Abstract

ABSTRACTThe effect of temperature on grease flow properties in pipes was investigated using both theoretical and experimental methods. A theoretical model for pipe flow was obtained by using the Herschel-Bulkley (H-B) rheology model. The H-B parameters at different temperatures were obtained from flow curves measured on a rheometer. The flow properties in the pipes were studied and combined with the theoretical model and H-B parameters. In addition, pressure drop experiments were carried out to verify the theoretical model. The model can be used to predict the critical temperature at which a lubrication system would no longer be able to deliver a sufficient grease flow rate.

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