Multiphase CFD modelling and PIV validation of a UASB reactor

Camila D'Bastiani; Jéferson Luis Alba; Gabriel Tomazzoni Mazzarotto; Severino Rodrigues De Farias Neto; Lademir Luiz Beal; Anthony Reynolds; David Kennedy

doi:10.1063/1.5113991

Multiphase CFD modelling and PIV validation of a UASB reactor

Camila D'Bastiani, Jéferson Luis Alba, Gabriel Tomazzoni Mazzarotto, Severino Rodrigues De Farias Neto, Lademir Luiz Beal, Anthony Reynolds, David Kennedy

School of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Upflow anaerobic sludge blanket (UASB) reactors stand out as a feasible option for treating wastewaters while generating a valuable amount of biogas. It is known that the efficiency of UASB reactors is closely linked to its hydrodynamics. Therefore, understanding the role of each phase (solids, liquid and gas) in the mixing conditions inside the reactor and having validated numerical models for predicting the flow behavior has become fundamental for the design and optimization of UASB reactors. In this context this work aims to develop and validate a three phase Computational Fluid Dynamics (CFD) model of an UASB reactor. Eulerian-Eulerian laminar three-dimensional multiphase simulations were carried out using Fluent 16.2. The model was validated using Particle Image Velocimetry (PIV) experiments. The reactor was divided into four regions, according to its mixing conditions. Validation results showed differences between experimental and computational results for the liquid velocity to be less than 4%. Dead zones accounted for 0.02% of the total volume of the reactor. From the simulation results, a sludge wash out of 179mg·L^-1 was found. The validated model can be further used for optimization studies for this type of wastewater treatment bioreactor.

Original language	English
Title of host publication	International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018
Editors	T.E. Simos, T.E. Simos, T.E. Simos, T.E. Simos, Ch. Tsitouras, T.E. Simos
Publisher	American Institute of Physics Inc.
ISBN (Electronic)	9780735418547
DOIs	https://doi.org/10.1063/1.5113991
Publication status	Published - 24 Jul 2019
Event	International Conference on Numerical Analysis and Applied Mathematics 2018, ICNAAM 2018 - Rhodes, Greece Duration: 13 Sep 2018 → 18 Sep 2018

Publication series

Name	AIP Conference Proceedings
Volume	2116
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	International Conference on Numerical Analysis and Applied Mathematics 2018, ICNAAM 2018
Country/Territory	Greece
City	Rhodes
Period	13/09/18 → 18/09/18

Access to Document

10.1063/1.5113991

https://arrow.tudublin.ie/engschmeccon/78Licence: CC BY-NC-SA

Cite this

D'Bastiani, C., Alba, J. L., Mazzarotto, G. T., Neto, S. R. D. F., Beal, L. L., Reynolds, A., & Kennedy, D. (2019). Multiphase CFD modelling and PIV validation of a UASB reactor. In T. E. Simos, T. E. Simos, T. E. Simos, T. E. Simos, C. Tsitouras, & T. E. Simos (Eds.), International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018 Article 030007 (AIP Conference Proceedings; Vol. 2116). American Institute of Physics Inc.. https://doi.org/10.1063/1.5113991

D'Bastiani, Camila ; Alba, Jéferson Luis ; Mazzarotto, Gabriel Tomazzoni et al. / Multiphase CFD modelling and PIV validation of a UASB reactor. International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018. editor / T.E. Simos ; T.E. Simos ; T.E. Simos ; T.E. Simos ; Ch. Tsitouras ; T.E. Simos. American Institute of Physics Inc., 2019. (AIP Conference Proceedings).

@inproceedings{c29e39d26aab4577a9b57881c8c75d78,

title = "Multiphase CFD modelling and PIV validation of a UASB reactor",

abstract = "Upflow anaerobic sludge blanket (UASB) reactors stand out as a feasible option for treating wastewaters while generating a valuable amount of biogas. It is known that the efficiency of UASB reactors is closely linked to its hydrodynamics. Therefore, understanding the role of each phase (solids, liquid and gas) in the mixing conditions inside the reactor and having validated numerical models for predicting the flow behavior has become fundamental for the design and optimization of UASB reactors. In this context this work aims to develop and validate a three phase Computational Fluid Dynamics (CFD) model of an UASB reactor. Eulerian-Eulerian laminar three-dimensional multiphase simulations were carried out using Fluent 16.2. The model was validated using Particle Image Velocimetry (PIV) experiments. The reactor was divided into four regions, according to its mixing conditions. Validation results showed differences between experimental and computational results for the liquid velocity to be less than 4\%. Dead zones accounted for 0.02\% of the total volume of the reactor. From the simulation results, a sludge wash out of 179mg·L-1 was found. The validated model can be further used for optimization studies for this type of wastewater treatment bioreactor.",

author = "Camila D'Bastiani and Alba, \{J{\'e}ferson Luis\} and Mazzarotto, \{Gabriel Tomazzoni\} and Neto, \{Severino Rodrigues De Farias\} and Beal, \{Lademir Luiz\} and Anthony Reynolds and David Kennedy",

note = "Publisher Copyright: {\textcopyright} 2019 Author(s).; International Conference on Numerical Analysis and Applied Mathematics 2018, ICNAAM 2018 ; Conference date: 13-09-2018 Through 18-09-2018",

year = "2019",

month = jul,

day = "24",

doi = "10.1063/1.5113991",

language = "English",

series = "AIP Conference Proceedings",

publisher = "American Institute of Physics Inc.",

editor = "T.E. Simos and T.E. Simos and T.E. Simos and T.E. Simos and Ch. Tsitouras and T.E. Simos",

booktitle = "International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018",

}

D'Bastiani, C, Alba, JL, Mazzarotto, GT, Neto, SRDF, Beal, LL, Reynolds, A & Kennedy, D 2019, Multiphase CFD modelling and PIV validation of a UASB reactor. in TE Simos, TE Simos, TE Simos, TE Simos, C Tsitouras & TE Simos (eds), International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018., 030007, AIP Conference Proceedings, vol. 2116, American Institute of Physics Inc., International Conference on Numerical Analysis and Applied Mathematics 2018, ICNAAM 2018, Rhodes, Greece, 13/09/18. https://doi.org/10.1063/1.5113991

Multiphase CFD modelling and PIV validation of a UASB reactor. / D'Bastiani, Camila; Alba, Jéferson Luis; Mazzarotto, Gabriel Tomazzoni et al.
International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018. ed. / T.E. Simos; T.E. Simos; T.E. Simos; T.E. Simos; Ch. Tsitouras; T.E. Simos. American Institute of Physics Inc., 2019. 030007 (AIP Conference Proceedings; Vol. 2116).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - Multiphase CFD modelling and PIV validation of a UASB reactor

AU - D'Bastiani, Camila

AU - Alba, Jéferson Luis

AU - Mazzarotto, Gabriel Tomazzoni

AU - Neto, Severino Rodrigues De Farias

AU - Beal, Lademir Luiz

AU - Reynolds, Anthony

AU - Kennedy, David

PY - 2019/7/24

Y1 - 2019/7/24

N2 - Upflow anaerobic sludge blanket (UASB) reactors stand out as a feasible option for treating wastewaters while generating a valuable amount of biogas. It is known that the efficiency of UASB reactors is closely linked to its hydrodynamics. Therefore, understanding the role of each phase (solids, liquid and gas) in the mixing conditions inside the reactor and having validated numerical models for predicting the flow behavior has become fundamental for the design and optimization of UASB reactors. In this context this work aims to develop and validate a three phase Computational Fluid Dynamics (CFD) model of an UASB reactor. Eulerian-Eulerian laminar three-dimensional multiphase simulations were carried out using Fluent 16.2. The model was validated using Particle Image Velocimetry (PIV) experiments. The reactor was divided into four regions, according to its mixing conditions. Validation results showed differences between experimental and computational results for the liquid velocity to be less than 4%. Dead zones accounted for 0.02% of the total volume of the reactor. From the simulation results, a sludge wash out of 179mg·L-1 was found. The validated model can be further used for optimization studies for this type of wastewater treatment bioreactor.

AB - Upflow anaerobic sludge blanket (UASB) reactors stand out as a feasible option for treating wastewaters while generating a valuable amount of biogas. It is known that the efficiency of UASB reactors is closely linked to its hydrodynamics. Therefore, understanding the role of each phase (solids, liquid and gas) in the mixing conditions inside the reactor and having validated numerical models for predicting the flow behavior has become fundamental for the design and optimization of UASB reactors. In this context this work aims to develop and validate a three phase Computational Fluid Dynamics (CFD) model of an UASB reactor. Eulerian-Eulerian laminar three-dimensional multiphase simulations were carried out using Fluent 16.2. The model was validated using Particle Image Velocimetry (PIV) experiments. The reactor was divided into four regions, according to its mixing conditions. Validation results showed differences between experimental and computational results for the liquid velocity to be less than 4%. Dead zones accounted for 0.02% of the total volume of the reactor. From the simulation results, a sludge wash out of 179mg·L-1 was found. The validated model can be further used for optimization studies for this type of wastewater treatment bioreactor.

UR - https://www.scopus.com/pages/publications/85069963154

U2 - 10.1063/1.5113991

DO - 10.1063/1.5113991

M3 - Conference contribution

AN - SCOPUS:85069963154

T3 - AIP Conference Proceedings

BT - International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018

A2 - Simos, T.E.

A2 - Tsitouras, Ch.

A2 - Simos, T.E.

PB - American Institute of Physics Inc.

T2 - International Conference on Numerical Analysis and Applied Mathematics 2018, ICNAAM 2018

Y2 - 13 September 2018 through 18 September 2018

ER -

D'Bastiani C, Alba JL, Mazzarotto GT, Neto SRDF, Beal LL, Reynolds A et al. Multiphase CFD modelling and PIV validation of a UASB reactor. In Simos TE, Simos TE, Simos TE, Simos TE, Tsitouras C, Simos TE, editors, International Conference on Numerical Analysis and Applied Mathematics, ICNAAM 2018. American Institute of Physics Inc. 2019. 030007. (AIP Conference Proceedings). doi: 10.1063/1.5113991

Multiphase CFD modelling and PIV validation of a UASB reactor

Abstract

Publication series

Conference

Access to Document

Fingerprint

Cite this