Numerical Modeling of Turbulent, Parallel, Round Jets

Although extensive research has been conducted for turbulent single and offset wall jets, relatively little research has been conducted for turbulent parallel jets. Relevant applications include burners, boilers, film cooling, fuel-injection, heating and air-conditioning systems, and designs for pol...

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Veröffentlicht in:2010 DoD High Performance Computing Modernization Program Users Group Conference S. 3 - 7
Hauptverfasser: Allen, J. B., Smith, D. L.
Format: Tagungsbericht
Sprache:Englisch
Veröffentlicht: IEEE 01.06.2010
Schlagworte:
Approximation methods
Equations
Kinetic energy
Mathematical model
Numerical models
parallel jets
Sensitivity
Three dimensional displays
turbulence
ISBN:9781612849867, 1612849865
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Abstract Although extensive research has been conducted for turbulent single and offset wall jets, relatively little research has been conducted for turbulent parallel jets. Relevant applications include burners, boilers, film cooling, fuel-injection, heating and air-conditioning systems, and designs for pollutant exhaust stacks. The objective of the present work is to evaluate the use of Reynolds-averaged Navier-Stokes, k-epsilon, numerical simulations to predict the three-dimensional evolution of twin, isothermal, turbulent, round jets at a Reynold's number (based on jet diameter d and jet exit velocity Ue) of 25,000. Comparisons with existing experimental literature are conducted with respect to the stream wise turbulence intensity. Further, the stream-wise distance to the combined point is evaluated, along with integrations of stream wise momentum flux. This research will offer an enhanced understanding of parallel jet flow interaction in terms of flow entrainment, as well as provide insights into the sensitivity of the numerical results to variations of inlet turbulence.
AbstractList Although extensive research has been conducted for turbulent single and offset wall jets, relatively little research has been conducted for turbulent parallel jets. Relevant applications include burners, boilers, film cooling, fuel-injection, heating and air-conditioning systems, and designs for pollutant exhaust stacks. The objective of the present work is to evaluate the use of Reynolds-averaged Navier-Stokes, k-epsilon, numerical simulations to predict the three-dimensional evolution of twin, isothermal, turbulent, round jets at a Reynold's number (based on jet diameter d and jet exit velocity Ue) of 25,000. Comparisons with existing experimental literature are conducted with respect to the stream wise turbulence intensity. Further, the stream-wise distance to the combined point is evaluated, along with integrations of stream wise momentum flux. This research will offer an enhanced understanding of parallel jet flow interaction in terms of flow entrainment, as well as provide insights into the sensitivity of the numerical results to variations of inlet turbulence.
Author Smith, D. L.
Allen, J. B.
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  givenname: D. L.
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  email: David.L.Smith@usace.army.mil
  organization: Eng. R&D Center, Inf. Technol. Lab., US Army, Vicksburg, MS, USA
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Snippet Although extensive research has been conducted for turbulent single and offset wall jets, relatively little research has been conducted for turbulent parallel...
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SubjectTerms Approximation methods
Equations
Kinetic energy
Mathematical model
Numerical models
parallel jets
Sensitivity
Three dimensional displays
turbulence
Title Numerical Modeling of Turbulent, Parallel, Round Jets
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