چکیده مقاله
For study a characteristics of pattern flow in 60º strongly curved bend in open channels, a vast experimental study was done Flow pattern in a 60º sharp bend experimentally and numerically are investigated in this study In the numerical study, the Fluent model by K ε RNG turbulence model was used to predict the turbulence, and the volume of fluid VOF method to simulate the velocity distribution and free surface The models performances are evaluated by different statistical error indexes The results show that the root mean square error RMSE and mean absolute percentage error MAPE values between the experimental and FLUENT results for depth averaged velocity DAV are 4 5 and 9%, respectively, which is an acceptable error percentage By the expansion of the major and minor secondary flows, it can be seen that in sections located 40 cm after the bend longitudinal velocity shift and the high velocity zone moves further towards the outer wall and the channel bed in depth The fluent model can be used in practical cases in curved channel
کلیدواژهها
نویسندگان
Azadeh Gholami
Ph D Candidate, Department of Civil Engineering, Razi University, Kermanshah, Iran
Salma Ajeel Fenjan
M Sc Student, Department of Civil Engineering, Razi University, Kermanshah, Iran
Hossein Bonakdari
Associate Prof, Department of Civil Engineering, Razi University, Kermanshah, Iran
علی اکبر اختری
Assist Prof, Department of Civil Engineering, Razi University, Kermanshah, Iran
شیوه ارجاع
Gholami, Azadeh and Ajeel Fenjan, Salma and Bonakdari, Hossein and Akhtari, Ali Akbar,1394,Experimental and numerical investigation of flow pattern in a strongly curved 60º open channels bend,10th International River Engineering Conference,Ahvaz
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