Study of Optimum Eccentricity Angle of a Horizontal Eccentric Annulus

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M .G. Mousa, Mustafa. A. El-Bouz, Mahmoud A. Elazab "Study of Optimum Eccentricity Angle of a Horizontal Eccentric Annulus", International Journal of Engineering Trends and Technology (IJETT), V47(3),154-160 May 2017. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group

**Abstract**

A numerical study of mixed convection and flow
inside an eccentric horizontal annulus is
presented. The inner and outer cylinders rotate
to generate the forced convection effect. The
numerical work was carried out using ANSYS
FLUENT 16. The numerical study is conducted
for laminar flow mixed convection. Different
eccentricity angle were studied to get the best
position of eccentricity at which the best heat
transfer occurs. The effect of eccentricity angle
on the average Nusselt number at constant
radius ratio of 2 and constant eccentricity of 0.5
is conducted. All results were performed with
constant heat flux=400 W/m2 at the inner
cylinder and constant inlet velocity. isotherms
was investigated.

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**Keywords**

Mixed convection, Eccentricity
angle, Eccentric annulus, Rotating cylinder.