Direct forcing/fictitious domain-Level set method for two-phase flow-structure interaction

- Journal title : Journal of Ocean Engineering and Technology
- Volume 25, Issue 4, 2011, pp.36-41
- Publisher : Korean Society of Ocean Engineers
- DOI : 10.5574/KSOE.2011.25.4.036

Title & Authors

Direct forcing/fictitious domain-Level set method for two-phase flow-structure interaction

Jeon, Chung-Ho; Yoon, Hyun-Sik; Jung, Jae-Hwan;

Jeon, Chung-Ho; Yoon, Hyun-Sik; Jung, Jae-Hwan;

Abstract

In the present paper, a direct forcing/fictitious domain (DF/FD) level set method is proposed to simulate the FSI (fluid-solid interaction) in two-phase flow. The main idea is to combine the direct-forcing/fictitious domain (DF/FD) method with the level set method in the Cartesian coordinates. The DF/FD method is a non-Lagrange-multiplier version of a distributed Lagrange multiplier/fictitious domain (DLM/FD) method. This method does not sacrifice the accuracy and robustness by employing a discrete (Dirac delta) function to transfer quantities between the Eulerian nodes and Lagrangian points explicitly as the immersed boundary method. The advantages of this approach are the simple concept, easy implementation, and utilization of the original governing equation without modification. Simulations of various water-entry problems have been conducted to validate the capability and accuracy of the present method in solving the FSI in two-phase flow. Consequently, the present results are found to be in good agreement with those of previous studies.

Keywords

Immersed Boundary Method;Direct Forcing/Fictitious Domain (DF/FD);Level-Set Method;Free Surface;Two-phase Flow;Fluid Structure Interaction;

Language

Korean

Cited by

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