Skip to Main content Skip to Navigation
Conference papers

Experimental and Numerical Investigations of Unsteady Flows Downstream Confined Rectangular Obstacles

Abstract : In this work, we present an experimental and numerical study in a horizontal duct with a rectangular cross-section (300 × 30mm2). In the middle of this cross-section, a rectangular obstacle (20 × 10mm2) then a squared obstacle (10 × 10mm2) were placed in order to study experimentally and numerically the vortex shedding and their interactions in the flow. Upstream obstacles, the studied flows are laminar. In our experimental study, the PIV technique was used in order to obtain instantaneous velocity fields downstream the used obstacles. From these measurement results, a post-processing was used (especially the Γ2 criterion) in order to well extract instantaneous vortices contained in the flow downstream obstacles. In parallel with this experimental study, a 2D numerical simulation was achieved in order to be validated by the experimental results. Other complementary PIV measurements were carried out in the duct top by visualizing the flow downstream obstacles in order to study the 3D effects of the flow.
Document type :
Conference papers
Complete list of metadata

https://hal-uphf.archives-ouvertes.fr/hal-03677888
Contributor : Mylène Delrue Connect in order to contact the contributor
Submitted on : Wednesday, May 25, 2022 - 8:40:33 AM
Last modification on : Thursday, May 26, 2022 - 3:48:04 AM

Identifiers

Collections

Citation

Fethi Aloui, Amal Elawady. Experimental and Numerical Investigations of Unsteady Flows Downstream Confined Rectangular Obstacles. ASME 2020 Fluids Engineering Division Summer Meeting collocated with the ASME 2020 Heat Transfer Summer Conference and the ASME 2020 18th International Conference on Nanochannels, Microchannels, and Minichannels, Jul 2020, Virtual Event, France. ⟨10.1115/FEDSM2020-20322⟩. ⟨hal-03677888⟩

Share

Metrics

Record views

2