Aurélien Vadrot

Aurélien Vadrot
Aarhus University | AU · Department of Mechanical and Production Engineering - Fluids and Energy

PhD

About

12
Publications
2,251
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73
Citations
Introduction
Currently working at Aarhus university on Data-driven wall-turbulence modeling.
Additional affiliations
September 2021 - June 2022
Ecole Centrale de Lyon
Position
  • PostDoc Position
September 2018 - September 2021
Ecole Centrale de Lyon
Position
  • PhD Student
Description
  • Numerical Simulation of dense gas flows
March 2018 - September 2018
Ecole Centrale de Lyon
Position
  • Research Assistant
Description
  • Work on direct numerical simulation (DNS) of a turbulent shear layer in a dense gas with highly compressible effects
Education
September 2017 - August 2018
Université Paris-Saclay
Field of study
  • Fluid dynamics and energetics
September 2015 - August 2018
Ecole normale supérieure de Cachan
Field of study
  • Civil Engineering
September 2014 - July 2015
Ecole normale supérieure de Cachan
Field of study
  • Applied Mathematics

Publications

Publications (12)
Presentation
Full-text available
PhD Defense defended on Thursday, 28th October 2021 - Jury members: Guillaume Balarac - Gianluca Iaccarino - Luminita Danaila - Alberto Guardone - Supervisors: Christophe Corre - Alexis Giauque
Thesis
Full-text available
The present work is devoted to the analysis and modeling of turbulence in flows of densegases (DG). The interest for these gases mainly comes from the Organic Rankine Cycles (ORC) turbine industry. ORCs rely on the so-called and widely used William Rankine’s cycle. The organic working fluid (instead of water) is expanded after being evaporated so a...
Article
Full-text available
The present article investigates the effects of a BZT (Bethe-Zel'dovich-Thompson) dense gas (FC-70) on the development of turbulent compressible mixing layers at three different convective Mach numbers Mc = 0,1; 1,1 and 2,2. This study extends previous analysis conducted at Mc = 1,1 (Vadrot et al. 2020). Several 3D direct numerical simulation (DNS)...
Article
Full-text available
Of interest to the research community dealing with real gas flows, this study analyzes the influence of the physical complexity of real gases on the amplitude of subgrid-scale (SGS) terms present in the filtered Navier–Stokes equations to be solved in large eddy simulations. The direct numerical simulation results of three academic configurations (...
Chapter
It is known from the literature that Large Eddy Simulations of dense gas flows can prove very useful in order to better understand the behavior of friction losses in Organic Rankine Cycle turbines and expanders. Yet, no dedicated turbulence closure models exist for such flows. In this study, the authors lay the fondations for the development of tur...
Presentation
Full-text available
This presentation provides the latest developments of the ANR EDGES project. By filtering DNS results of Homogeneous Isotropic Turbulence, it is shown that new subgrid-scale terms need to be modelled which have received no attention so far. This work is relevant in the context of LES and RANS simulations of ORC turbines.
Chapter
Full-text available
In order to assess the specific characteristics of turbulence in dense gas flows with respect to ideal gas flows, Direct Numerical Simulations are performed for both FC-70 described using Martin-Hou Equation of State (EoS) and a reference ideal gas, in the case of a forced Homogeneous Isotropic Turbulence (HIT) configuration and of a temporal compr...
Article
Full-text available
This study investigates the effects of a BZT (Bethe-Zel'dovich-Thompson) dense gas (FC-70) on the development of a turbulent compressible mixing layer at a convective Mach number M c = 1.1. 3D direct numerical simulations (DNS) are performed both with FC-70 and air. The initial thermodynamic state for FC-70 lies inside the inversion region where th...
Preprint
Full-text available
Analysis of turbulence characteristics in a temporal dense gas compressible mixing layer using direct numerical simulation - Volume 893 - Aurélien Vadrot, Alexis Giauque, Christophe Corre
Article
Full-text available
Direct Numerical Simulations (DNS) of forced homogeneous isotropic turbulence in a dense gas (FC-70), accurately described by a complex EoS, are computed for a turbulent Mach number of 0.8. In a numerical experiment, results are compared to the ones obtained when considering the fluid as a perfect gas. It is found that the dense gas displays a deep...
Article
Over the last fifty years, the interaction factor method has been widely used to address the vertical displacement and the increased deformation of conventional pile groups subjected to mechanical loads when group effects and interactions occur among the piles. Design charts and analytical models have been proposed to serve the considered analysis...
Article
This study investigates the effect of non-linear soil deformation on the displacement interaction among energy piles. The work is based on interaction factor analyses of full-scale pile group tests, whose results are compared with experimental evidence. The results presented highlight the tendency of interaction factor analyses that ignore non-line...

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Projects

Project (1)
Project
Improve confidence in CFD predictions of turbulent dense gas flows for ORC expander applications by assessing available turbulence closure models and develop new models for RANS and LES approaches