Third-dimensional fluid simulation method referring to heat conduction and dynamic viscosity

Abstract

The invention discloses a third-dimensional fluid simulation method referring to heat conduction and dynamic viscosity. The method comprises the steps that 1, discrete modeling is carried out on the heat conduction process in fluid and the heat conduction process between the fluid and the outside based on a smoothed particle hydrodynamics (SPH) model, and the phase change process is simulated according to the influence of enthalpy of phase change on the phase change temperature; 2, calculation of the dynamic viscosity is introduced to show details in the fluid motion process; 3, a PCISPH algorithm is called to complete the remaining fluid motion simulating process; 4, a GPU accelerating algorithm is utilized for processing the processes of heat conduction, phase change, fluid viscosity changes and the like in parallel on a compute unified device architecture (CUDA), and fast simulation of third-dimensional phase change fluid is achieved. By means of the method, the heat conduction process between different kinds of fluid and the outside and the viscosity change process of the fluid can be simulated really and efficiently, simulation details in an existing method are enhanced, and the sense of reality of fluid simulation is improved.

Description

technical field [0001] The invention belongs to the field of computer graphics, and specifically relates to a realistic fluid simulation method involving heat conduction and dynamic viscosity. Part of the technology includes an SPH fluid simulation method, heat conduction and phase transition principles, and GPU parallel acceleration. Background technique [0002] Fluid motion is a common physical phenomenon in nature, and its simulation technology has always been an important research direction in the field of computer graphics, and has broad application prospects in film and television production, game development, virtual reality and other fields. The physics-based fluid simulation is mainly carried out by solving the classic Navier-Stokes (N-S) equation in fluid mechanics. The two popular methods are the Lagrangian method and the Euler method. Among them, the Lagrangian method uses particle systems to simulate fluids. The concept is easy to understand, and it is outstand...

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Problems solved by technology

[0004] However, with the further demand for realism, only examining the velocity and displacement of the fluid can no longer satisfy the public's visual experience

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