Transition Flow through Microchannel
Application ID: 149961
This model simulates transition flow through a microchannel using the Transition Flow interface in COMSOL Multiphysics®, which solves the Boltzmann BGK equation. The analysis is carried out to understand the fluid flow behavior across five different pore-length (porosity) configurations, examining velocity contours and Knudsen-number distributions in each case.
The COMSOL simulation results are validated against Direct Simulation Monte Carlo (DSMC) data from Wu, X., Guo, Y., Pan, X. and Yang, Z., 2024. The direct Monte Carlo simulation of microchannel flows for a large Knudsen number range. Physics of Fluids, 36(2).
The model results show good agreement with the DSMC data from Wu, Xiaosheng, et al., validating the accuracy of the Transition Flow interface for rarefied gas flow in microchannels.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.
