CFD Simulations of Film Cooling Effectiveness and Heat Transfer for Annular Film Hole

Abdala, Antar M. M.; Elwekeel, Fifi N. M.

doi:10.1007/s13369-016-2028-3

Cited by 3 publications

(1 citation statement)

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“…It is using the concept of film cooling. Film cooling is a proven cooling method wherein coolant forms a thin envelope over the surface of the implant and a jet of cool air with certain parameters are injected from the lower to upper surface through a hole [27,28]. The effectiveness of cooling [29, 30,31], an essential parameter for such a delicate product, depends on various parameters such as:…”

Section: Introductionmentioning

confidence: 99%

Sustainability in bio-metallic orthopedic implants

2019

Biointerface Res Appl Chem

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An orthopedic implant is surgically introduced into the body as a replacement of a missing or affected biological structure. As these are stationed inside the body hence the material chosen should be bio-acceptable so that it does not cause rejection or gangrene. In this work, Ti-6Al-4V has been chosen for the implant. In actual practice the implant, after design approval is cast and machined to the required dimension and surface smoothness followed by heat treatment to remove stresses induced while machining. The product needs to be cooled before surgical fitment. The present work proposes film cooling technique for the same. The primary deciding factor for the effectiveness and longevity of the orthopedic implants primarily concentrates on the cooling effectiveness. The simulation study has been done using Fluid Flow Simulator Analysis software i.e. FLUENT and results were found to be in good agreement with the experimental results available in the relevant literature. The present work was aimed at a critical situation where an orthopedic implant of titanium alloy (Ti-6Al-4V) is to be manufactured ensuring that it not only resists loosening or migration but also is thermally stable and does not damage surrounding tissues or organs. The results indicate that although forward injection of coolant is a more economically viable but backward injection of coolant should be preferred while working with an orthopedic implant as it provides more area under cooling. Hence it can be inferred that with a backward injected cooling system the implant would be cooled better and would surely ensure a better component with respect to strength and longevity.

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