An analysis of mutually competing orienting influences on heat-conducting nematic liquid crystals, of temperature gradients, solid boundaries and shear flows is carried out in the case of Couette flow between concentric rotating cylinders by solving the governing equations on the basis of the micropolar continuum theory of Erigen.1–4 Several new features of this investigation distinguishing it from other existing theories include the derivation of explicit analytical expressions for apparent viscosity, adsorption layer, orientation field, microgyration velocity and heat-conduction thus allowing for a direct and more satisfying comparison with experimental results. The behavior of apparent viscosity under various shear-rates and temperatures as well as its dependence on the gap-width between the cylinders is investigated. The theoretical predictions are found to be in good agreement with experimental results.
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Narasimhan et al. (1974) studied this question.
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