D.Chandramohan

Ph.D., Research scholar, Department of Mechanical Engineering,

Anna University of Technology Coimbatore, Coimbatore, India

Email: mail_2_cm@yahoo.com

Mobile No:+91-9994116596

Associate Professor, Department of Mechanical Engineering,

Coimbatore Institute of Technology, Coimbatore, India

Email: kmcit@yahoo.co.uk

Mobile No:+91-9486587225

Abstract—

Keywords-** Thermal stress analysis, CFD, ***Agave sisalana, Hibiscus sabdariffa.*

The basic governing equations for a viscous, heat conducting fluid have been derived for NFRPC material. It is a vector equation obtained by applying Newton's Law of Motion to a fluid element and is also called the

In this research thermal stress analysis using CFD has been carried out on NFRPC plate material and the values compared with manual calculation found to be good in agreement. This invention focuses thermal properties of natural fibers that are used for bone grafting substitutes which are now becoming a great challenge for biomedical engineers. This project emphasis the enhanced property of natural fiber as bone implants. It is a challenge to the creation of better materials for the improvement of life quality. This project proposed suggestions of using Natural fiber reinforced composite as a plate material which uses pure natural fibers that are rich in medicinal properties like Sisal, Banana & Roselle (hybrid) fiber. The most important thing that the researchers have to take into account is that these step taken now, will help the mankind to develop and to have a more pleasant life.

The following assumptions have been invoked while formulating the governing equations for the sake of simplicity:

Ø Buoyancy effects are negligible

Ø Radiation effects are negligible

Ø The flow is adiabatic (there is no heat transfer between the flow and the surroundings).

Length of plate = 0.106 m

Breadth of the plate = 0.01 m

Thickness of the plate = 0.003 m

Thermal conductivity = 0.543 W/m-K

C.O.P of blood = 3594 kJ/kg-K

Diameter of domain =0.16 m

Length of the domain =0.5 m

Inlet velocity =0.5 m/s

Inlet Temperature =305 k

Outlet pressure =0 Pa

Length of bone =0.191 m

Nusselt number

Nu = h D/k

hD /k = 0.023× ( Re)0.8 ×(Pr)1/3

Where,

Nu- Nusselt number

h- Heat transfer coefficient (W/m2-K)

D- Diameter of Domain (m)

K- Thermal conductivity (W/m-k)

Re- Reynolds number

If Re > 2300 (Flow is Turbulent)

Reynolds number

Re = ρVD/μ

= (1060×0.5×0.16)/0.004

= 2.12×104, hence flow is turbulent

Where,

Ρ- Density of blood (kg/m3)

V- velocity of blood (m/s)

μ- Dynamic viscosity (kg/m-s)

Prandtl number

Pr= μCp/k

= 0.004×3594/0.543

Pr = 26.48

Where,

Cp-coefficient of performance (kJ/kg-K)

(h×0.16)/0.543 = 0.023× (2.12× 104) 0.8× (26.48) 1/3

h = 655.27 W/m2-K

CONCLUSION

REFERENCES

[1] Anderson, John D. 1995.

[2] Patankar, Suhas. 1980.

[1]

[2] CFD-Wiki