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3D simulation of incompressible flow around a rotating turbulator: Effect of rotational and direction speed

Zoubai Elhadi, Laidoudi Houssem, Tlanbout Ismail, Makinde Oluwole Daniel

Archives of Thermodynamics

2023

Vol. 44, no 2

139--157

This paper presents new results for the dynamic behaviour of fluid around a rotating turbulator in a channel. The turbulator has a propeller form which is placed inside a flat channel. The research was carried out using 3D numerical simulation. The rationale of the experiment was as follows: we put a propeller-turbulator inside a flat channel, and then we insert a water flow inside the channel. The turbulator rotates at a constant and uniform speed. The main points studied here are the effect of the presence of turbulator and its rotational direction on the flow behaviour behind the turbulator. The results showed that the behaviour of flow behind the turbulator is mainly related to the direction of turbulator rotating. Also, the studied parameters affect coefficients of drag force and power number. For example, when the turbulator rotates in the positive direction, the drag coefficient decreases in terms of rotational speed of the turbulator, while the drag coefficient increases in terms of rotational speed when the turbulator rotates in the negative direction.

Modelowanie przepływu zawiesiny lodowej w rurach prostych

Niezgoda B.

Inżynieria Chemiczna i Procesowa

2004

T. 25, z. 3/2

1387-1392

W pracy przedstawiono własne wyniki badań doświadczalnych oporów przepływu zawiesiny lodowej przez rury proste oraz zaproponowano modele przepływu dla tego czynnika.

In the paper the results of experiments of the pressure losses for ice slurry flowing in straight tube have been presented. The various model of ice slurry flow have been suggested. @eng

Correction of the straight pipe finite element matrices caused by pressured flowing fluid

Dupal J.

Zeszyty Naukowe Katedry Mechaniki Stosowanej / Politechnika Śląska

2003

z. 22

23-26

The paper deals with a correction of mass, stiffness and damping matrices of the straight pipeline finite element. The growing fluid flow velocity causes a decrease of eigenfrequencies. When some eigenfrequency achieves zero value the whole system is at the stability boundary. Crossing the corresponding velocity boundary a loss of stability occurs.