��λ��ֱ��ת�̷��̬��ȵ�ʵ��о�

ժҪ ��ʵ��ķ��Ը�λ��ֱ��ת��ϵ��ת��ڷ��̬��µ��뻻��Խ��о�,��Ҫ�о��ϵ��ת��ŵ��ı仯��¶Ⱥ�ƽ��Ŭ��Ӱ��.��:��ĸı��Ļ��Ӱ��ǳ��,��¶��ʱ��ı仯��ͬ��;��ת��ŵ��ʹ��ƽ��Ŭ��,��ת��ŵ��仯�ķ�ʽ��Ե��¶��ʱ��ı仯��Ĳ�ͬ.

	Service

	�ѱ��Ƽ��
	��ҵ��
	��ù��
	Email Alert
	RSS
	��

�ؼ���� ת�� ̬ ��ϵ��

Abstract�� A gas turbine disk was simplified to be a shrouded rotor-stator system with high-positioned air inflow, the rotor was heated at rim. The rotor diameter was 400?mm and its maximal rotating speed was up to 3000?r/min. Transient heat transfer characteristics of the rotor were investigated experimentally as the rotational Reynolds number and the mass flow rate were changed. The results show: the mass flow rate could always have significant effects on average Nusselt number of the rotor. The rates of temperature vs. time in everyplace are almost same. The rotational Reynolds number has a few effects on averaged Nusselt number in this experimental range. The rate of temperature vs. time at high radius is large than that at low radius under different changes of rotational Reynolds number.

Keywords�� heat transfer rotating disk transient heat transfer coefficient

Received 2003-01-24;

About author: �� (1973-),��,�Ĵ��ɶ��,��ʿ��, luoflug@sina.com.

��ñ��:

��, ��ǿ, ��ˮ͡, ��.��λ��ֱ��ת�̷��̬��ȵ�ʵ��о�[J] ��պ��ѧѧ��, 2004,V30(06): 512-515

Luo Xiang, Xu Guoqiang, Ding Shuiting, Tao Zhi.Experiment investigation on transient heat transfer in rotor-stator system with high-positioned air inflow[J] JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2004,V30(06): 512-515

��ӱ��:

http://bhxb.buaa.edu.cn//CN/ �� http://bhxb.buaa.edu.cn//CN/Y2004/V30/I06/512

[1]	Metzger D, Partipilo V. Single and multiple jet impingement heat transfer on rotating disk . AIAA 89-0174,Reno,1989
[2]	Bunker R S,Metzger D E,Wittig S. Local heat transfer in turbine disk cavities :part��-rotor cooling with radial location injection of coolant[J].ASME J Turbomachinery.1992,114:221-228
[3]	��ǿ,�� ,��ˮ͡,��. ��λ��ֱ��ת��뻻�ȵ�ʵ��о�[J]. ��ն��ѧ��,2000,15(2):164~168 Xu Guoqiang, Tao Zhi, Ding Shuiting, et al. Experimental investigation on flow and heat transfer in shrouded rotating disk with high-positioned air inflow[J]. Journal of Aerospace Power, 2000, 15(2):164~168(in Chinese)
[4]	��ǿ,ղ��,��ˮ͡,��. ��λ��ֱ��ת��ϵ��ת��뻻�ȼ��[J].�ƽ��,2000,21(4):40~43 Xu Guoqiang, Zhan Guozhi, Ding Shuiting, et al. Numerical calculation for flow and heat transfer of a shrouded rotating disk with high-positioned air inlet[J]. Journal of Propulsion Technology, 2000, 21(4):40~43(in Chinese)
[5]	�� ,��,��ǿ. ת�ٷ��̬�仯��Ľ��ת��ƽ��ȵ�Ӱ��[J]. ��ն��ѧ��,2000,15(3):282~290 Luo Xiang, Wang Jianning, Xu Guoqiang. Transient heat transfer characteristics of shrouded rotating disk with variation of rotating speed[J]. Journal of Aerospace Power, 2000, 15(3):282~290(in Chinese)
[6]	�� ,��,��ǿ. ��仯��Ľ��ת��ƽ��ȵ�Ӱ�� . ��ն��ѧ��,2000,15(3):278~281 Luo Xiang, Wang Jianning, Xu Guoqiang, Transient heat transfer characteristics of shrouded rotating disk with unsteady centric air inlet inflow[J]. Journal of Aerospace Power, 2000, 15(3):278~281(in Chinese)