چکیده مقاله
Study of flow pattern in sharp bends is so important because of the complexity of the flow pattern in this bends in to mild bends In this study, the numerical study of flow pattern in three sharp bends 90°, 120° and 180° have been done Corresponding numerical model is based on the Fluent software with free surface model And the k RNG turbulence model is used to simulate turbulent flow parameters The results show that the overall pattern of velocity distribution for the three bends have been studied are identical In this bends, maximum velocity until around the end of the bend is located in the inner wall and is transmitted to the outer wall in the sections located after the bend Study area tends to flow separation in the inner wall in the ending section of the bend indicates that by increasing the angle of curvature of the bend, bending effect on the tendency to flow separation within the channel width is increase The shear stress distribution pattern at each three bend is identical and similar to the velocity pattern
کلیدواژهها
نویسندگان
salma ajeel
M Sc Student, Department of Civil Engineering, Razi University, Kermanshah, Iran
Azadeh Gholami
Ph D Student, Department of Civil Engineering, Razi University, Kermanshah, Iran
حسین بنکداری
Associate Prof, Department of Civil Engineering, Razi University, Kermanshah, Iran
علی اکبر اختری
assistant Prof, Department of Civil Engineering, Razi University, Kermanshah, Iran Water and Wastewater Research Center, Razi University, Kermanshah, Iran
شیوه ارجاع
ajeel, salma and Gholami, Azadeh and Bonakdari, Hossein and akhtari, Ali Akbar,1394,Comparison and numerical and experimental study of flow patterns in sharp bends,10th International Congress on Civil Engineering,Tabriz
ارائهشده در
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