利用低反射边界条件模拟波的传播 模拟大型振动结构中波的传播是一项极具挑战性的任务,工程师必须在减小计算域尺寸与减少表面边界的反射之间做出平衡。利用 COMSOL Multiphysics® 软件的低反射边界条件,我们可以轻松将计算域减小到合理大小,同时保证仿真结果的精确度。今天,我们以岩层中的爆炸波传播建模为例,演示低反射...
In theSolid Mechanicsinterface, you also can find a special type of boundary condition called aLow-Reflecting Boundary. Its purpose is the same as for the PML: to avoid wave reflection. Although it is not as efficient as a PML when the waves strike the boundaries at oblique angles, theLow-...
so all you need to do is integrate that over the low-reflecting boundary terminating the steel domain. Divide that by the incident power, which for a plane wave has a known analytical expression, and you achieve the transmission coefficient. ...
The perfectly matched layer (PML) is a domain or layer (sometimes called sponge layer) that is added to an acoustic model to mimic an open and nonreflecting infinite domain. It sets up a perfectly absorbing domain as an alternative to nonreflecting boundary conditions. The PML works with all...
the number of degrees of freedom on the boundary is doubled to compute the electric field on either surface of the TBC, as shown below. Additionally, the total losses through the thickness of the film are computed. For an example of using this boundary condition, see theBeam Splittertutorial...
模拟大型振动结构中波的传播是一项极具挑战性的任务,工程师必须在减小计算域尺寸与减少表面边界的反射之间做出平衡。利用 COMSOL Multiphysics® 软件的低反射边界条件,我们可以轻松将计算域减小到合理大小,同时保证仿真结果的精确度。今天,我们以岩层中的爆炸波传播建模为例,演示低反射边界条件的具体应用。
We have introduced the Lumped Port and the Port boundary conditions for modeling boundaries at which an electromagnetic wave can pass without reflection and where we know something about the shape of the fields. Alternative options for the modeling of boundaries that are non-reflecting in cases wher...
To efficiently mimic the real world in our antenna simulation, we need to choose the correct boundary conditions and physics features. Accurately reflecting real-world conditions in your simulation environment, while still keeping your model memory and time efficient, can be challenging. In the table...
upon a dielectric medium. Using either the RF Module or the Wave Optics Module, we can build a unit cell describing a small region around the dielectric interface. We solve the full Maxwell’s equations in the unit cell, with periodic boundary conditions and ports to truncate the modeling ...
Measuring the electromagnetic phenomena around an object is common practice that necessitates the creation of a boundary to enclose an air domain around your geometry. In theory, we should include large domains (technically infinite) in our model, but we do not, for obvious reasons. ...