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Sealing, Containment and Emissions
Case Study: Artificial Heart Valve Development

Application
Human organ replacement

Customer
Medical Industry

Product or Service Supplied
Computational modeling using CFD

Problem
Artificial implants have to work reliably in a warm humid environment over a long service lifetime. They must exert enough force to function, but not so as to damage the human tissues. Materials used, including metal, elastomer and plastics have to be compatible with human tissues but resistant to degradation and biological attack. Maintenance of the lubrication film on these implants is vital.

Objectives
To assess reverse leakage flow through a prototype valve conduit.

Approach
CFD techniques were used to assess the reverse leakage flow through the prototype. The computed results were compared with experimental data of a twin-flap valve. A combination of analytical and numerical techniques was used to develop forward flow stability.

Outcome/Benefits
An outlet profile was achieved that provided stable forward flow through an early prototype ball valve conduit.

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