PURR Registry

Subject

Physics 2

Creator

Type

Dataset 4

Date

2022 1
2021 2
2020 1

subject: Mechanical Engineering creator: Pavlos Vlachos, 0000-0002-8040-9257

Total is 4 Results

The role of absorbed energy on the oscillation mode of an air bubble in a cavitation-induced acoustic field

10.4231/MV0J-XM83

Javad Eshraghi , Pavlos Vlachos , Sayantan Bhattacharya

11/15/2022

When an acoustic pressure drives a gas bubble in a liquid, the bubble undergoes volume oscillation, i.e., the radial expansion and contraction of the bubble without varying its shape. However, if the amplitude of the driving waves exceeds a...

acoustic signals Cavitation Mechanical Engineering oscillation

Estimation of the Probability Density Function of Random Displacements from Images

10.4231/34TJ-S109

Adib Ahmadzadegan , Arezoo Ardekani , Pavlos Vlachos

07/27/2020

We introduce a novel approach to Image-based Probability Estimation of Displacement (iPED) which is direct estimation of the PDF of displacement of racers within images. Data sets to reproduce the plots and sample images are available here.

Diffusion measurement image processing Mechanical Engineering particle image velocimetry Probability density function estimation Random Process

A data assimilation method for analysis of cavitation bubble dynamics

10.4231/0YAM-9T87

Arezoo Ardekani , Javad Eshraghi , Pavlos Vlachos

04/13/2021

Here, we present a novel state-observer data-assimilation technique designed to fuse time-resolved cavitation bubble diameter measurements with a governing model to yield enhanced Spatio-temporal prediction of the cavitation bubble dynamics.

Cavitation Data assimilation Experimental Tests Fluid Mechanics image processing Mechanical Engineering Physics PID controller