Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation

Tomoaki Watanabe; Yasuhiko Sakai; Kouji Nagata; Osamu Terashima; Yasumasa Ito; Hiroki Suzuki; Toshiyuki Hayase

doi:10.1007/978-3-642-34384-1_18

Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation

Tomoaki Watanabe, Yasuhiko Sakai, Kouji Nagata, Osamu Terashima, Yasumasa Ito, Hiroki Suzuki, Toshiyuki Hayase

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

1 Citation (Scopus)

Abstract

Eddy diffusivity in a planar turbulent jet with a second-order chemical reaction (A+B→R) is investigated by using direct numerical simulation. Reactant A and B are premixed into the jet flow and the main flow, respectively. The eddy diffusivity of species A on the jet centerline is calculated from the mean concentration of species A and the streamwise turbulent mass flux of the species A. The results show that the chemical reaction makes the eddy diffusivity of species A small, and the effects of the chemical reaction on the eddy diffusivity depend on the Damköhler number. From these results, we can conclude that the gradient diffusion model should be used with considerations of the effects of chemical reactions on eddy diffusivity.

Original language	English
Title of host publication	AsiaSim 2012 - Asia Simulation Conference 2012, Proceedings
Pages	144-150
Number of pages	7
Edition	PART 1
DOIs	https://doi.org/10.1007/978-3-642-34384-1_18
Publication status	Published - 2012
Externally published	Yes
Event	Asia Simulation Conference, AsiaSim 2012 - Shanghai, China Duration: Oct 27 2012 → Oct 30 2012

Publication series

Name	Communications in Computer and Information Science
Number	PART 1
Volume	323 CCIS
ISSN (Print)	1865-0929

Conference

Conference	Asia Simulation Conference, AsiaSim 2012
Country/Territory	China
City	Shanghai
Period	10/27/12 → 10/30/12

Keywords

Chemical Reaction
Direct Numerical Simulation
Eddy Diffusivity
Turbulent Flow

ASJC Scopus subject areas

Computer Science(all)
Mathematics(all)

Access to Document

10.1007/978-3-642-34384-1_18

Cite this

Watanabe, T., Sakai, Y., Nagata, K., Terashima, O., Ito, Y., Suzuki, H., & Hayase, T. (2012). Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation. In AsiaSim 2012 - Asia Simulation Conference 2012, Proceedings (PART 1 ed., pp. 144-150). (Communications in Computer and Information Science; Vol. 323 CCIS, No. PART 1). https://doi.org/10.1007/978-3-642-34384-1_18

Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation. / Watanabe, Tomoaki; Sakai, Yasuhiko; Nagata, Kouji; Terashima, Osamu; Ito, Yasumasa; Suzuki, Hiroki; Hayase, Toshiyuki.

AsiaSim 2012 - Asia Simulation Conference 2012, Proceedings. PART 1. ed. 2012. p. 144-150 (Communications in Computer and Information Science; Vol. 323 CCIS, No. PART 1).

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

Watanabe, T, Sakai, Y, Nagata, K, Terashima, O, Ito, Y, Suzuki, H & Hayase, T 2012, Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation. in AsiaSim 2012 - Asia Simulation Conference 2012, Proceedings. PART 1 edn, Communications in Computer and Information Science, no. PART 1, vol. 323 CCIS, pp. 144-150, Asia Simulation Conference, AsiaSim 2012, Shanghai, China, 10/27/12. https://doi.org/10.1007/978-3-642-34384-1_18

Watanabe, Tomoaki ; Sakai, Yasuhiko ; Nagata, Kouji ; Terashima, Osamu ; Ito, Yasumasa ; Suzuki, Hiroki ; Hayase, Toshiyuki. / Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation. AsiaSim 2012 - Asia Simulation Conference 2012, Proceedings. PART 1. ed. 2012. pp. 144-150 (Communications in Computer and Information Science; PART 1).

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title = "Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation",

abstract = "Eddy diffusivity in a planar turbulent jet with a second-order chemical reaction (A+B→R) is investigated by using direct numerical simulation. Reactant A and B are premixed into the jet flow and the main flow, respectively. The eddy diffusivity of species A on the jet centerline is calculated from the mean concentration of species A and the streamwise turbulent mass flux of the species A. The results show that the chemical reaction makes the eddy diffusivity of species A small, and the effects of the chemical reaction on the eddy diffusivity depend on the Damk{\"o}hler number. From these results, we can conclude that the gradient diffusion model should be used with considerations of the effects of chemical reactions on eddy diffusivity.",

keywords = "Chemical Reaction, Direct Numerical Simulation, Eddy Diffusivity, Turbulent Flow",

author = "Tomoaki Watanabe and Yasuhiko Sakai and Kouji Nagata and Osamu Terashima and Yasumasa Ito and Hiroki Suzuki and Toshiyuki Hayase",

year = "2012",

doi = "10.1007/978-3-642-34384-1_18",

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T1 - Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation

AU - Watanabe, Tomoaki

AU - Sakai, Yasuhiko

AU - Nagata, Kouji

AU - Terashima, Osamu

AU - Ito, Yasumasa

AU - Suzuki, Hiroki

AU - Hayase, Toshiyuki

PY - 2012

Y1 - 2012

N2 - Eddy diffusivity in a planar turbulent jet with a second-order chemical reaction (A+B→R) is investigated by using direct numerical simulation. Reactant A and B are premixed into the jet flow and the main flow, respectively. The eddy diffusivity of species A on the jet centerline is calculated from the mean concentration of species A and the streamwise turbulent mass flux of the species A. The results show that the chemical reaction makes the eddy diffusivity of species A small, and the effects of the chemical reaction on the eddy diffusivity depend on the Damköhler number. From these results, we can conclude that the gradient diffusion model should be used with considerations of the effects of chemical reactions on eddy diffusivity.

AB - Eddy diffusivity in a planar turbulent jet with a second-order chemical reaction (A+B→R) is investigated by using direct numerical simulation. Reactant A and B are premixed into the jet flow and the main flow, respectively. The eddy diffusivity of species A on the jet centerline is calculated from the mean concentration of species A and the streamwise turbulent mass flux of the species A. The results show that the chemical reaction makes the eddy diffusivity of species A small, and the effects of the chemical reaction on the eddy diffusivity depend on the Damköhler number. From these results, we can conclude that the gradient diffusion model should be used with considerations of the effects of chemical reactions on eddy diffusivity.

KW - Chemical Reaction

KW - Direct Numerical Simulation

KW - Eddy Diffusivity

KW - Turbulent Flow

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Investigation of eddy diffusivity in a reactive plane jet by using direct numerical simulation

Abstract

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Keywords

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