Computer simulations of nematic ordering with random disorder

A Monte Carlo simulation of a nematic Lebwohl-Lasher liquid crystal model w ith a certain percentage of randomly oriented frozen spins is presented. Th e site-site distance dependence of the nematic correlation functions obtain ed are generally well fitted by stretched exponentials, which evolve into s imple exponential at low temperature. The dependence of the correlation len gth on the disorder density is presented and compared to corresponding expe rimental results.