Vortex effects in Ranque-Hilsh vortex pipes

Аuthors

Kochetkov Y. M.^1*, Borovik I. N.^2**, Podymova O. A.^1***, Mavrov V. A.^1****, Ishaev R. O.^1*****

1. Keldysh Research Centre, 8, Onezhskaya str., Moscow, 125438, Russia
2. Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: swgeorgy@gmail.com
**e-mail: borovik.igor@mai.ru
***e-mail: toolgapodymova@yandex.ru
****e-mail: vasiliy.mavrov@yandex.ru
*****e-mail: rin9244@yandex.ru

Abstract

The paper presents the results of computational, experimental and analytical studies of gas-dynamic processes in Ranque-Hilsch vortex tubes. The presented review considers the relevance and need for employing vortex effect for aerospace engineering. It reveals the necessity for vortex tubes with varying geometrical dimensions design for the purpose of operation range enhancement. The authors developed vortex pipe 3D model in SolidWorks system. They realized a viscous gas in vortex tube computation engineering method, and demonstrated its implementation results in gas-dynamics computing FlowSimulation pack. To solve this problem Reynolds averaged Navier-Stokes system (RANS) of equations was used in this work. All computations were performed with orthogonal computing net using finite volume method. Two-parameter model of κ — ε type allowing sufficient flow core resolution was used as turbulence model. Several basic vortex effects, such as injection, heat stratification and vortex inversion, were obtained by computation. All calculation were performed for various structural versions. A series of experiments was conducted with custom-made experimental setup. Processing of the obtained results lead to obtaining hot and cold flows productivity optimums, injection ratio, temperature stratification, as well as adiabatic and temperature efficiency.

The experimental results fully confirmed the vortex effects of obtained by engineering computational method. The authors suggest new differential equations for parameters computation in these tubes. The obtained equations establish relation with flow rotation and whirling, as well as explain the enthalpy effect. Computational and experimental as well as analytical studies should continue with regard to optimal structural concept.

Keywords:

SolidWorks, pneumatic-hydraulic circuit, stratification effect, Ranque-Hilsch tube, enthalpy defect

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