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The characteristic flow pattern with upstream velocity, U0 = 19 m/s (c,d,e)

The characteristic flow pattern with upstream velocity, U0 = 19 m/s (c,d,e)

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Flow across a square cylinder in a tandem arrangement is a shape characterization that is often used in structural engineering, transportation, and heat exchangers, where wind and water loads are one of the main factors that need to be considered in the design because they are associated with loss of energy. This is a problem faced by various indus...

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Context 1
... of the flow pattern characteristics of the computational approach and flow visualization of a square cylinder in tandem arrangement with the addition of a triangular cylinder as a disturbance at the distance ratio M/D 0.05, 0.15, 0.25, 0.35, 0.45, and 0.55 respectively is shown in Figure 4 and Figure 5. For the front side in distance ratio M/D=0.45 cylinder 1 shows greater flow drag due to the application of the triangular cylinder as a disturbance. ...
Context 2
... the front walls of cylinder 1 and cylinder 2 (taping positions 0, 1, 2, 3 and 14, 15, 16, 17) the lowest pressure coefficient is obtained at the ratio of the distance M/D=0.45. This is consistent with the characteristics of the flow pattern in Figure 4 and the pressure contour in Figure 5 which shows that the M/D distance ratio 0.45 is a model that has the lowest flow velocity and pressure contour characteristics on the front wall compared to models with other M/D distance ratios. ...

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Citations

... Penelitian tentang karaketristik tekanan pada sisi upstream dan downstream pada orifice meter dengan cairan viskositas rendah sudah banyak dilakukan oleh peneliti sebelumnya (Habiba et al., 2021;Mahmuddin et al., 2010aMahmuddin et al., , 2010b. Sedangkan pada penelitian ini mempelajari pola tekanan pada sisi up stream dan down stream pada orifice meter dengan aliran 1 fase dan 2 fase. ...
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Penelitian ini bertujuan untuk menggambarkan pola aliran pada daerah upstream dan downstream dengan variasi debit cairan dan udara.Selain itu tujuan penelitian ini adalah untuk mengetahui pola tekanan statis sepanjang saluran uji orifice pada arah upstream dan downstream.Metode yang digunakan adalah dengan menggunakan variasi aliran fluida cair dengan bilangan Re = 2523 dan diperbesar menjadi Re = 2670, Re = 2862, Re = 3055, Re = 3248, dan Re = 3440. Aliran fluida gas yang diinjeksikan dengan debit 0.1 x 10-3 m3/s dan 0.13 x 10-3 m3/s, hal ini dilakukan untuk melihat pola-pola aliran yang akan terjadi. Rasio diameter (?) yang digunakan dalam penelitian ini yaitu 0.62; 0.68; dan 0.81 dengan plat orifice berdiameter 20 mm, 22 mm, 26 mm dan diameter pipa 32 mm. Hasil peneltian menunjukkan bahwa semakin tinggi debit aliran yang melewati orifice maka semakin besar tekanan yang terjadi. Penambahan injeksi udara dengan debit Qudara = 0.1 x 10-3 m3/s dan Qudara = 0.13 x 10-3 m3/s pada debit variasi aliran fluida cair mempengaruhi besarnya tekanan yang melewati plat orifice diameter 20 mm, 22 mm dan 26 mm. Tekanan maksimal yang dihasilkan pada aliran 1 fasa yaitu 102902 Pa pada bilangan Re = 3440 dengan diameter orifice = 20 mm sedangkan tekanan maksimal yang dihasilkan pada aliran 2 fasa yaitu 102820 Pa pada bilangan Re = 3440 dengan diameter orifice = 20 mm.