Numerical comparative study between flow field characteristics of a double-inlet and single-inlet self-excited jet
عنوان مقاله: Numerical comparative study between flow field characteristics of a double-inlet and single-inlet self-excited jet
شناسه ملی مقاله: ISME28_365
منتشر شده در بیست و هشتمین کنفرانس سالانه بین المللی انجمن مهندسان مکانیک ایران در سال 1399
شناسه ملی مقاله: ISME28_365
منتشر شده در بیست و هشتمین کنفرانس سالانه بین المللی انجمن مهندسان مکانیک ایران در سال 1399
مشخصات نویسندگان مقاله:
Mahtab Aminzadeh - PhD Candidate, University of Birjand, Birjand;
Javad Khadem - Associate Professor, University of Birjand, Birjand;
Seyed Alireza Zolfaghari - Associate Professor, University of Birjand, Birjand;
Amir Omidvar - Associate Professor, Shiraz University of Technology, Shiraz;
خلاصه مقاله:
Mahtab Aminzadeh - PhD Candidate, University of Birjand, Birjand;
Javad Khadem - Associate Professor, University of Birjand, Birjand;
Seyed Alireza Zolfaghari - Associate Professor, University of Birjand, Birjand;
Amir Omidvar - Associate Professor, Shiraz University of Technology, Shiraz;
Oscillatory flow can be observed in the presence of one and also two self-excited jets issuing into a cavity. Until now no investigation has been done on a double-inlet self-excited jet. In the present work, the characteristics of the oscillatory flow caused by a double-inlet jet in a rectangular cavity are studied and compared with those of a single-inlet jet. The numerical simulation was carried out by OpenFOAM code by using Reynolds averaged Navier-Stokes equations and shear stress transport turbulence model. Results indicate that employing the double-inlet self-excited jet is able to increase the oscillation frequency and decrease the value of oscillation amplitude in comparison with a single-inlet one. Indeed, the interactions between two flow jets in the double-inlet self-excited jet prevent from fully flapping motion. Also, the results showed that in the case of double-inlet jet the velocity magnitude are generally lower than the single-inlet self-excited jet at the same flow rate enters the cavity. The flow field of the single-inlet self-excited jet is symmetric around the central axis of cavity while asymmetry in flow behavior is more evident in the double-inlet case.
کلمات کلیدی: Self-excited jet, Oscillatory flow, OpenFOAM.
صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1029377/