Unit
Laboratory for Applied Mechanical Design
LaboratoryRelated publications (386)
Robust Design of Herringbone Grooved Journal Bearings using Multi-Objective Optimization with Artificial Neural Networks
Jürg Alexander Schiffmann, Soheyl Massoudi
Herringbone grooved journal bearings (HGJBs) are widely used in micro-turbocompressor applications due to their high load-carrying capacity, low friction, and oil-free solution. However, the performance of these bearings is sensitive to manufacturing devia ...
2023Robust Design of Herringbone Grooved Journal Bearings using Multi-Objective Optimization with Artificial Neural Networks
Jürg Alexander Schiffmann, Soheyl Massoudi
Herringbone grooved journal bearings (HGJBs) are widely used in micro-turbocompressor applications due to their high load-carrying capacity, low friction, and oil-free solution. However, the performance of these bearings is sensitive to manufacturing devia ...
2023Design, computational and experimental investigation of a small-scale turbopump for organic Rankine cycle systems
Jürg Alexander Schiffmann, Sajjad Zakeralhoseini
The hydraulic design, computational analysis, and experimental investigations of a high-speed small-scale turbopump for mobile waste heat recovery applications based on organic Rankine cycle systems are presented in this paper. Such applications demand hig ...
2023Techno-economic and environmental analysis of high temperature heat pumps integration into industrial processes: the ammonia plant and pulp mill cases
François Maréchal, Daniel Alexander Florez Orrego, Meire Ellen Gorete Ribeiro Domingos
Heat pumps will play an important role in improving the performance of the industrial processes aiming to decarbonize their heating requirements. Yet, defining the best operating conditions of those devices may be a challenging task, as they are embedded i ...
2023The influence of splitter blades and meridional profiles on the performance of small-scale turbopumps for ORC applications; analysis, neural network modeling and optimization
Jürg Alexander Schiffmann, Sajjad Zakeralhoseini
This work presents the influence of splitters on the performance of small-scale turbopumps for organic Rankine cycle applications numerically. Different design parameters, such as impeller diameter at the outlet, number of blades, blade angle at the traili ...
2023Time scales of dynamic stall development on a vertical-axis wind turbine blade
Karen Ann J Mulleners, Sébastien Le Fouest, Daniel Marie Fernex
Vertical-axis wind turbines are excellent candidates to diversify wind energy technology, but their aerodynamic complexity limits industrial deployment. To improve the efficiency and lifespan of vertical-axis wind turbines, we desire data-driven models and ...
2023Parametric Reduced Order Model of a Gas Bearings Supported Rotor
Fabio Nobile, Jürg Alexander Schiffmann, Dimitri Maurice Goutaudier
Gas bearings use pressurized gas as a lubricant to support and guide rotating machinery. These bearings have a number of advantages over traditional lubricated bearings, including higher efficiency in a variety of applications and reduced maintenance requi ...
2023Optimal blade pitch control for enhanced vertical-axis wind turbine performance
Karen Ann J Mulleners, Sébastien Le Fouest
Vertical-axis wind turbines are great candidates to enable wind power extraction in urban and off-shore applications. Currently, concerns around turbine efficiency and structural integrity limit their industrial deployment. Flow control can mitigate these ...
2023Formation of the cavity on a planar interface subjected to a perturbed shock wave
Naifu Peng, Ho Ling Li, Yue Yang
We report the mechanism and modeling for the formation of cavitylike structures on a planar interface subjected to a perturbed shock wave. The cavity is distinguished from bubbles and spikes formed in the standard Richtmyer-Meshkov instability (RMI). The t ...
AMER PHYSICAL SOC2023A parametric study on pool boiling heat transfer and critical heat flux on structured surfaces with artificial cavities
Luis Guillermo Villanueva Torrijo, Ahmad Reza Motezakker
Emerging applications in new generation electronic devices require effective heat removal and thermal man-agement. In this regard, boiling is a phase change phenomenon capable of dissipating a large amount of heat compared to the sensible heat. In this stu ...
PERGAMON-ELSEVIER SCIENCE LTD2022