Abstract Exploration of confined swirled flows in the former USSR and present-day Russia has a long history and is presented by numerous publications, mostly written in Russian. The obtained results have been put to practical use in different areas of chemical, energy, and processing industries. In view of the process intensification concept, such characteristics of confined swirled flows may be considered unique: high centrifugal gravity, elongation of trajectories, the presence of internal separation zones, energy separation phenomena, and efficient mass/heat transfer in the absence of any moving parts. For instance, high gravity provides an excellent opportunity for multiphase flow stabilization, preventing the appearance of nonuniformities and stability loss, while enhancement of various driving forces acting on the reaction medium takes place. This review is devoted to outlining the main research trends and to discuss the most essential practical implementations in the subject matter done up until now. It is not foreseen to embrace the whole area of swirled flow investigations in the world, but only covers most of the significant ideas and applications contributed in by former Soviet and Russian scientists and engineers. Shortcomings and difficulties of using swirled flows are also briefly discussed.

中文翻译：

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化学工程中的密闭多相涡流

摘要 前苏联和当今俄罗斯对封闭涡流的探索有着悠久的历史，并且在众多出版物中都有介绍，其中大部分是用俄语撰写的。所得结果已在化工、能源和加工工业的不同领域得到实际应用。鉴于过程强化概念，受限涡流的这些特征可能被认为是独一无二的：高离心重力、轨迹伸长、内部分离区的存在、能量分离现象以及在没有任何运动的情况下有效的传质/传热部分。例如，高重力为多相流稳定提供了极好的机会，防止出现不均匀性和稳定性损失，同时增强作用在反应介质上的各种驱动力。这篇综述致力于概述主要的研究趋势，并讨论迄今为止完成的主题中最重要的实际实施。预计不会涵盖世界上旋流研究的整个领域，而仅涵盖前苏联和俄罗斯科学家和工程师贡献的大部分重要思想和应用。还简要讨论了使用旋流的缺点和困难。