توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱A Comparison between Finite Element and Smoothed Particle Hydrodynamics’ Simulations of Dam Break
اطلاعات انتشار: نهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۸
Modeling of free surface flows is one of the main challenges in computational fluid dynamics (CFD). Dam break, as a free surface flow producer, is very important in industrial and environmental works and is usually applied to evaluate the performance of numerical modeling methods. In a dam break, because of a sudden break of a holding barrier, a large amount of water is accidentally released downstream. In this study, two numerical models for solving the dam break problem are developed and the efficiency of them is compared together. In the first model, Navier–Stokes equations for incompressible fluid are solved using a Characteristic–Based Split (CBS) finite element method on an unstructured triangular grid. The second numerical model solves the aforementioned equations with a meshless method entitled as Smoothed Particle Hydrodynamics (SPH) method. The results show that the developed SPH model provides better efficiency and accuracy than the CBS finite element method<\div>

۲2D Simulation of a Free–Floating Body Motions under Linear Waves Using a Smoothed Particle Hydrodynamics scheme
اطلاعات انتشار: دهمین کنگره بین المللی مهندسی عمران، سال
تعداد صفحات: ۷
In this study, a modified weakly compressible smoothed particle hydrodynamics (WCSPH) scheme is used for simulating the rigid motions of a freely floating body with 3 degrees of freedom (heave, sway, and roll). In the modified WCSPH scheme, a new equation for simulation of wave–structure interaction and calculating hydrodynamic forces is used. To evaluate the efficiency of the new proposed scheme, a numerical wave flume with a flap–type wave maker has been simulated and the results are compared with the experimental data. The results obtained from the new SPH scheme reveal that the proposed scheme is more accurate and reliable than the classic SPH scheme in estimation of the rigid body motions.<\div>
نمایش نتایج ۱ تا ۲ از میان ۲ نتیجه