Following the recent discovery of new three-dimensional particle attractors driven by joint (fluid) thermovibrational and (particle) inertial effects in closed cavities with various shapes and symmetries [M. Lappa, Phys. Fluids 26(9), 093301 (2014); ibid. 31(7), 073303 (2019)], the present analysis continues this line of inquiry by probing influential factors hitherto not considered; among them, the role of the steady component of thermovibrational convection, i.e., the time-averaged velocity field that is developed by the fluid due to the non-linear nature of the overarching balance equations. It is shown how this apparently innocuous problem opens up a vast parameter space, which includes several variables, comprising (but not limited to) the frequency of vibrations, the so-called “Gershuni number,” the size of particles (Stokes number), and their relative density with respect to the surrounding fluid (density ratio). A variety of new particle structures (2D and 3D) are uncovered and a complete analysis of their morphology is presented. The results reveal an increase in the multiplicity of solutions brought in by the counter-intuitive triadic relationship among particle inertial effects and the instantaneous and time-averaged convective thermovibrational phenomena. Finally, a universal formula is provided that is able to predict correctly the time required for the formation of all the observed structures.
Skip Nav Destination
Article navigation
May 2020
Research Article|
May 28 2020
Symmetry breaking phenomena in thermovibrationally driven particle accumulation structures
Marcello Lappa
;
Marcello Lappa
a)
Department of Mechanical and Aerospace Engineering, University of Strathclyde
, James Weir Building, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
a)Author to whom correspondence should be addressed: marcello.lappa@strath.ac.uk
Search for other works by this author on:
Thomas Burel
Thomas Burel
Department of Mechanical and Aerospace Engineering, University of Strathclyde
, James Weir Building, 75 Montrose Street, Glasgow G1 1XJ, United Kingdom
Search for other works by this author on:
a)Author to whom correspondence should be addressed: marcello.lappa@strath.ac.uk
Physics of Fluids 32, 053314 (2020)
Article history
Received:
March 12 2020
Accepted:
May 06 2020
Citation
Marcello Lappa, Thomas Burel; Symmetry breaking phenomena in thermovibrationally driven particle accumulation structures. Physics of Fluids 1 May 2020; 32 (5): 053314. https://doi.org/10.1063/5.0007472
Download citation file:
Pay-Per-View Access
$40.00
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Citing articles via
On Oreology, the fracture and flow of “milk's favorite cookie®”
Crystal E. Owens, Max R. Fan (范瑞), et al.
Fluid–structure interaction on vibrating square prisms considering interference effects
Zengshun Chen (陈增顺), 陈增顺, et al.
A unified theory for bubble dynamics
A-Man Zhang (张阿漫), 张阿漫, et al.
Related Content
Three-dimensional solid particle self-assembly in thermovibrational flow: The case with unidirectional temperature gradient and concurrent vibrations
Physics of Fluids (February 2023)
The patterning behaviour and accumulation of spherical particles in a vibrated non-isothermal liquid
Physics of Fluids (September 2014)
On the relationship between solid particle attractors and thermal inhomogeneities in vibrationally driven fluid-particle systems
Physics of Fluids (October 2023)