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Publikācija: Estimation of Cross-Flow Influence on Spring-Mounted Cylinder in Triangular Cylinder Array

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Nosaukums oriģinālvalodā Estimation of Cross-Flow Influence on Spring-Mounted Cylinder in Triangular Cylinder Array
Pētniecības nozare 2. Inženierzinātnes un tehnoloģijas
Pētniecības apakšnozare 2.3. Mašīnbūve un mehānika
Autori Sabīne Upnere
Normunds Jēkabsons
Atslēgas vārdi cross-flow, cylinder array, flow-induced vibration s, OpenFOAM, turbulence
Anotācija Ongoing research is motivated by the need to better understand the cross-flow and cylinder mechanical interactions leading to vibration processes in close-packed triangular cylinder array. Computational Fluid Dynamics (CFD) simulations have been done with open source OpenFOAM software. Unsteady Reynolds Averaged Navier-Stokes equations for incompressible flows are solved by the finite volume method. Several two-equation turbulence models have been investigated: standard k-epsilon, RNG k-epsilon, and realisable k-epsilon model. Based on the pressure drop comparison between the calculations and the experiment, the RNG k-epsilon turbulence model has been chosen. CFD simulated quasi-steady-state flow serves as an initial condition for further transient modelling. A spring-mounted cylinder(s) is installed in an array of surrounding rigid cylinders. The neighbourhood rods’ influence on the oscillating rod in the bundle system is studied numerically. Oscillations of the cylinder have been described with mass-spring motion equation. Flexible supports allow vibrating the cylinder in both, the longitudinal and transverse direction under the action of unsteady hydrodynamic forces. Dynamic changes of mesh cells ensure that cylinder motion acts on bypassing flow.
DOI: 10.22616/ERDev2017.16.N162
Hipersaite: http://www.tf.llu.lv/conference/proceedings2017/Papers/N162.pdf 
Atsauce Upnere, S., Jēkabsons, N. Estimation of Cross-Flow Influence on Spring-Mounted Cylinder in Triangular Cylinder Array. No: 16th International Scientific Conference "Engineering for Rural Development" (ERDev2017): Proceedings. Vol.16, Latvija, Jelgava, 24.-26. maijs, 2017. Jelgava: 2017, 792.-797.lpp. ISSN 1691-5976. Pieejams: doi:10.22616/ERDev2017.16.N162
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ID 25727