A single component and multi -component non -compressed flow simulation method that uses the variable gradient
A multi-component fluid and compressive fluid technology, applied in the field of computer graphics physical simulation, can solve problems such as difficulty in ensuring fluid compressibility, achieve enhanced visual authenticity, high-efficiency visual effects, and avoid complex effects
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[0037] 1. Initialization
[0038] Our method can use the general initialization method of existing standard particle method simulation schemes. For each particle, store its position, velocity, volume fraction of components, and density.
[0039] 2. Predictive calculation in single / multi-component fluid simulation method
[0040] According to the explicit solution method of the standard single-component fluid Navier-Stokes momentum equation (see Equation 2 below) and the multi-component fluid mixed flow model Navier-Stokes equation (see Equation 15 below), according to The parameters stored on all particles at the beginning of the current time step are explicitly calculated to obtain a predicted fluid particle acceleration, and further according to the acceleration, the standard fluid simulation advection algorithm is used to obtain the predicted position of the particle in the next time step , velocity, and calculate the deformation gradient and its Jacobian determinant corr...
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