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Fluid Mechanics (CFD)
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Thermal Decomposition of a Chemical through a Parallel Plate Reactor
This model investigates the unimolecular decomposition of a chemical passing through a parallel plate reactor. The heat sensitive compound is present in a water solution.
After entering the reactor, the liquid first experiences expansion, due to a step-change in geometry at the bottom plate. Befo...
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Fluid-Structure Interaction with Two Fluid Phases
The following example demonstrates techniques for modeling a fluid-structure interaction containing two fluid phases in COMSOL Multiphysics. It illustrates how a heavier fluid can induce movement in an obstacle using the arbitrary Lagrangian-Eulerian (ALE) technique along with the Two-Phase Flow, Ph...
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Shell-and-Tube Heat Exchanger
In this model, you will study a part of a shell-and-tube heat exchanger, where hot water enters from above. The cooling medium flows through the tubes that, in this model, impose a constant temperature at the walls. Furthermore, the tubes are assumed to be made of stainless steel and the heat flux i...
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Fluid-Structure Interaction in Aluminum Extrusion
In massive forming processes like rolling or extrusion, metal alloys are deformed in a hot solid state with material flowing under ideally plastic conditions. Such processes can be simulated effectively using computational fluid dynamics, where the material is considered as a fluid with a very high...
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The Action of Boiling Water from Two Adjacent Nozzles
Boiling flow is an example of phase transition initiated by raising the temperature of a liquid above its saturation temperature. It is possible to accomplish this in many ways; in this example by applying an external heat flux to a solid surface in contact with the liquid.
There are three disti...
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Droplet Breakup in a T-junction
Emulsions consist of small liquid droplets immersed in an immiscible liquid and widely occur in the production of food, cosmetics, fine chemicals, and pharmaceutical products. The quality of the product is typically dependent on the size of the droplets. Simulating these processes can help in optimi...
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Forced Convection Cooling of Horizontal Circuit Board
In this suite of models, temperature distribution and fluid flow field is modeled with the General Heat Transfer and the Non-Isothermal Flow application modes. By modeling the fluid flow and heat transfer simultaneously the convective transfer is described very accurately. The results are analysed a...
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Magnetic Drug Targeting
Current research on methods to target chemotherapy drugs in the human body includes the investigation of bio compatible magnetic nano-carrier systems, e.g., magnetic liquids such as ferrofluids. This model example investigates an external magnetic field and its interaction with blood flow containing...
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Polymerization in a Multijet Tubular Reactor
This example considers condensation polymerization in a tubular reactor, where mixing in the reactor is achieved by impinging turbulent jets of reactants onto each other.
Turbulent flows involving rapid reaction kinetics are quite common in the production of polymers, and the complex interplay b...
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Turbulent Two-Phase Flow Benchmark
This model shows how to solve a turbulent two-phase flow problem with the k-? Turbulence Model closure model.
Industrial scale mold-filling problems often involve free-surface flows with a high Reynolds number, and a suitable turbulence model must be employed.ยด
Liquid water is injected into...
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