Two-dimensional instability of flow in a rough channel
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
| Original language | English |
|---|---|
| Journal / Publication | Physics of Fluids |
| Volume | 17 |
| Issue number | 4 |
| Publication status | Published - Apr 2005 |
| Externally published | Yes |
Link(s)
Abstract
Linear stability of a two-dimensional flow in a channel with distributed surface roughness is considered. The structure of the disturbance field is related to the structure of the roughness when the ratio of the respective wave numbers is rational; they are not related if this ratio is irrational. It is shown that the stability problem is not unique in the former case but unique in the latter. It is found that disturbances in the form of traveling waves are destabilized by the presence of the roughness. A very good approximation of the critical Reynolds numbers can be found using only the dominant Fourier mode to represent roughness geometry. © 2005 American Institute of Physics.
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Citation Format(s)
Two-dimensional instability of flow in a rough channel. / Floryan, J. M.
In: Physics of Fluids, Vol. 17, No. 4, 04.2005.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
