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Pirkhalili, A., Rostami Varnousfaaderani, M., Dehghan Manshadi, M. (2023). Numerical Simulation of Floating of Objects with by pressure field correction of SPH Method. Electronic and Cyber Defense, 11(2), 23-36.
Ali Asghar Pirkhalili; Mahmoud Rostami Varnousfaaderani; Mojtaba Dehghan Manshadi. "Numerical Simulation of Floating of Objects with by pressure field correction of SPH Method". Electronic and Cyber Defense, 11, 2, 2023, 23-36.
Pirkhalili, A., Rostami Varnousfaaderani, M., Dehghan Manshadi, M. (2023). 'Numerical Simulation of Floating of Objects with by pressure field correction of SPH Method', Electronic and Cyber Defense, 11(2), pp. 23-36.
Pirkhalili, A., Rostami Varnousfaaderani, M., Dehghan Manshadi, M. Numerical Simulation of Floating of Objects with by pressure field correction of SPH Method. Electronic and Cyber Defense, 2023; 11(2): 23-36.

Numerical Simulation of Floating of Objects with by pressure field correction of SPH Method

مکانیک سیالات و آیرودینامیک
Article 3, Volume 11, Issue 2 - Serial Number 30, March 2023, Pages 23-36    PDF (1.09 M)
Document Type: Original Article
Authors
Ali Asghar Pirkhalili1; Mahmoud Rostami Varnousfaaderani* 2; Mojtaba Dehghan Manshadi3
1Master's degree, Malik Ashtar University of Technology, Tehran, Iran
2Assistant Professor, Malik Ashtar University of Technology, Tehran, Iran
3Professor, Malik Ashtar University of Technology, Shahin Shahr, Iran
Receive Date: 26 July 2022,  Revise Date: 29 November 2022,  Accept Date: 09 February 2023 
Abstract
In this paper, the Smoothed Particle Hydrodynamics (SPH) method with dynamic boundary condition has been used to simulate 2D floating of objects. Severe fluctuations in the field of pressure and velocity is one of the major problems in this method. In this paper, the fluctuations have been corrected using Delta and Shift algorithms. The simulation was numerically performed with three viscosity models including real fluid viscosity (laminar and turbulence), ideal fluid (without viscosity) and artificial viscosity. Validation of this method indicated that in the case of artificial viscosity and also ideal fluid, the Delta algorithm should be used and in the case of real fluid viscosity, using Delta and Shift algorithms could establish good agreement with experimental data. Finally, by simulating the floating experiment with the obtained optimal numerical models, the results showed that the optimal method in the case of real fluid viscosity had a better performance in modeling the horizontal, vertical and rotational movements of the floating body than other optimal methods.
Keywords
SPH; viscosity models; pressure and velocity correction algorithms; floating objects
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