Doctorat en Enginyeria Tèrmica
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Assessment of LES techniques for mitigating the Grey Area in DDES models
(2019)
Conference report
Open AccessThe slow RANS-LES transition is a well-known shortcoming in hybrid turbulence models such as DelayedDetached Eddy Simulation (DDES). The present work assesses the feasibility of 2D sensitive LES models for naturally ... -
Improving DES capabilities for predicting Kelvin-Helmholtz instabilities. Comparison with a backward-facing step DNS.
(2020-05-10)
Conference report
Restricted access - publisher's policyThe Detached Eddy Simulation (DES) turbulence model presented by Spalart et al. (Comments on the Feasibility of LES for Wings, and on a Hybrid RANS/LES Approach, [1]) in the late 90s, was specifically designed to simulate ... -
On the Feasibility of CFD for Transient Air Flow Simulations in Buildings
(2019)
Conference report
Restricted access - publisher's policyThe rapidly growing computational capacity hasmade CFD simulations an attractive tool for indoorenvironmental applications. The ability of CFD toperform transient simulations could be incorporatedinto model predictive ... -
A numerical approach for non-Newtonian two-phase flows using a conservative level-set method
(2020-04-01)
Article
Restricted access - publisher's policyA finite-volume based conservative level-set method is presented to numerically solve the non-Newtonian multiphase flow problems. One set of governing equations is written for the whole domain, and different phases are ... -
Development of Innovative Heat Sinks for Power Electronics Cooling within the More Electrical Aircraft
(European Conference for AeroSpace Sciences (EUCASS), 2019)
Conference report
Open Access -
DNS of drag-force and reactive mass transfer in gravity-driven bubbly flows
(2019)
Conference report
Restricted access - publisher's policy -
A pure virtual approach for managing platform portability on hybrid supercomputers
(2019)
Conference report
Restricted access - publisher's policyCommonly, the development of scientific computing software follows a stencilbased approach: the numerical methods and algorithms are introduced into computing systems through stencil data structures and sweeps (i.e. ... -
Detailed prediction of fluid-solid coupled phenomena of turbulent flow through reed valves
(Institute of Physics (IOP), 2019)
Conference report
Open AccessThe operation of self-actuated valves in suction and discharge processes plays a crucial role in the thermal efficiency and structural reliability of hermetic reciprocating compressors. The present work provides a thorough ... -
Assessment and comparison of a recent kinematic sensitive subgrid length scale in Hybrid RANS-LES
(Springer Nature, 2020)
Conference report
Restricted access - publisher's policyA recent kinematic sensitive subgrid length scale, Δlsq, initially developed for LES applications, is now considered for DES. Even though it is presented as a subgrid length scale, instead of a grey area mitigation (GAM) ... -
Numerical study of droplet deformation in shear flow using a conservative level-set method
(2019-11-02)
Article
Restricted access - publisher's policyThis paper is concerned with a numerical study on the behavior of a single Newtonian droplet suspended in another Newtonian fluid, all subjected to a simple shear flow. Conservative finite-volume approximation on a collocated ... -
An energy-preserving level set method for multiphase flows
(2020-01-01)
Article
Restricted access - publisher's policyThe computation of multiphase flows presents a subtle energetic equilibrium between potential (i.e., surface) and kinetic energies. The use of traditional interface-capturing schemes provides no control over such a dynamic ... -
A level-set model for mass transfer in bubbly flows
(2019-08-01)
Article
Restricted access - publisher's policyA level-set model is presented for simulating mass transfer or heat transfer in two-phase flows. The Navier-Stokes equations and mass transfer (or heat transfer) equation are discretized using a finite volume method on a ...