โ Scribed by S. B. Riffat; G. Gan
No coin nor oath required. For personal study only.
Computational fluid dynamics (CFD) was used for predicting k-factors (pressure loss coefficients) for rectangular and flat-oval duct elbows. Prediction results were compared with experimental data from the literature and found to be in good agreement. The difference in the k-factor between a flat-oval elbow and a rectangular elbow is small, given the same cross-sectional area. The elbow k-factor is shown to decrease with increasing duct aspect ratio.
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