Behavior of risers with internal flow under various boundary conditions

Conference · Sat Dec 31 04:00:00 EST 1994

OSTI ID:398030

Moe, G ^[1]; Stromsem, K C ^[2]; Fylling, I ^[3]

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1. Norwegian Inst. of Tech., Trondheim (Norway)
2. Conoco, Oslo (Norway)
3. Marintek, Trondheim (Norway)

Fluid conveying pipes such as risers will be influenced by internal and external fluid pressures, and it is well known that these effects can be covered by use of a so called effective axial tension. In this paper it is shown that the centrifugal forces from the internal flow can be covered by replacing it with an additional term in the axial force resulting in what in this paper is tentatively called combined tension. Some of the most common boundary conditions are discussed, and it is shown that for most cases of practical interest the boundary conditions can be expressed solely in terms of the combined tension.

• OSTI ID: 398030
• Report Number(s): CONF-940409--; ISBN 1-880653-10-9
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
CALCULATION METHODS
FLUID MECHANICS
FORCING FUNCTIONS
MARINE RISERS
MATHEMATICAL MODELS
OFFSHORE PLATFORMS
PRESSURE GRADIENTS
RESPONSE FUNCTIONS
WATER CURRENTS
WATER WAVES
WAVE FORCES