Concept
Mach number
Related publications (56)
Formation 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 SOC2023Cavitation bubble dynamics and microjet atomization near tissue-mimicking materials
Mohamed Farhat, Davide Bernardo Preso, Armand Baptiste Sieber
In recent years, considerable interest has been devoted to the interactions between cavitation bubbles and tissue-mimicking materials due to their promising applications in medicine and biomedical sciences. The strong fluid-structure interaction between a ...
AIP Publishing2023Entropic Fokker-Planck kinetic model
The diffusion limit of kinetic systems has been subject of numerous studies since prominent works of Lebowitz et al. [1] and van Kampen [2]. More recently, the topic has seen a fresh interest from the rarefied gas simulation perspective. In particular, Fok ...
2021Analysis of Spiral-Grooved Gas Journal Bearings by the Narrow-Groove Theory and the Finite Element Method At Large Eccentricities
Jürg Alexander Schiffmann, Eliott Philippe Guenat, Elia Iseli
A finite groove approach (FGA), based on the finite element method (FEM), is used for analyzing the static and dynamic behavior of spiral-grooved aerodynamic journal bearings at different eccentricities, number of grooves, and compressibility numbers. The ...
2020Crack front waves: A 3D dynamic response to a local perturbation of tensile and shear cracks
Jean-François Molinari, Fabian Barras, Damien Spielmann, Fatima-Ezzahra Fekak
Crack front waves are long-lived perturbations propagating along the crack front. They are triggered by heterogeneities on the crack plane, as for instance tough asperities, which disturb the crack front shape. Crack front waves are thought to leave a trac ...
PERGAMON-ELSEVIER SCIENCE LTD2020Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine with Partial-Admission
Jan Van Herle, Jürg Alexander Schiffmann, Patrick Hubert Wagner
A micro steam turbine with a tip diameter of 15mm was designed and experimentally characterized. At the nominal mass flow rate and total-to-total pressure ratio of 2.3 kgh-1 and 2, respectively, the turbine yields a power of 34W and a total-to-static isent ...
2020Theoretical and Experimental Investigation of a 34 Watt Radial-Inflow Steam Turbine with Partial-Admission
Jan Van Herle, Jürg Alexander Schiffmann, Patrick Hubert Wagner
A micro steam turbine with a tip diameter of 15 mm was designed and experimentally characterized. At the nominal mass flow rate and total-to-total pressure ratio of 2.3 kg/h and 2, respectively, the turbine yields a power of 34 W and a total-to-static isen ...
2020Deformation of porous flexible strip in low and moderate Reynolds number flows
François Gallaire, Pedro Miguel Nunes Pereira de Almeida Reis, Matteo Pezzulla
We present results from a combined experimental and numerical investigation of the fluid-structure interaction of cantilevered porous flexible strips, towed through a fluid bath. We characterize the steady-state deformation of the strips and their associat ...
AMER PHYSICAL SOC2020Comparative study between Cubic and Ellipsoidal Fokker-Planck kinetic models
Motivated by improving the performance of particle-based Monte-Carlo simulations in the transitional regime, Fokker–Planck kinetic models have been devised and studied as approximations of the Boltzmann collision operator. By generalizing the linear drift ...
2019Performance potential of gas foil thrust bearings enhanced with spiral grooves
Jürg Alexander Schiffmann, Eliott Philippe Guenat
The upscaling of turbomachinery using gas foil thrust bearings is limited because of their limited load capacity and the thermal issues linked with very thin film thickness. The improvement potential of spiral grooves manufactured on the top-foil of such b ...
2019