Misalignment between the shaft and the bearing of a journal bearing set may be inevitable and can negatively impact journal bearing performance metrics in many industrial applications. This work proposes a convex profile design of the journal surface to help counteract the negative effects caused by such a misalignment. A transient mass-conserving hydrodynamic Reynolds equation …
Element 27 in our International Year of the Periodic Table series is cobalt, found in pigments, jet engines, and used in the sterilisation of medical equipment. If you’re ever dabbled in painting or pottery-making, you may have come across the shade cobalt blue. It’s, as the name suggests, a blue pigment which is both used …
There are 118 elements in the periodic table – but they’re not all made in the same way. This graphic looks at some of the processes which generate elements in stars, and how the elements they can’t make are made by humans. View the full graphic on the C&EN site. https://www.compoundchem.com/2019/05/07/element-origins/
There are 118 elements in the periodic table – but they’re not all made in the same way. This graphic looks at some of the processes which generate elements in stars, and how the elements they can’t make are made by humans. View the full graphic on the C&EN site. https://www.compoundchem.com/2019/05/07/element-origins/
Here’s the monthly summary of chemistry stories that have hit the news. This month features news on the observation of the universe’s first molecule in space, a new method for making graphene using hair removal wax, and more! Larger summary images for each item are provided below, along with links to articles and studies for …
Element 26 in our International Year of the Periodic Table series is iron – found in our blood, on the Red Planet, and also responsible for our own planet’s magnetic field. Blood’s red colour comes from the iron-containing haemoglobin. It’s not just the colour of blood that haemoglobin contributes; it’s also responsible for ferrying oxygen …
Element 26 in our International Year of the Periodic Table series is iron – found in our blood, on the Red Planet, and also responsible for our own planet’s magnetic field. Blood’s red colour comes from the iron-containing haemoglobin. It’s not just the colour of blood that haemoglobin contributes; it’s also responsible for ferrying oxygen …
Part II presents a novel approach for predicting dynamic coefficients for a tilting pad journal bearing (TPJB) using computational fluid dynamics (CFD) and finite element method (FEM), including fully coupled elastic deflection, heat transfer, and fluid dynamics. Part I presented a similarly novel, high fidelity approach for TPJB static response prediction which is a prerequisite …
This paper presents the first simulation model of a tilting pad journal bearing (TPJB) using three-dimensional (3D) computational fluid dynamics (CFD), including multiphase flow, thermal-fluid, transitional turbulence, and thermal deformation of the shaft and pads employing two-way fluid–structure interaction (FSI). Part I presents a modeling method for the static performance. The model includes flow between …
Element 25 in our International Year of the Periodic Table elements series is manganese, found in railways, our bones and enzymes, and drinks cans. Manganese is added to steel to strengthen it. This steel is then used for railway lines, safes, and prison bars. There’s more interesting science on the reason leaves on railway lines …
