The article discusses various types of expanders used in the organic Rankine cycle systems
to turn thermal energy into electrical energy. In addition to basic information on scroll, screw …

Traditional analysis of journal bearings assumed a constant viscosity which simplified the
solutions for static and dynamic characteristics and responses. Today's high-performance …

To reveal the influence of topography evolution caused by abrasive wear of the top foil on
the start-up performance of gas foil bearing (GFB), the transient gas mixed lubrication-wear …

In this paper, the bump-type foil bearing is considered to analyze and optimize its
performance characteristics with various foil materials. For the study, the operating …

Modelling and identification of the dynamic characteristics of foil bearings under varying
loads pose a great challenge and require the use of advanced numerical models. Although …

When the briquetting process of fine-grained material takes place in the roller press unit, the
pressure reached is over a hundred megapascals. This parameter is a result, among other …

Over the past decades, experimental and theoretical studies on gas foil bearings have been
conducted extensively. The essence of the operation of these bearings lies in the use of a …

Maintenance of adequate thermal properties is critical for correct operation of a gas foil
bearing. In this work, the authors present the results of the experimentally conducted thermal …

Investigations to reduce the friction and improve the dynamic performance of a self-acting air
foil journal bearing have been performed and presented herein employing the texture, micro …

Foil bearings are aerodynamic gas bearings that are increasingly used in high-speed oil-
free turbomachines, such as microturbines or turboexpanders. One of the barriers to the …