City Research Online

Abstract

In this work, the motion of a two‐dimensional rectangular freely floating body under waves is simulated using Improved Meshless Local Petrov‐Galerkin method with Rankine Source function (IMLPG_R) with variable spacing resolutions. The IMLPG_R method is a particle method that solves Navier–Stokes equations using the fractional step method to capture the wave properties. However, many existing particle methods are computationally intensive to model the wave‐floating body due to the requirement of fine particles, needing uniform distribution throughout the domain. To improve the computational efficiency and capture the body response properly, variable spaced particle distribution with fine resolution near the floating body and coarse resolution far from the body is implemented. Numerical schemes to handle variable resolutions are reported. An iterative scheme to handle the wave‐floating body is implemented in the particle method. Two test cases, one with small wave and another with steep waves, are simulated for uniform particle distribution and the result shows good agreement with literature. Based on this, the performance of the variable spaced particle distribution is tested in coupling with floating body solver. The application of the method for wave impact load from the green water loading of the floating structure is also simulated.

Publication Type:	Article
Additional Information:	This is the peer reviewed version of the following article: Rijas, A. S., Sriram, V. and Yan, S. (2019). Variable Spaced Particle in Meshfree Method to handle wave‐floating body interactions. International Journal for Numerical Methods in Fluids, which has been published in final form at https://doi.org/10.1002/fld.4751. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Publisher Keywords:	floating bodies, fluid‐structure interaction, marine hydrodynamics, mesh free, MLPG_R, variable spaced particle
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TC Hydraulic engineering. Ocean engineering
Departments:	School of Science & Technology > Engineering
SWORD Depositor:	Symplectic Administrator

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