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On Developments of k-τ and k-ω Models for Near-Wall Turbulence of Engineering Duct Flows

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Old City Publishing, Inc.
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Keywords
  • The Performance Of A Modified K-Tau Model Is Assessed In Predicting The Turbulent Flow And Forced Co
  • Under Fully Developed Conditions
  • The Presented Model Is Based On More Physical Grounds Using Bounded Time-Scale
  • Local Turbulent Reynolds Number
  • A Dynamic C-Mu (Accounts For Variation Of C-Mu) And Dynamic Coefficients For The Reynolds Stress Ten
  • Instead Of Constant Values In Common Modeling Procedures
  • Because All The Key Coefficients Have Dynamic Behavior And Vary Due To Local Turbulence Character
  • The Model Is Found To Be Stable And Superior To The Traditional K-Epsilon Model
  • In Addition
  • Due To Dynamic Coefficients And Bounded Time-Scale
  • The Model Can Be Used For A Large Number Of Reynolds Numbers
  • Both High And Low Reynolds Numbers
  • The Presented K-Tau Model Alleviates The Major Problem Of The K-Epsilon Model Namely
  • The Lack Of Natural Boundary Conditions
  • Based On Idea Of Kolmogorov Time-Scale A Boundary Condition At The Wall Is Also Proposed
  • A Bounded K-Omega Model For Near Wall Turbulence Is Also Presented And Comparison With Other Well Es

Abstract

On Developments of k-τ and k-ω Models for Near-Wall Turbulence of Engineering Duct Flows - DTU Orbit (27/02/14) On Developments of k-τ and k-ω Models for Near-Wall Turbulence of Engineering Duct Flows - DTU Orbit (27/02/14) Rokni M, Sundén B. On Developments of k-τ and k-ω Models for Near-Wall Turbulence of Engineering Duct Flows. International Journal of Transport Phenomena. 2009;11(3):233-253.

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