Abstract
We propose a new turbulence model which is modified from the low-Reynolds-number k-ε{lunate} model developed by Nagano and Tagawa. The main improvement is made by the introduction of the Kolmogorov velocity scale uε{lunate} ≡ (νε{lunate}) 1 4 instead of the friction velocity uτ. We have also reevaluated the model constants in the transport equations. With these modifications, it is shown that the present model predicts quite successfully the separating and reattaching turbulent flows downstream of a backward-facing step at various Reynolds numbers, which have been very difficult to simulate with any previous k-ε{lunate} model.
| Original language | English |
|---|---|
| Pages (from-to) | 85-94 |
| Number of pages | 10 |
| Journal | Journal of Wind Engineering and Industrial Aerodynamics |
| Volume | 46-47 |
| Issue number | C |
| DOIs | |
| Publication status | Published - Jan 1 1993 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Civil and Structural Engineering
- Renewable Energy, Sustainability and the Environment
- Mechanical Engineering
Cite this
Numerical prediction of separating and reattaching flows with a modified low-Reynolds-number k-ε{lunate} model. / Abe, Ken-Ichi; Nagano, Y.; Kondoh, T.
In: Journal of Wind Engineering and Industrial Aerodynamics, Vol. 46-47, No. C, 01.01.1993, p. 85-94.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Numerical prediction of separating and reattaching flows with a modified low-Reynolds-number k-ε{lunate} model
AU - Abe, Ken-Ichi
AU - Nagano, Y.
AU - Kondoh, T.
PY - 1993/1/1
Y1 - 1993/1/1
N2 - We propose a new turbulence model which is modified from the low-Reynolds-number k-ε{lunate} model developed by Nagano and Tagawa. The main improvement is made by the introduction of the Kolmogorov velocity scale uε{lunate} ≡ (νε{lunate}) 1 4 instead of the friction velocity uτ. We have also reevaluated the model constants in the transport equations. With these modifications, it is shown that the present model predicts quite successfully the separating and reattaching turbulent flows downstream of a backward-facing step at various Reynolds numbers, which have been very difficult to simulate with any previous k-ε{lunate} model.
AB - We propose a new turbulence model which is modified from the low-Reynolds-number k-ε{lunate} model developed by Nagano and Tagawa. The main improvement is made by the introduction of the Kolmogorov velocity scale uε{lunate} ≡ (νε{lunate}) 1 4 instead of the friction velocity uτ. We have also reevaluated the model constants in the transport equations. With these modifications, it is shown that the present model predicts quite successfully the separating and reattaching turbulent flows downstream of a backward-facing step at various Reynolds numbers, which have been very difficult to simulate with any previous k-ε{lunate} model.
UR - http://www.scopus.com/inward/record.url?scp=0027643258&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027643258&partnerID=8YFLogxK
U2 - 10.1016/0167-6105(93)90117-7
DO - 10.1016/0167-6105(93)90117-7
M3 - Article
AN - SCOPUS:0027643258
VL - 46-47
SP - 85
EP - 94
JO - Journal of Industrial Aerodynamics
JF - Journal of Industrial Aerodynamics
SN - 0167-6105
IS - C
ER -