Flow structures on a planar food and drug administration (FDA) nozzle at low and intermediate reynolds number

Corrochano A, Xavier D, Schlatter P, Vinuesa R, Le Clainche S (2021)

Publication Type: Journal article

Publication year: 2021

Journal

Fluids MDPI

Book Volume: 6

Article Number: 4

Journal Issue: 1

DOI: 10.3390/fluids6010004

Abstract

In this paper, we present a general description of the flow structures inside a twodimensional Food and Drug Administration (FDA) nozzle. To this aim, we have performed numerical simulations using the numerical code Nek5000. The topology patters of the solution obtained, identify four different flow regimes when the flow is steady, where the symmetry of the flow breaks down. An additional case has been studied at higher Reynolds number, when the flow is unsteady, finding a vortex street distributed along the expansion pipe of the geometry. Linear stability analysis identifies the evolution of two steady and two unsteady modes. The results obtained have been connected with the changes in the topology of the flow. Finally, higher-order dynamic mode decomposition has been applied to identify the main flow structures in the unsteady flow inside the FDA nozzle. The highest-amplitude dynamic mode decomposition (DMD) modes identified by the method model the vortex street in the expansion of the geometry.

Authors with CRIS profile

Philipp Schlatter

Involved external institutions

Universidad Politécnica de Madrid (UPM) ES Spain (ES) Royal Institute of Technology / Kungliga Tekniska Högskolan (KTH) SE Sweden (SE)

How to cite

APA:

Corrochano, A., Xavier, D., Schlatter, P., Vinuesa, R., & Le Clainche, S. (2021). Flow structures on a planar food and drug administration (FDA) nozzle at low and intermediate reynolds number. Fluids, 6(1). https://doi.org/10.3390/fluids6010004

MLA:

Corrochano, Adrian, et al. "Flow structures on a planar food and drug administration (FDA) nozzle at low and intermediate reynolds number." Fluids 6.1 (2021).

BibTeX: Download