In this simulation, the concentration of NOx is reduced significantly in a car exhaust pipe by selective catalytic reduction (SCR). Urea solution injected into the exhaust pipe converts harmful nitrogen oxides (NOx) into nitrogen and water.
Simulation of SCR uses a coupled multiphysics model involving chemical reactions, heat transfer, multi-phase fluid flow and transport of species. All these physical phenomena are tightly coupled with each other and cannot be modeled in isolation.
This simulation was done in COMSOL — a pioneering FEA software for multiphysics simulations. We are COMSOL certified consultants, i.e. COMSOL certifies our experience and expertise as providers of turnkey modeling & simulation solutions using COMSOL.