Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves

Pietro D. Tomaselli; Erik Damgaard Christensen

Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves

Pietro D. Tomaselli
, Erik Damgaard Christensen

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

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Abstract

The main challenge in CFD multiphase simulations of breaking waves is the wide range of interfacial length scales occurring in the flow: from the free surface measurable in meters down to the entrapped air bubbles with size of a fraction of a millimeter. This paper presents a preliminary investigation on a CFD model capable of handling this problem. The model is based on a solver, available in the open-source CFD toolkit OpenFOAM, which combines the Eulerian multi-fluid approach for dispersed flows with a numerical interface sharpening method. The solver, enhanced with additional formulations for mass and momentum transfer among phases, was satisfactorily tested against an experimental bubble column flow. The model was then used to simulate the propagation of a laboratory solitary breaking wave. The motion of the free surface was successfully reproduced up to the breaking point. Further implementations are needed to simulate the air entrainment phenomenon

Original language	English
Title of host publication	Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering
Number of pages	10
Publication date	2015
Article number	OMAE2015-41640
Publication status	Published - 2015
Event	ASME 2015 34^th International Conference on Ocean, Offshore and Arctic Engineering - St John’s, Canada Duration: 31 May 2015 → 5 Jun 2015 Conference number: 34

Conference

Conference	ASME 2015 34^th International Conference on Ocean, Offshore and Arctic Engineering
Number	34
Country/Territory	Canada
City	St John’s
Period	31/05/2015 → 05/06/2015

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@inproceedings{435a9440485042a48644f7504a3c9ea5,

title = "Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves",

abstract = "The main challenge in CFD multiphase simulations of breaking waves is the wide range of interfacial length scales occurring in the flow: from the free surface measurable in meters down to the entrapped air bubbles with size of a fraction of a millimeter. This paper presents a preliminary investigation on a CFD model capable of handling this problem. The model is based on a solver, available in the open-source CFD toolkit OpenFOAM, which combines the Eulerian multi-fluid approach for dispersed flows with a numerical interface sharpening method. The solver, enhanced with additional formulations for mass and momentum transfer among phases, was satisfactorily tested against an experimental bubble column flow. The model was then used to simulate the propagation of a laboratory solitary breaking wave. The motion of the free surface was successfully reproduced up to the breaking point. Further implementations are needed to simulate the air entrainment phenomenon",

author = "Tomaselli, \{Pietro D.\} and Christensen, \{Erik Damgaard\}",

year = "2015",

language = "English",

booktitle = "Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering",

note = "ASME 2015 34<sup>th</sup> International Conference on Ocean, Offshore and Arctic Engineering, OMAE2015 ; Conference date: 31-05-2015 Through 05-06-2015",

}

Tomaselli, PD & Christensen, ED 2015, Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves. in Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering., OMAE2015-41640, ASME 2015 34^th International Conference on Ocean, Offshore and Arctic Engineering, St John’s, Newfoundland and Labrador, Canada, 31/05/2015.

Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves. / Tomaselli, Pietro D.; Christensen, Erik Damgaard.
Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering. 2015. OMAE2015-41640.

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

TY - GEN

T1 - Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves

AU - Tomaselli, Pietro D.

AU - Christensen, Erik Damgaard

N1 - Conference code: 34

PY - 2015

Y1 - 2015

N2 - The main challenge in CFD multiphase simulations of breaking waves is the wide range of interfacial length scales occurring in the flow: from the free surface measurable in meters down to the entrapped air bubbles with size of a fraction of a millimeter. This paper presents a preliminary investigation on a CFD model capable of handling this problem. The model is based on a solver, available in the open-source CFD toolkit OpenFOAM, which combines the Eulerian multi-fluid approach for dispersed flows with a numerical interface sharpening method. The solver, enhanced with additional formulations for mass and momentum transfer among phases, was satisfactorily tested against an experimental bubble column flow. The model was then used to simulate the propagation of a laboratory solitary breaking wave. The motion of the free surface was successfully reproduced up to the breaking point. Further implementations are needed to simulate the air entrainment phenomenon

AB - The main challenge in CFD multiphase simulations of breaking waves is the wide range of interfacial length scales occurring in the flow: from the free surface measurable in meters down to the entrapped air bubbles with size of a fraction of a millimeter. This paper presents a preliminary investigation on a CFD model capable of handling this problem. The model is based on a solver, available in the open-source CFD toolkit OpenFOAM, which combines the Eulerian multi-fluid approach for dispersed flows with a numerical interface sharpening method. The solver, enhanced with additional formulations for mass and momentum transfer among phases, was satisfactorily tested against an experimental bubble column flow. The model was then used to simulate the propagation of a laboratory solitary breaking wave. The motion of the free surface was successfully reproduced up to the breaking point. Further implementations are needed to simulate the air entrainment phenomenon

M3 - Article in proceedings

BT - Proceedings of the ASME 34th International Conference on Ocean, Offshore and Arctic Engineering

T2 - ASME 2015 34<sup>th</sup> International Conference on Ocean, Offshore and Arctic Engineering

Y2 - 31 May 2015 through 5 June 2015

ER -

Investigation on the Use of a Multiphase Eulerian CFD solver to simulate breaking waves

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