Fluxbegränsade

Fluxbegränsade, also known as flux-limited diffusion, is a numerical method used in computational fluid dynamics and heat transfer to model the diffusion of a scalar quantity, such as temperature or concentration, in a fluid. The method is particularly useful in situations where the diffusion coefficient is large, leading to steep gradients in the scalar field. In such cases, traditional diffusion models can become unstable or inaccurate. Fluxbegränsade addresses this issue by limiting the flux of the scalar quantity to prevent unphysical oscillations and ensure numerical stability. The method involves modifying the standard diffusion term in the governing equations to include a flux limiter, which restricts the maximum flux based on the local gradient of the scalar field. This approach allows for a more accurate and stable simulation of diffusion processes in a wide range of applications, including combustion, multiphase flows, and material processing. Fluxbegränsade has been extensively studied and validated through numerical experiments and comparisons with experimental data, demonstrating its effectiveness in improving the accuracy and stability of diffusion models. The method can be implemented in various numerical schemes, such as finite volume, finite element, and spectral methods, making it a versatile tool for researchers and engineers in the field of computational fluid dynamics and heat transfer.