In an estuary, a tidal bore may be generated at the leading edge of the flood tidal wave during the early flood tide under spring tide conditions into a narrow funnelled channel. For Froude numbers greater than 1.4–1.6, the leading edge of the bore is characterised by a breaking roller. The roller is characterised by a sudden increase in water depth, a highly turbulent flow with large-scale vor...

In an open channel, a hydraulic jump is a sudden transition from a high-velocity to slower, fluvial flow motion. The impinging flow forms a turbulent roller with a highly fluctuating free-surface, while a large amount of air bubbles is entrapped at the jump toe. The present work presents some physical investigations of hydraulic jumps based upon a wide range of inflow Froude numbers (3.8 < Fr1 ...

Knowledge of the position and the material conditions, e.g. the temperature, of the plates during hot rolling is important for process control. In fact, a precise material tracking system may help to prevent problems during the production process. This paper deals with the tracking of the rotation of heavy plates before and after the lateral expansion phase. The presented approach estimates the...

This study aims to determine the causes of failure in coupling gear, reduce or minimize damage that occurs hardness gear material, and level wear tear on gear. research was conducted from July October 2022, at PT. Semen Padang, ITP Mechanical Engineering Laboratory, FT-Unand Metallurgical Laboratory. The test procedures used this are first identify damage, testing After observing, types obtaine...

Abstract A lattice Fokker-Planck method is introduced based upon a variational formulation of the time evolution as a Wasserstein gradient flow within the space of probability densities of the system. Gradient descent directions are efficiently generated by exploiting the link to Langevin dynamics and the parallel-execution capabilities of graphics processing units. This approach can capture al...

Subject of the investigation is a bimetallic mill roller with external, working layer from high chromium material and inner, supporting ductile cast iron. The processes, accompanying formation transition in castings, produced by centrifugal casting have been investigated. Attention has paid to structural changes zone, caused diffusion processes occurring during crystallization.