文重点研究了表面活性剂浓度和浆料中水合物含量对减阻性能的影响。测量了用表面活性剂处理过的水合物浆料在管流中的摩擦系数和表面活性剂对三羟甲基乙烷溶液的弛豫时间。从该结果发现，即使在高水合物含量的情况下，在高表面活性剂浓度的情况下也出现有效的减阻。先前研究中报告的这种粘度剪切增稠现象支持了这一行为。然而，尽管发生了剪切增稠，但在表面活性剂浓度低的情况下，有效的减阻作用仍然消失。在此差异下，测量溶液的弛豫时间。发现从弛豫时间消失井确定的临界浓度对应于有效减​​阻发生的限制。

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