Simulation of Gravity Wave Propagation in Free Surface Flows by an Incompressible SPH Algorithm
محل انتشار: ماهنامه بین المللی مهندسی، دوره: 25، شماره: 3
سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 978
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شناسه ملی سند علمی:
JR_IJE-25-3_006
تاریخ نمایه سازی: 17 خرداد 1393
چکیده مقاله:
This paper presents an incompressible smoothed particle hydrodynamics (SPH) model to simulate wave propagation in a free surface flow. The Navier-Stokes equations are solved in a Lagrangianframework using a three-step fractional method. In the first step, a temporary velocity field is providedaccording to the relevant body forces. This velocity field is renewed in the second step to include the viscosity effects. A Poisson equation is employed in the third step as an alternative for the equation of state in order to evaluate pressure. This Poisson equation considers a trade-off between density andpressure which is utilized in the third step to impose the incompressibility effect. The computations are compared with the experimental as well as numerical data and a good agreement is observed. In order to validate proposed algorithm, a dam-break problem is solved as a benchmark solution and the computational results are compared with the previous numerical ones
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نویسندگان
n Amanifard
Mechanical Engineering Department, University of Guilan, P.O. Box ۳۷۵۶, Rasht, Iran
s.m mahnama
Islamic Azad University, Ramsar Branch, P.O. Box ۴۶۵, Ramsar, Iran
s.a.l neshaei
Civil Engineering Department, University of Guilan, P.O. Box ۳۷۵۶, Rasht, Iran
m.a mehrdad
Civil Engineering Department, University of Guilan, P.O. Box ۳۷۵۶, Rasht, Iran