Effect of Thermorheological Properties on Shear Flow of Grease in Pipes

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Yanhai Cheng¹  Jiabao Pan¹  Jinyong Yang¹ 

[1] School of Mechanical and Electrical Engineering, China University of Mining and Technology

关键词: Lubricating Grease;    Thermorheological Properties;    Shear Flow;    Pipe;    Theoretical Models;   

DOI  :  10.1252/jcej.15we235

来源: Maruzen Company Ltd

【 摘 要 】

References(29)Owing to the shear flow of grease in pipes which is highly related to temperature and its rheological properties, the effect of thermorheological properties on shear flow of NLGI 3 lithium grease in pipes was investigated through theoretical and experimental methods. And the theoretical models for shear flow of grease in pipes, which contain flow velocity, shear rate and shear stress, were obtained by using the Herschel–Bulkley (H–B) rheology model. The H-B parameters on the flow curves were obtained by a rheometer. With the theoretical model and H–B parameters as foundation, the shear flow of grease in pipes was studied. Moreover, the variation mechanisms of shear flow were analyzed based on the results of field emission scanning electron microscopy (FESEM) and viscoelastic properties of grease. At last, grease delivering tests were carried out to verify those theoretical models. It was confirmed that the experimental data at different temperatures were remarkably consistent with the theoretical results.

【 授权许可】

Unknown