Locomotion of the fish-like foil under own effort

Self-locomotion of the fish-like foil is simulated by the mesh-free method of viscous vortex domains (VVD). The foil consists of three rigid sections connected by the spring hinges. The forcing periodic moment is applied between first and second sections imitating the muscular effort of the fish. The hinge between the second and third sections is elastic and passive. The task is solved as coupled flow-structure interaction

Simulation of butterfly flapping with the method of dipole domains

A numerical mesh-free method of dipole domains [1,2] is used for simulation of a butterfly flapping model. This method is based on the representation of a vortex field by the set of dipole particles. The vector function D describes density of dipole moments in accordanse with Navier-Stokes or Euler equations [3]. The butterfly model consists of two flat plates with a common edge performing harmonic oscillations in two planes. New mechanism of the thrust performing is proposed

Using the dipole particles for simulation of 3d vortex flow of a viscous incompressible fluid

A fully lagrangian numerical method for simulation of 3D nonstationary flow of viscous and ideal incompressible fluid is developed in this work. This method is based on the representation of a vortex field as a set of dipole particles [1]. The introduced vector-function D describes density of dipole momentum. The equation for this function is in accordance with Navier-Stokes equations [2]. The vorticity is equal to curl of dipole momentum density. Thus vortex field is always solenoidal. The dipole particles are generated at a body surface and are moving interacting. The region where function D is essentially non-zero approximately coincides with the vortex region. Each dipole particle induces the velocity field which is equal to field of a point dipole at large distance from the particle. But near a particle the induced velocity field is another taking into account the particle volume and viscosity of the liquid. The method can be applied for simulation of an ideal and viscous flows

Simulation of butterfly flapping with the method of dipole domains

A numerical mesh-free method of dipole domains [1,2] is used for simulation of a butterfly flapping model. This method is based on the representation of a vortex field by the set of dipole particles. The vector function D describes density of dipole moments in accordanse with Navier-Stokes or Euler equations [3]. The butterfly model consists of two flat plates with a common edge performing harmonic oscillations in two planes. New mechanism of the thrust performing is proposed