This paper describes the viscosity variation of a liquid crystal under electric field, and its application to a controllable sliding bearing. Liquid crystal is known as a homogeneous organic liquid characterized by the long-range order of its molecular orientation. When an electric field is applied to a liquid crystal film as lubricant, the orientational order of molecules become parallel to th...

The use of tilting pad journal bearings (TPJBs) has increased in the recent past due to their stabilizing effects on rotor bearing system. Most studies about steady state and dynamic behaviors TPJBs are usually evaluated by means thermohydrodynamic models assuming nominal dimensions for bearing. However, machining errors could lead actual geometry different from ones. In particular, TPJB asymme...

Synchronous Thermal Instability Evaluation of Medium Speed Turbocharger Rotor-Bearing Systems Brian R. Carroll Rotors in fluid-film bearing supported turbomachinery are known to develop elliptical orbits as a result of rotor-bearing interactions, mass unbalance within the rotor, gravitational bending of the shaft and external excitation. In synchronous whirl, where the speed at which the shaft ...

Background/introduction Peripheral arterial disease (PAD) affects 12 million people in the United States. Unfortunately, current treatments are highly invasive and have limited efficacy. Ultrasound (US) in conjunction with microbubbles (MB) has recently been explored as a non-invasive strategy for the delivery of intravascularly circulating therapeutic agents. US mediated MB oscillation can lea...

In the hydrodynamic inclined fixed pad thrust bearing, when surface separation is ultra low, there will be special mode where in inlet zone occur both adsorbed boundary layer flows and intermediate continuum fluid flow i.e. multiscale outlet only occurs physical flow. This new of bearing has not been addressed before. Here, we present corresponding analysis for this bearing. The described by cl...