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what is mean of LAMINAR?

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Old   March 12, 2002, 04:25
Default what is mean of LAMINAR?
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www_sun
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what is mean of LAMINAR? What is mean of LVEL?
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Old   March 13, 2002, 11:24
Default Re: what is mean of LAMINAR?
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Michael Malin
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Laminar means laminar flow as opposed to the turbulent flow that occurs a high Reynolds number.

LVEL stands for lengthscale*velocity model, which is an algebraic turbulence model that is valid throughout the laminar, transitional and fully-turbulent regions of a boundary layer. This turbulence model is useful for flow situations characterised by cluttered spaces, such as for example the flow around many closely-spaced objects as encountered in electronics-cooling applications. The model presumes the existence of bounding walls, and so it is not recommended for unconfined flows like free jets.
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Old   March 13, 2002, 20:07
Default Re: what is mean of LAMINAR?
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www_sun
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if so, can I use the LVEL model to simulate the solid-water flow at a high Reynolds number in a straight pipe?
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Old   March 14, 2002, 07:01
Default Re: what is mean of LAMINAR?
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Michael Malin
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You can but the LVEL model knows nothing of turbulence modulation due to solid particles. The k-e model can also be used and there are extensions to account for these effects, if you believe they are important. Look in the advanced multi-phase flow library for examples. I believe there are some in that part of teh library.
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