Because practical liquid manifolding and delivery systems create turbulent jets, turbulence is the usual cause of splattering in nonboiling systems. The present work is directed at quantifying the role of nozzle turbulence in producing splatter and at understanding the statistical and spectral evolution of surface roughness on the jets. This work investigates the frictional and thermal characteristics of radial hydrostatic bearings used in precision machine tool applications. The bearings considered are lubricated with water, rather than more viscous oils, leading to lower rotational friction and raising the lubricant heat capacity rate. Numerical and analytical models for bearing power consumption and temperature rise have been developed.
Related work involves temperature control of large tool-base structures.
Albuquerque, NM, January 3-5, 1996. NSF Design and Manufacturing Grantees Conf. , La Jolla, CA, January 4-6, 1995.