Numerical investigation of cavitation phenomenon in Aghchai dam spillway by VOF method and Flow-3D software
Article Type:
Research/Original Article (دارای رتبه معتبر)

With the help of mathematical models, complex hydraulic conditions and especially the presence of two-phase flows over spillway chutes can be simulated in three dimensions with acceptable accuracy. By establishing different flow flows, the possibility of vacuum generation in this structure can be examined. In the present study, the possibility of cavitation and cure on the service spillway of Aghchai dam using numerical methods in Flow-3D software is evaluated. The flood flow regime has 4400 and 1065 cubic meters per second rate, which is provided by the project consultant. The free flow level in this model is calculated by volume of fluid (VOF) method. The results of flow simulation at a flow rate of 4400 cubic meters per second show that cavitation is very likely to occur at the ogee and the angle change of the chute channel where should be prevented by taking some actions. However, in lower flows, such as 1065 cubic meters per second, due to lower speed and lack of separation of flow from the bed, the occurrence probability of vacuum generation is low and not very significant. The results obtained are in good agreement with the results of the project consultant.

Journal of Mechanical Engineering, Volume:52 Issue: 4, 2023
135 to 144  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 990,000ريال می‌توانید 60 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe for 50 € euros via PayPal and download 60 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!