Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes

DING Ming; YAN Changqi; SUN Licheng

Mar. 2007

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DING Ming, YAN Changqi, SUN Licheng. Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes[J]. Nuclear Power Engineering, 2007, 28(1): 68-71.

Citation:

DING Ming, YAN Changqi, SUN Licheng. Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes[J]. Nuclear Power Engineering, 2007, 28(1): 68-71.

DING Ming, YAN Changqi, SUN Licheng. Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes[J]. Nuclear Power Engineering, 2007, 28(1): 68-71.

Citation:

DING Ming, YAN Changqi, SUN Licheng. Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes[J]. Nuclear Power Engineering, 2007, 28(1): 68-71.

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Experimental Study of Flow Friction Characteristics of Integral Pin-fin Tubes

1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing, 100084;
2. Harbin Engineering University, Harbin, 150001

Received Date: 2005-10-20
Rev Recd Date: 2006-02-23

Available Online: 2025-07-21

Abstract

Abstract

Friction characteristics of integral pin-fin tubes,through which lubricating-oil flowed vertically,were studied experimentally.Effects of the pitch,the height of fins and the machining direction on friction coefficient were analyzed.The experimental results showed that the friction coefficient of the integral pin-fin tube was obviously lager than that of smooth tube.Compared with other influential factors,the effect of the height of fins was dominant.Because the three-dimensional pin fin could disturb and destroy the boundary layer,when the Reynolds Number reached 200~300,the friction coefficient curve began to bend,that was,a turning point was appeared in the friction coefficient curve.
- Integral pin-fin tube,
- Lubricating-oil,
- Friction characteristic