@article { author = {Bahrami, A. and barani, golamabbas}, title = {Numerical Investigation of Air Detrainment Process in Chute Flows}, journal = {Journal of Hydraulics}, volume = {4}, number = {3}, pages = {1-17}, year = {2009}, publisher = {Iranian Hydraulic Association}, issn = {2345-4237}, eissn = {2645-8063}, doi = {10.30482/jhyd.2009.85525}, abstract = {One of the most important factors in designing spillways is to consider sufficient discharge capacity.Possible creation of negative pressure over spillway during high flood conditions can be a potential foroccurrence of cavitation damage. Flow aeration might be one of the best ways to prevent thisphenomenon. Realizing the air detrainment process along the chutes is a key problem in designingaerators. Although experiments on hydraulic models have their own advantages, but these methods areexpensive and time consuming. In this study the CFD code FLOW-3D® has been used to determine thespillway flow air concentration in case of aeration by means of deflectors. Comparison of obtainedresults with the Kramer's experimental results shows good agreement. It has been realized that theflow bottom air concentration downstream of deflectors reduces exponentially.}, keywords = {}, title_fa = {بررسی عددی روند تغییرات غلظت هوا در جریان های عبوری از روی تنداب ها}, abstract_fa = {}, keywords_fa = {}, url = {https://jhyd.iha.ir/article_85525.html}, eprint = {https://jhyd.iha.ir/article_85525_70ee7c66e7a092275131f10c0e6be582.pdf} }