Electrons localized on the surface of liquid helium have been investigated quite extensively as an example of a nearly ideal two-dimensional Coulomb system [1,2]. Recently it has been observed that the homogeneous spatial distribution of the surface charge can be destroyed by self-trapping of the electrons in macroscopic dimples, which appear when the electric field pulling the charges toward t...

In order to improve thermo-hydraulic performance of laminar flow various techniques has been used among which a plain tube with twisted tape insert is widely used. The main objective numerically study field in enhance heat transfer, through circular pipe built with/without Dimples on strip. Effect and dimple strip thermo hydraulic discussed. analysis results for range 800<Re<2000 obtained...

Abstract An experimental investigation was performed for investigating the tribological performance of micro-dimple surface texture patterns on a cylindrical in realistic operating environment starved lubrication. Micro-dimples were generated by dual-frequency texturing method, which high-frequency (16.3 kHz) three-dimensional (3D) vibration and low-frequency (230 Hz) one-dimensional (1D) appli...