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fdtd:computational_domain [2015/07/18 13:36] pklapetek created |
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+ | ===== Computational domain ===== | ||
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To calculate electromagnetic field propagation we want to solve Maxwell's equations that link electric and magnetic field components and its time and space evolution. The basic idea being FDTD technique is a succesive update of electric and magnetic field components that are specially placed in the computational volume as shown on the following image: | To calculate electromagnetic field propagation we want to solve Maxwell's equations that link electric and magnetic field components and its time and space evolution. The basic idea being FDTD technique is a succesive update of electric and magnetic field components that are specially placed in the computational volume as shown on the following image: | ||
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Every computation step has two parts: | Every computation step has two parts: | ||
- | * Magnetic field components are updated from electric field components from the previous step. | + | * Magnetic field components are updated from electric field components from the previous step. |
- | * Electric field components are updated from magnetic field components. | + | * Electric field components are updated from magnetic field components. |
For update of any component we need only surrounding field values which makes the method suitable for parallelization. | For update of any component we need only surrounding field values which makes the method suitable for parallelization. |