Reattachment of Three-Dimensional Flow Adjacent to Backward-Facing Step  

Oleh:

Nie, J. H. ; Armaly, B. F.

Jenis: Article from Bulletin/Magazine
Dalam koleksi: Journal of Heat Transfer vol. 125 no. 3 (Jun. 2003), page 422-428.
Topik: backward-facing step; reaatchment; three - dimensional flow; adjacent; backward - facing step

Ketersediaan

Perpustakaan Pusat (Semanggi) Nomor Panggil: JJ90.6 Non-tandon: 1 (dapat dipinjam: 0) Tandon: tidak ada

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Isi artikel

Numerical simulations for incompressible three - dimensional laminar forced convection flow adjacent to backward - facing step in rectangular duct are performed to examine the reattachment region of the separated flow on the stepped wall. The feasibility of utilizing the two - dimensional flow definition and the limiting streamline definition for identifying the reattachment line / region was examined. The downwash and the "jet - like" flow that develops near the sidewall creates significant spanwise flow adjacent to the stepped wall, making it difficult to identify a reattachment line / region both numerically and experimentally. The use of the line / region that identifies the location on a plane adjacent to the stepped wall where the gradient of the mean streamwise velocity component is zero (du / dy |y = 0 = 0) is recommended for code and apparatus validation of three-dimensional separated flow.

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