Volume 18, Issue 6 (10-2018)                   Modares Mechanical Engineering 2018, 18(6): 182-190 | Back to browse issues page

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Moodi S, Mahdizadeh H. Numerical Modeling of Water Influx Falling into an Empty Tank using a Modified Wave Propagation Algorithm. Modares Mechanical Engineering 2018; 18 (6) :182-190
URL: http://mme.modares.ac.ir/article-15-16901-en.html
Numerical Modeling of Water Influx Falling into an Empty Tank using a Modified Wave Propagation Algorithm
Sadegh Moodi1 , Hossein Mahdizadeh * 2
1- M.Sc graduated, Civil Engineering Department, University of Sistan and Baluchestan, Zahedan, Iran
2- Faculty member of Birjand University
Abstract:   (3050 Views)
In this paper a modified Godunov-type wave propagation algorithm is utilised for the modelling of falling water wave over a dry bed. The defined numerical model is well-balanced and is capable to treat the influx/efflux source terms and also the friction term within the flux-differencing of the finite volume neighbouring cells. Additionally, the method employs a rather simple HLLE wave speed for the propagation over dry-state. First the efflux flow from the bed of a reservoir is analyzed. Then, the entrance of falling water wave from the middle and edge sides of the reservoir over a dry bottom is simulated. In order to validate the achieved numerical results for the non-hydrostatic pressure situations a dimensionless number based upon the inflow velocity, the slot length and the falling height is introduced. The obtained results of the defined numerical solver are then compared with the numerical prediction of the STAR-CD which is a commercial Navier-Stokes package. The numerical results demonstrate that the introduced flux-wave solver is able to simulate the falling water waves over the dry-state for a given range of the dimensionless number.
Keywords: Numerical Modeling, Wave Propagation Algorithm, Shallow Water Equations, STAR-CD software
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Article Type: Research Article | Subject: Aerospace Structures
Received: 2018/03/6 | Accepted: 2018/09/24 | Published: 2018/09/24
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