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�������պ����ѧѧ�� 2010, Vol. 36 Issue (1) :43-47    DOI:
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Ҧ��Ƽ, �α���, �� ö*
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Effects of dynamic load on flow resistance, void fraction and heat transfer of steam-water two-phase flow in pipes
Yao Qiuping, Song Baoyin, Zhao Mei*
College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016,China

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Abstract�� An experimental investigation using a rotating platform was performed to obtain the flow and heat transfer characteristics of single-phase water and two-phase pipe boiling water under dynamic load in present work. By changing the parameters, such as rotation speed, inlet temperature, flow rate, and so on, the flow and heat transfer data of single-phase water and two-phase boiling water flow under static and dynamic conditions were obtained. The image of two-phase flow patterns under dynamic load was obtained with a video camera. The results show that as the direction of the dynamic load is opposite to the flow direction, the greater the dynamic load, the higher the outlet pressure in test section and the flow resistance, and the lower the liquid flow rate, the void fraction, and the heat gained by fluid. Therefore, the dynamic load will block the fluid flow, enhance heat dissipation toward the ambient environment and reduce the heat transfer to the two-phase boiling fluid.
Keywords�� dynamic load   flow pattern   boiling heat transfer   experimental research   steam-water two-phase flow     
Received 2009-01-05;
Fund:

������Ȼ��ѧ����������Ŀ(50576035); �ߵ�ѧУ��ʿѧ�Ƶ�ר����л���������Ŀ(20040287017)

About author: Ҧ��Ƽ(1982-),Ů,���ս�����,��ʿ��,yiaoqiuping@163.com.
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Ҧ��Ƽ, �α���, �� ö.���ضԹ�����ˮ���������衢��϶�ʺʹ��ȵ�Ӱ��[J]  �������պ����ѧѧ��, 2010,V36(1): 43-47
Yao Qiuping, Song Baoyin, Zhao Mei.Effects of dynamic load on flow resistance, void fraction and heat transfer of steam-water two-phase flow in pipes[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2010,V36(1): 43-47
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