Étude expérimentale et numérique des écoulements diphasiques et du diagnostic des échangeurs industriels à plaques et ondes

Abstract : This work deals with experimental and numerical studies of single and two-phase flow distribution in a plate and fin heat exchanger. Flow rates and pressure measurements, as well as visualization using speed camera have been used to characterize the air/water flow at atmospheric pressure and at adiabatic conditions. CFD simulations have permitted to calculate pressure drop in single phase flow of offset strip fins and to simulate two phase flow patterns (bubbles, slug, toric bubbles,...) in the distributor. Tracer experiments using salt and conductimetry allowed to characterize single and two phase flow distribution and to perform a diagnosis of the heat exchanger: find the defaults, their amplitudes and their localizations. All these methods: experimental data, CFD simulations and tracer methodology allowed to point out the important parameters affecting the distribution like same or opposed inlet fluid alimentations, physical properties, distributor design and the flow patterns, to improve overall performances of heat transfer systems
Document type :
Theses
Complete list of metadatas

Cited literature [68 references]  Display  Hide  Download

https://hal.univ-lorraine.fr/tel-01750433
Contributor : Thèses Ul <>
Submitted on : Thursday, March 29, 2018 - 12:46:04 PM
Last modification on : Tuesday, April 10, 2018 - 1:29:34 AM

File

DDOC_T_2012_0406_BEN_SAAD.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : tel-01750433, version 1

Collections

Citation

Selma Ben Saad. Étude expérimentale et numérique des écoulements diphasiques et du diagnostic des échangeurs industriels à plaques et ondes. Autre. Université de Lorraine, 2012. Français. ⟨NNT : 2012LORR0406⟩. ⟨tel-01750433⟩

Share

Metrics

Record views

25

Files downloads

372