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تحلیل عددی خود رانش شناور پروازی تونلدار با استفاده از روش دیسک مجازی | ||
| دوفصلنامه مهندسی شناورهای تندرو | ||
| مقاله 6، دوره 17، شماره 52، شهریور 1397، صفحه 56-71 | ||
| نویسندگان | ||
| فاطمه روشن؛ عباس دشتی‌منش* ؛ رسول نیازمند بیلندی | ||
| تاریخ دریافت: 22 فروردین 1397، تاریخ بازنگری: 21 فروردین 1398، تاریخ پذیرش: 12 مرداد 1397 | ||
| چکیده | ||
| در سالهای اخیر گسترش دینامیک سیالات محاسباتی، منجر به تسهیل مطالعه رفتار شناورهای پروازی در سطح آب بوده است. به طوریکه بسیاری از مطالعات به کمک روشهای عددی با صرف زمان و هزینه بسیار کمتر انجام میگیرد. در این مطالعه مدل یک شناور پروازی تحت عنوان شناور C در آب آرام شبیه سازی و اعتبار سنجی شده است. سپس با افزودن دو دیسک مجازی به حل عددی موجود، خود رانش این شناور مورد ارزیابی قرار گرفته و صحت سنجی گردیده است. سپس حل عددی موجود برای شبیه سازی یک شناور پروازی تونلدار گسترش یافته و پس از صحت سنجی نتایج شبیه سازی این فرم بدنه با نتایج آزمایشگاهی موجود، خود رانش شناور پروازی تونلدار نیز در دو موقعیت مختلف دیسک مجازی بررسی شده است. نهایتا، اثر موقعیت طولی قرار گیری پروانه در توزیع فشار، زاویه تریم و همچنین ضریب کاهش تراست برای شناور پروازی تونلدار مورد ارزیابی قرار گرفته است. | ||
| کلیدواژه‌ها | ||
| قایق تندرو؛ شناور پروازی؛ بدنه‌ی تونلدار؛ حل عددی؛ خودرانش | ||
| عنوان مقاله [English] | ||
| Numerical analysis of self-propulsion of planing hull by using virtual Disk Method | ||
| نویسندگان [English] | ||
| Fateme Rushan؛ Abbas Dashti Manesh؛ Rasoul Niazmand | ||
| چکیده [English] | ||
| In recent years, development of computational Fluid Dynamic (CFD) has facilitated the study of hydrodynamic behavior of high speed boat in water surface. Therefore, many studies are done by using numerical method with less time and cost. In this study, a planing hull (C model) have been simulated in calm water and validated against the experimental results. After ensuring the solution accuracy, numerical setups have been used to simulate a tunneled planing hull in calm water. Again, the results of tunneled planing hull in calm water have been validated against the experiment. Then two virtual disks have been added to C hull bottom and self-propulsion results have been validate against the numerical data which is presented by pervious researchers. Then, self- propulsion of tunneled planing hull is presented at two different virtual disc location, by adding similar disc to tunneled hull bottom. So, the effects of propeller longitudinal location on trim angle, trust deduction factor, and dynamic pressure have been presented. | ||
| کلیدواژه‌ها [English] | ||
| high speed craft, planing boat, tunneled hull, numerical, self-propulsion | ||
| مراجع | ||
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