ISSN Online: 2377-424X
ISBN Print: 0-89116-909-1
International Heat Transfer Conference 9
ANALYSIS AND MODELLING OF STEADY STATE HEAT TRANSFER IN A BOLT AND NUT JOINT
Аннотация
In this work, we have studied the problem of
steady state heat transfer through a helicoldal
joint. Heat flux lines which cross the threaded
interface undergo a double deformation : a large
scale deformation due to the presence of a
helicoldal air gap and a small scale deformation,
due to the imperfect contact along the thteaded
interface. Our preliminar theoretical and
experimental results reveal the effects ,of this
phenomenons on the increase of the thermal global
resistance across a threaded joint. We define an
equivalent model in which the threaded joint is
replaced by a cylindrical surface, along which the,
contact between two parts is imperfect. Hence
there exists an equivalent thermal contact
resistance RCE A uniform distribution of RCE results in a good agreement between the two models as long as the heat flux is concerned. However,
the agreement on the temperature field remains
approximative.