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LINFLOW 1.41 Fluid-Elastics Investigation of an Off-shore System. Fluid dynamics: Methane gas U= 20 m/s Structure L=0.238 m Out. Dia.=0.210 m Inn. Dia.=0.190.

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Presentation on theme: "LINFLOW 1.41 Fluid-Elastics Investigation of an Off-shore System. Fluid dynamics: Methane gas U= 20 m/s Structure L=0.238 m Out. Dia.=0.210 m Inn. Dia.=0.190."— Presentation transcript:

1 LINFLOW 1.41 Fluid-Elastics Investigation of an Off-shore System. Fluid dynamics: Methane gas U= 20 m/s Structure L=0.238 m Out. Dia.=0.210 m Inn. Dia.=0.190 m E=210E9 Pa Dens=7800 kg/m3 Description The Structural Model

2 LINFLOW 1.42 The ANSYS first and second modal frequency are 2.47 Hz and 4.45 Hz. Structural Results for Pipe used in a Fluid- Elastics Analysis. The ANSYS Structure Dynamics The first structural modeThe second structural mode

3 LINFLOW 1.43 LINFLOW Fluid Dynamic Analysis of Unsteady Pressure into the System Mean static pressure plot Pressure oscillations into the flex loop Frequency spectrum of pressure oscillations

4 LINFLOW 1.44 LINFLOW Fluid-Elastics Analysis of the System. Eigenvalue Analysis of the Fluid-elastic mode Mode NumberFrequency (Hz)Damping Requirem ent E Real Part Imaginary Part E E E E E E E E E E E E E E E E E E E E E E E E E E E E-02 Eigenvector of the 13.th Fluid-elastic mode


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