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- W2917503039 abstract "This part of the lecture first explains the limitations of the Boussinesq Eddy Viscosity hypothesis which forms the basis of all the algebraic and transport equation-based models discussed in Part 1. Unlike laminar viscosity, the eddy viscosity is affected by the shape and nature of the solid boundaries, freestream turbulence intensity and most significantly by the flow history effects. The linear stress-strain relationship is therefore not likely to predict a satisfactory description of a complex turbulent flow situation. Two basic approaches to remove the limitations of the Boussinesq approximation are to use either a Nonlinear Constitutive Relation or a Second Moment Closure based Model. These modeling techniques expected to provide more accurate prediction of complex flows are presented in Sections 2 and 3. Section 4 addresses some important issues in constructing turbulence models for application to compressible flows. A few examples on application of second moment closure and models for compressible flows are demonstrated in Section 5, followed by some concluding remarks" @default.
- W2917503039 created "2019-03-02" @default.
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- W2917503039 date "1994-10-01" @default.
- W2917503039 modified "2023-09-24" @default.
- W2917503039 title "Turbulence modeling for CFD, part 2" @default.
- W2917503039 hasPublicationYear "1994" @default.
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