نویسندگان
دانشگاه صنعتی اصفهان
چکیده
در پژوهش حاضر از یک روش تک سیالی به همراه روش اویلری- لاگرانژی ALE برای شبیه سازی جریان تراکم پذیر انفجار زیر آب استفاده شده است. همچنین از حلگر دقیق ریمان به همراه معادله ی حالت متناسب با رفتار ترمودینامیکی آب در فرآیند انفجار استفاده شده است. حل دوبعدی انفجار زیر آب در نزدیکی یک صفحه به همراه کاویتاسیون مدلسازی شده است. به منظور شبیه سازی دقیق محل موج از یک شبکه ی تطبیقی در دامنه ی حل استفاده شده است. شبیه سازی مسأله ی انفجار زیر آب دارای تطابق بسیار خوبی با کارهای مشابه عددی می باشند که نشان دهنده ی قابلیت روش حاضر در شبیه سازی فیزیک انفجار در زیر آب و مدلسازی تغییرات حجم حباب انفجاری و نیز ایجاد و اضمحلال ناحیه ی کاویتاسیون در انفجار زیر آب می باشد.
کلیدواژه‌ها
عنوان مقاله [English]
Simulation of Underwater Explosion with Cavitation using ALE Method
نویسنده [English]
- A. Jafarian
چکیده [English]
In the present paper thecompressibleflowoftheunderwaterexplosionhasbeensimulatedusing One-fluid
method along with the Eulerian-Lagrangian ALE method. Besides, the exact Riemann solver and an appropriate
equation of state which is consistent with the thermodynamic behavior of water in underwater explosion, is employed.
The two dimensional underwater explosion problem near a flat plate is modeled. In order to increase the accuracy of
the method for simulating the wave front, the adaptive grid is used. The simulated underwater explosion results
agreed well with other similar numerical simulations. The numerical results indicate the capability of the present
study in simulating the physics of underwater explosion and modeling the fluctuations of explosive bubble and also
predicting the creation and collapse of the caviation zone.
کلیدواژه‌ها [English]
- Compressible flow
- Underwater explosion
- Arbitrary-Lagrangian-Eulerian (ALE)
- cavitation
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