Quasi-Static Heat Transfer in an Experimental Device with a Radial Electro-Structured Fluid Clutch
AbstractIn the paper an experimental device with upper half of a radial electro-structured fluid (ESF) clutch with vertical axis (consisting of a lower stationary disc and upper rotating disc) is examined for constant speed of rotation. The narrow gap between the discs is filled with a viscous liquid, so electro-structural effect is not taken into consideration. Frictional tangential forces in the fluid generate heat which is transferred through the fluid and rotating disc (by conduction) into surrounding air (by convection). A steady state model of heat transfer for the system in question in nondimensional form is built up and solved. Several novelties in approach and solution relative to existing ones are adopted and realized (described in detail in 5 appendices). Analysis of influence of the system parameters upon results of solution is given. For some particular cases theoretical results are compared with experimental ones by means of tables and diagrams and very good agreement is pointed out.