Details

Autor(en) / Beteiligte

• Karcher, Ch
• Steen, P. H.

Titel

High-Reynolds-number flow in a narrow gap driven by solidification. II. Planar-flow casting application

Ist Teil von

• Physics of fluids (1994), 2001-04, Vol.13 (4), p.834-840

Erscheinungsjahr

2001

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Flow driven by solidification is studied in the limit when fluid dynamics and heat transfer decouple. This occurs for processes that are characterized by a long flat solidification front and/or thin molten zones. The gap-averaged governing equations, derived in part I [Phys. Fluids 13, 826 (2001)], are applied to planar-flow melt-spinning where liquid metal, held by surface tension in the gap between the injection nozzle and spinning chill-wheel, forms a long thin puddle. A Karman–Pohlhausen approach that includes mean flow and shear flow components leads to velocity and pressure distributions consistent with observation from experiment. A pressure rise along the flow path due to solidification suction competes with the pressure decrease due to convergent Bernoulli flow.