Showing result: 1 - 10 of 17
Biomedical Engineering
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Blood Vessel
This model refers to a portion of the vascular system of a young child - the upper part of the aorta artery. The blood vessels are embedded in a biological tissue (the cardiac muscle) and, during the flow of blood, pressure is applied to the internal surfaces producing deformation of the vessel wall...
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Absorbed Radiation (SAR value) in a Human Head
The increasing use of wireless equipment has also increased the amount of radiation energy to which human bodies are exposed. A common property that measures absorbed energy is the SAR value, (specific absorption rate) to determine the amount of radiation that human tissue absorbs.
The human head...
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FSI in a Peristaltic Pump
In a peristaltic pump, rotating rollers squeeze a flexible tube. As the rollers move along the tube, the fluid in the tube follows the motion. The main advantage of the peristaltic pump is that no seals, valves or other internal parts ever touch the fluid. Due to their cleanliness, peristaltic pumps...
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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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Nonisothermal Flow in a MEMS Heat Exchanger
This example concerns a stainless-steel MEMS heat exchanger, which you can find in lab-on-a-chip devices in biotechnology. Fluid flows through the tubes while a stainless steel heat sink/source surrounds the tubes.
The heat exchanger is modeled in 3D and accounts for heat transfer through both co...
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Hepatic Tumor Ablation
Heating cancerous tumor tissue to a critical temperature can kill such cells. Doing so requires a local heat source, which physicians create by inserting a small electric probe. This example accomplishes the localized heating by inserting a four-armed electric probe through which an electric current...
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Plastic Deformation during the Expansion of a Stent
Percutaneous transluminal angioplasty with stenting is a widely used method for the treatment of atherosclerosis. During this procedure a stent is deployed into the blood vessel by means of a balloon. The expanded stent acts as a scaffold that keeps the blood vessel open.
Stent design is of signi...
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Structural Integrity of a Hip Replacement
The most common reason that people have hip-replacement surgery is due to the wearing down of the hip joint that results from osteoarthritis. Other conditions, such as rheumatoid arthritis (a chronic inflammatory disease that causes joint pain, stiffness, and swelling), avascular necrosis (loss of b...
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A Transient Analysis of Freeze-drying
Freeze-drying, or lyophilization, is a process for drying heat-sensitive substances such as foods, blood plasma, and antibiotics. The wet substance is frozen and then through sublimation ice or some other frozen solvent is removed in the presence of a high vacuum.
This example models the process...
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