Research on transient flow resistance of two-phase in narrow rectangular channel under rolling motions
Abstract
The additional force arising from rolling motions effects the change of two-phase flow resistance. Experimental studies of the characteristics of air-water mixture flow resistance in narrow rectangular channel(40 × 1.4mm2)in rolling motions were carried out with the rolling periods and angles of 8s, 12s, 16s, and 10°, 15°, 30°, respectively. The experimental results showed that the transient frictional factor changed periodically. The variation of rolling frictional factor with time is closely related to the mass quality, the two-phase Reynolds number, rolling period and amplitudes. The larger of mass quality and rolling amplitude and the small rolling period, the larger of fluctuation amplitude of frictional pressure drop were. A new correction for predicting the transient frictional factor of two-phase was proposed with a good accuracy.
- Publication:
-
7th International Symposium on Multiphase Flow, Heat Mass Transfer and Energy Conversion
- Pub Date:
- July 2013
- DOI:
- 10.1063/1.4816847
- Bibcode:
- 2013AIPC.1547...21J
- Keywords:
-
- channel flow;
- friction;
- rolling;
- two-phase flow;
- 44.15.+a;
- 46.55.+d;
- 47.15.Rq;
- 47.55.-t;
- Channel and internal heat flow;
- Tribology and mechanical contacts;
- Laminar flows in cavities channels ducts and conduits;
- Multiphase and stratified flows