INITE ELEMENT STUDY OF EFFECT OF DISTANCE BETWEEN PLANES ON CONTACT HEAT TRANSFER
Keywords:
Real area of contact, Contact Heat Transfer , Distance between planesAbstract
Engineering surfaces can be characterized as more or less, randomly rough. The two solid surfaces apparently in contact touch each other only at a few individual spots and because of this the real area of contact is far less than nominal area of contact. The real area of contact depends on surface roughness, applied load, surface hardness and material properties like Young’s modulus. Many theories and empirical relations based on experimental results are available in the literature for the computation of contact heat transfer. Computation of real area of contact and heat transfer is very important in the applications like cooling of electronic chip, wear studies etc. The distance between two contacting surfaces changes the contact area and this in turn affects the contact heat transfer. In the present work finite element study of effect of distance between planes on contact heat transfer is carried out.
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