PENGARUH VARIASI JARAK ALUR SETENGAH LINGKARAN TERHADAP PENGUATAN VORTENG DAN PENURUNAN TEKANAN PADA SALURAN BERPENAMPANG SEGI EMPAT
Abstract: This research was
done by implementing a closed square cross section channel, where the bottom surface
of the channel
was semicircle transverse
grooved. The frequency
of flow oscillation measurement
was done by setting up a resistance sensor that is Wheatstone bridge. A
resistor of the Wheatstone bridge is place in to a manometer which was filled
by water. The manometer is connected to the channel while the sensor is
connected to ADC. A U manometer was used to measure the static pressure. Both
measurements were done together at several Reynold number.
Based on the result it is seen that the maximum Strouhal number at
Reynold number of 950. Vortex strength
increases when Strouhal
number increase where
the largest vortex strength occurs at the smallest
grooved distance with the increase of pressure drop. Oscillating shear stress
increase with the
increase of Reynold
number. This phenomena
indicated that highly transport
momentum occurs as the Reynold number increase which it is contributed to the
vortex strength and fluid exchange.
Penulis: Purnami
Kode Jurnal: jptmesindd100158
