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Experimental investigation of inlet distortion effect on performance of a micro gas turbine
(2018-09-01)
Article
Open AccessAn experimental study has been carried out to determine how inlet total-pressure distortion affects the performance of a micro gas turbine. An inlet simulator is designed and developed to produce and measure distortion ... -
A time-average filtering technique to improve the efficiency of two-layer wall models for large eddy simulation in complex geometries
(Elsevier, 2019-06-30)
Article
Restricted access - publisher's policyTwo-Layer wall models have been recurrently studied since they represent a good physical model for Large Eddy Simulations with underresolved wall regions. Specifically, those based on the Reynolds Averaged Navier-Stokes ... -
A second-order time accurate semi-implicit method for fluid–structure interaction problems
(2019-04-01)
Article
Restricted access - publisher's policyThis paper is concerned with numerical solution of fluid-structure inter-action (FSI) problems involving an incompressible viscous flow and an elasticstructure. A semi-implicit partitioned method with second-order ... -
Numerical study of binary droplets collision in the main collision regimes
(2019-08-15)
Article
Restricted access - publisher's policyDirect numerical simulation of binary droplets collision is done using a conservative level-set method. The Navier-Stokes and level-set equations are solved using a finite-volume method on collocated grids. A novel lamella ... -
Numerical study of rising bubbles with path instability using conservative level-set and adaptive mesh refinement
(Elsevier, 2019-06-15)
Article
Restricted access - publisher's policyThis paper focuses on three-dimensional direct numerical simulations of rising bubbles in the wobbling regime, and the study of its dynamical behavior for Eötvös number 1 ≤ Eo ≤ 10 and Morton number 1e−11 ≤ M ≤ 1e−9. ... -
Numerical and experimental study of absorption of H2O vapor in wavy falling film of LiBr aqueous solution in vertical tubes and in presence of non-absorbables
(Elsevier, 2019-04-01)
Article
Restricted access - publisher's policyOne of the main reasons for the discrepancies between theoretical predictions of absorption phenomena made by mathematical models when they are compared against experimental results under real conditions, are the presence ... -
On the solution of the problem of a drop falling against a plane by using a level set-moving mesh-immersed boundary method
(WIT Press, 2018)
Article
Open AccessA coupled Conservative Level Set – Moving Mesh – Immersed Boundary method is formulated and validated against the three-dimensional gravity-driven falling drop problem. First, by employing Conservative Level-Set (CLS) ... -
Numerical approach to study bubbles and drops evolving through complex geometries by using a level set – Moving mesh – Immersed boundary method
(2018-10-01)
Article
Restricted access - publisher's policyThe present work proposes a method to study problems of drops and bubbles evolving in complex geometries. First, a conservative level set (CLS) method is enforced to handle the multiphase domain while keeping the mass ... -
Direct numerical simulation of backward-facing step flow at Ret = 395 and expansion ratio 2
(2019-03-25)
Article
Restricted access - publisher's policyBackward-facing step (BFS) constitutes a canonical configuration to study wallbounded flows subject to massive expansions produced by abrupt changes in geometry. Recirculation flow regions are common in this type of flow, ... -
An immersed boundary method to conjugate heat transfer problems in complex geometries. Application to an automotive antenna
(2019-02-05)
Article
Restricted access - publisher's policyConsidering that the most common reason for electronic component failure is the excessive temperature level, an efficient thermal management design can prolong the operating life of the equipment, while also increasing its ... -
Fixed grid numerical modelling of frost growth and densification
(2019-03)
Article
Restricted access - publisher's policyA fixed-grid-porous-media method capable of simulating the growth and densification of frost sheets is here presented. A velocity field is calculated across the entire domain, in which a porous media treatment is given to ... -
Multiphysics modeling and experimental validation of low temperature accumulator for cryogenic space propulsion systems
(2019-01-01)
Article
Restricted access - publisher's policyWithin the framework of Low Thrust Cryogenic Propulsion (LTCP) systems, a low-temperature accumulator acting as thermal energy storage tank is an interesting option for cyclical processes under intermittent firings avoiding ...
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