The Twente turbulent Taylor-Couette (T3C) facility: Strongly turbulent (multiphase) flow between two independently rotating cylinders

• Published in: arXiv.org 2011-02
• Main Authors: Dennis P M van Gils, Gert-Wim Bruggert, Lathrop, Daniel P, Sun, Chao, Lohse, Detlef
• Format: Article
• Language: English
• Subjects: Couette flow; Fluid dynamics; Fluid flow; Friction; Friction drag; Hydrophobicity; Imaging techniques; Liquid flow; Load cells; Rotating cylinders; Rotation; Sensors; Skin friction; Temperature control; Turbulent flow; Two phase flow; Working fluids
• ISSN: 2331-8422
• DOI: 10.48550/arxiv.1011.1572

A new turbulent Taylor-Couette system consisting of two independently rotating cylinders has been constructed. The gap between the cylinders has a height of 0.927 m, an inner radius of 0.200 m, and a variable outer radius (from 0.279 to 0.220 m). The maximum angular rotation rates of the inner and outer cylinder are 20 and 10 Hz, respectively, resulting in Reynolds numbers up to 3.4 x 10^6 with water as working fluid. With this Taylor-Couette system, the parameter space (Re_i, Re_o, {\eta}) extends to (2.0 x 10^6, {\pm}1.4 x 10^6, 0.716-0.909). The system is equipped with bubble injectors, temperature control, skin-friction drag sensors, and several local sensors for studying turbulent single-phase and two-phase flows. Inner cylinder load cells detect skin-friction drag via torque measurements. The clear acrylic outer cylinder allows the dynamics of the liquid flow and the dispersed phase (bubbles, particles, fibers, etc.) inside the gap to be investigated with specialized local sensors and nonintrusive optical imaging techniques. The system allows study of both Taylor-Couette flow in a high-Reynolds-number regime, and the mechanisms behind skin-friction drag alterations due to bubble injection, polymer injection, and surface hydrophobicity and roughness.