نوع فایل:PDF تعداد صفحات :13 سال انتشار : 1394 چکیده This research is an attempt to investigate wind tunnel tests to measure the minimum values of force coefficients in three cylinders of identical squared sections in an equilateral-triangular arrangement when subjected to a cross-flow. These tests were conducted for seven spacing ratios varying from 3.1 to 1.1 at subcritical Reynolds number of 1..7*3.4. The pressure is measured by an electronic pressure ...