Showing result: 1 - 10 of 13
Biotechnology
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3D Fluid-Structure Interaction Simulation of an Obstacle in a Fluid Channel
In this model, fluid is flowing through a channel containing a flexible obstacle. Due to the viscous and pressure forces asserted by the fluid, the obstacle bends.
With the obstacle undergoing a large deformation, the fluid flow domain also changes considerably. COMSOL Multiphysics takes these c...
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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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Microwave Heating of Cancer Tumor
Electromagnetic heating is ideally suited for modeling in COMSOL Multiphysics. This model shows the area of Hyperthermic Oncology but the modeling issues and techniques are generally applicable to any problem involving electromagnetic heating.
The purpose of this model is to compute the radiation...
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Microchannel H-Cell
This example was originally formulated by Albert Witarsa under Professor Bruce Finlayson’s supervision at the University of Washington in Seattle. It was part of a graduate course in which the assignment consisted of evaluating the potential of patents in the field of microfluidics through math...
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AC Electrokinetically Enhanced Surface Reactions
This model studies the use of AC electrokinetic forces to enhance the rate of transport of electrolytic reactants to a reaction surface on the wall of a microchannel.
If transport was to be governed by flow alone, then the flow velocity perpendicular to the surface would be so small that the ana...
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Electroosmotic Micromixer
Microlaboratories for biochemical applications often require rapid mixing of different fluid streams. At the microscale, flow is usually highly ordered laminar flow, and the lack of turbulence makes diffusion the primary mechanism for mixing.
While diffusional mixing of small molecules (and ther...
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Star-Shaped Microchannel
This model presents a time-dependent study of a microchannel that is used to infuse and flush another piece of equipment with a fluid.
The pressure at the five inlets varies sinusoidally as functions of time, and the velocity vector at the outlet is studied.
The model uses an extruded prism...
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An Electrokinetic Valve in a Microchannel System
This model presents an example of pressure driven flow and electrophoresis in a microchannel system.
The modeled device is often used as an electrokinetic sample injector in biochips with well-defined sample volumes of dissociated acids and salts. The model presents a study of a pinched injection...
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Drug Release from a Biomaterial Matrix
In this example, drug-release from a biomaterial matrix to damaged cell tissue is modelled.
Specifically, a nerve guide delivers a regenerating drug to damaged nerve ends. The model involves detailed drug release kinetics, with rate expressions handling drug dissociation/association reactions as...
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Electrokinetic Flow in a Bio Chip
Miniature laboratories are required to efficiently analyze the information in the human DNA. One of the problems that arise in these lab-on-chip devices is in the transport of the liquid samples and other solutions in the chip, which are of very small dimensions.
One way of transporting the flui...
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