000180229 001__ 180229
000180229 005__ 20190316235441.0
000180229 0247_ $$2doi$$a10.5075/epfl-thesis-5426
000180229 02470 $$2urn$$aurn:nbn:ch:bel-epfl-thesis5426-4
000180229 02471 $$2nebis$$a7331404
000180229 037__ $$aTHESIS
000180229 041__ $$aeng
000180229 088__ $$a5426
000180229 245__ $$aA 3D ALE Finite Element Method for Two-Phase Flows with Phase Change
000180229 269__ $$a2012
000180229 260__ $$aLausanne$$bEPFL$$c2012
000180229 300__ $$a201
000180229 336__ $$aTheses
000180229 520__ $$aA new numerical method is proposed to study two-phase flow  and heat transfer for interlayer cooling of the new  generation of multi-stacked computer chips. The fluid flow  equations are developed in 3-dimensions based on the  Arbitrary Lagrangian-Eulerian formulation (ALE) and the  Finite Element Method (FEM), creating a new two-phase method  with an improved model for the liquid-gas interface. A new  adaptive mesh update procedure is also proposed for effective  management of the mesh at the two-phase interface to remove,  add and repair surface elements, since the computational mesh  nodes move according to the flow. The Lagrangian description  explicitly defines the two-phase interface position by a set  of interconnected nodes which ensures a sharp representation  of the boundary, including the role of the surface tension.  The new methodology for computing the curvature leads to  accurate results with moderate programming effort and  computational cost. Static and dynamic tests have been  carried out to validate the method and so far all the  obtained results have compared well to analytical solutions  and experimental results found in the literature,  demonstrating that the new proposed methodology to simulate  two-phase flows provides good accuracy to describe the  interfacial forces and bubble dynamics. The new code was then  used to simulate elengated bubble flows in square  microchannels, being considered for two-phase interlayer  cooling in future 3D-IC compute chips.
000180229 6531_ $$aTwo-Phase flows
000180229 6531_ $$aSurface tension
000180229 6531_ $$aCurvature
000180229 6531_ $$aArbitrary Lagrangian Eulerian
000180229 6531_ $$aFinite Element Method
000180229 6531_ $$aAdaptivemesh refinement
000180229 6531_ $$aÉcoulement biphasique
000180229 6531_ $$aTension de Surface
000180229 6531_ $$aCourbure
000180229 6531_ $$aLagrangienne Eulérienne Arbitraire
000180229 6531_ $$aMéthodes des Éléments Finis
000180229 6531_ $$aAdaptation de Maille
000180229 700__ $$0243073$$aRabello Dos Anjos, Gustavo$$g184564
000180229 720_2 $$0240577$$aThome, John Richard$$edir.$$g108776
000180229 720_2 $$aBorhani, Navid$$edir.
000180229 8564_ $$s23058026$$uhttps://infoscience.epfl.ch/record/180229/files/EPFL_TH5426.pdf$$yTexte intégral / Full text$$zTexte intégral / Full text
000180229 909C0 $$0252128$$pLTCM$$xU10312
000180229 909CO $$ooai:infoscience.tind.io:180229$$pthesis$$pthesis-bn2018$$pDOI$$pSTI$$qDOI2$$qGLOBAL_SET
000180229 918__ $$aSTI$$cIGM$$dEDME
000180229 919__ $$aLTCM
000180229 920__ $$b2012
000180229 970__ $$a5426/THESES
000180229 973__ $$aEPFL$$sPUBLISHED
000180229 980__ $$aTHESIS