Friction Factor Measurements in an Equally Spaced Triangular Tube Array

Vassallo P, Symolon P

关键词: FRICTION FACTOR;    GEOMETRY;    HYDRAULICS;    REYNOLDS NUMBER;    VELOCITY;    WATER;   

DOI  :  10.2172/903201
RP-ID  :  LM-07K012
PID  :  OSTI ID: 903201
Others  :  TRN: US200720%%209

学科分类：工程和技术（综合）

美国|英语

来源: SciTech Connect

【 摘 要 】

Friction factor data for adiabatic cross-flow of water in a staggered tube array was obtained over a Reynolds number range (based on hydraulic diameter and gap velocity) of about 10,000 to 250,000. The tubes were 12.7mm (0.5 inch) outer diameter, in a uniformly spaced triangular arrangement with a pitch-to-diameter ratio of 1.5. The friction factor was compared to several literature correlations, and was found to be best matched by the Idelchik correlation. Other correlations were found to vary significantly from the test data. Based on the test data, a new correlation is proposed for this tube bundle geometry which covers the entire Reynolds number range tested.