Stability of two-phase stratified flow as controlled by laminar/turbulent transition

Journal Article · · International Communications in Heat and Mass Transfer; (United States)

DOI:https://doi.org/10.1016/0735-1933(94)90084-1· OSTI ID:5354762

Brauner, N; Maron, D M ^[1]

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1. Tel-Aviv Univ. (Israel). Dept. of Fluid Mechanics and Heat Transfer

Flow pattern transition from stratified-smooth to stratified-wavy has been usually identified with a condition of neutral stability, where destabilizing effect are due to the inertia of the two-phases. It is shown that this is indeed the case when instability is approached with laminar gas phase. However, when the upper gas phase is turbulent, a destabilizing term appears due to dynamic interaction of the turbulent flow with the perturbed free interface. At the transitional range from laminar to turbulent flow regime the evolution of wavy pattern is not predicted by stability condition and coincides with the laminar/turbulent flow regime transition.

• OSTI ID: 5354762
• Journal Information: International Communications in Heat and Mass Transfer; (United States), Vol. 21:1; ISSN 0735-1933
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
TWO-PHASE FLOW
STABILITY
GAS FLOW
INSTABILITY
LAMINAR FLOW
LIQUID FLOW
TRANSITION FLOW
FLUID FLOW
420400* - Engineering- Heat Transfer & Fluid Flow