Abstract
Research and analysis of the most currently known swirling high-flow systems have shown that a centrifugal nozzle with four nozzle inlets has the least loss and the best effect of swirling the flow. Three-dimensional working flow space was modeled for nozzle-type nozzle input models, adapting the theory of centrifugal injector to the task of designing a nozzle input of a passive tangential vortex heat generator, and choosing initial water flow parameters in CAD COMPAS 3D. As a reference model, a vortex pipe with nozzle input developed by A. P. Merkulov was adopted and calculated. The calculated area was the volume of the inner space of the vortex heat generator. The surface of the calculation area was a collection of flat polygons—facets. In the study of hydrodynamic characteristics, the interaction of flows in the area of the location of the braking device and at the exit of the swirling device was considered in detail. The study of the influence of the geometry of the working area of the heat generator on the thermal efficiency of its operation was carried out with unchanged linear characteristics of the working chamber and the vortexing device. As a mathematical model of the description of motion, the “weakly compressed liquid” model was chosen, which allows you to model the flow at large Reynolds numbers and modes in which cavitation is possible. For the numerical solution of the equations of the standard mathematical model, a rectangular adapted locally crushed grid is adopted. As a result of the numerical experiment for the proposed jet-swirler, distributions of velocities, pressure, heat flow, temperature of liquid at all points of the design space were obtained, which made it possible to evaluate the efficiency of the design of the alternative jet-swirler and the vortex pipe as a whole. The flow temperature increased by an average of 25 °C.
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Livshits, S., Yudina, N., Lebedev, R., Enikeeva, S., Panamarenka, E. (2022). Numerical Study of the Fluid Flow in a Passive Tangential Vortex Tube. In: Irina, A., Zunino, P. (eds) Proceedings of the International Symposium on Sustainable Energy and Power Engineering 2021. SUSE 2021. Lecture Notes in Mechanical Engineering. Springer, Singapore. https://doi.org/10.1007/978-981-16-9376-2_26
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DOI: https://doi.org/10.1007/978-981-16-9376-2_26
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