Luca Sciacovelli
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View article: Heat-transfer effects in compressible turbulent boundary layers – a regime diagram
Heat-transfer effects in compressible turbulent boundary layers – a regime diagram Open
As shown by Wenzel et al. ( J. Fluid Mech. , vol. 930, 2022, A1), the Eckert number $Ec$ defined using the difference between recovery temperature $\bar{T}_r$ and wall temperature $\bar{T}_w$ can be understood as a meaningful quantity to c…
View article: A priori tests of turbulence models for compressible flows
A priori tests of turbulence models for compressible flows Open
A priori tests of turbulence models for the compressible Reynolds-Averaged Navier--Stokes (RANS) are performed by using Direct Numerical Simulations (DNS) data of zero-pressure-gradient flat-plate turbulent boundary layers. The DNS databas…
View article: Shock-wave/boundary layer interaction at high enthalpies
Shock-wave/boundary layer interaction at high enthalpies Open
The dynamics of a shock wave impinging on a freestream-perturbed high-enthalpy boundary layer is investigated by means of direct numerical simulation. The oblique shock impacts on a cooled flat-plate boundary layer with an angle of 10 degr…
View article: Shock impingement on a transitional hypersonic high-enthalpy boundary layer
Shock impingement on a transitional hypersonic high-enthalpy boundary layer Open
The dynamics of a shock wave impinging on a transitional high-enthalpy boundary layer out of thermochemical equilibrium is investigated for the first time by means of a direct numerical simulation. The freestream Mach number is equal to 9 …
View article: Numerical investigation of hypersonic turbulent boundary layers with high-temperature effects
Numerical investigation of hypersonic turbulent boundary layers with high-temperature effects Open
A hypersonic turbulent boundary layer over a flat plate is numerically investigated. The large Mach number and temperature values in the freestream (M e = 12.48 and T e = 594.3 K, respectively) lead to a high-enthalpy regime and to the occ…
View article: A high-order scheme for the numerical simulation of high-enthalpy hypersonic flows
A high-order scheme for the numerical simulation of high-enthalpy hypersonic flows Open
A high-order shock-capturing finite-difference scheme for scale-resolving numerical simulations of hypersonic high-enthalpy flows, involving thermal non-equilibrium effects, is presented. The suitability of the numerical strategy for such …
View article: Thermochemical non-equilibrium effects in turbulent hypersonic boundary layers
Thermochemical non-equilibrium effects in turbulent hypersonic boundary layers Open
A hypersonic, spatially evolving turbulent boundary layer at Mach 12.48 with a cooled wall is analysed by means of direct numerical simulations. At the selected conditions, massive kinetic-to-internal energy conversion triggers thermal and…
View article: Direct Numerical Simulation of hypersonic boundary layers inn chemical non-equilibrium
Direct Numerical Simulation of hypersonic boundary layers inn chemical non-equilibrium Open
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View article: Finite-rate chemistry effects in turbulent hypersonic boundary layers: A direct numerical simulation study
Finite-rate chemistry effects in turbulent hypersonic boundary layers: A direct numerical simulation study Open
The influence of high-enthalpy effects on hypersonic turbulent boundary layers is investigated by means of direct numerical simulations (DNS). A quasi-adiabatic flat-plate air flow at free-stream Mach number equal to 10 is simulated up to …
View article: Direct Numerical Simulation of a hypersonic boundary layer in chemical non-equilibrium
Direct Numerical Simulation of a hypersonic boundary layer in chemical non-equilibrium Open
The influence of high-enthalpy effects in hypersonic, spatially developing boundary layers is investigated by means of direct numerical simulations. The flow of a reacting mixture of nitrogen and oxygen over a flat plate at Mach 10, previo…
View article: Finite-rate chemistry effects in turbulent hypersonic boundary layers: a\n direct numerical simulation study
Finite-rate chemistry effects in turbulent hypersonic boundary layers: a\n direct numerical simulation study Open
The influence of high-enthalpy effects on hypersonic turbulent boundary\nlayers is investigated by means of direct numerical simulations (DNS). A\nquasi-adiabatic flat-plate air flow at free-stream Mach number equal to 10 is\nsimulated up …
View article: Dense-gas effects on compressible boundary-layer stability
Dense-gas effects on compressible boundary-layer stability Open
A study of dense-gas effects on the stability of compressible boundary-layer flows is conducted. From the laminar similarity solution, the temperature variations are small due to the high specific heat of dense gases, leading to velocity p…
View article: Small-scale dynamics of dense gas compressible homogeneous isotropic turbulence
Small-scale dynamics of dense gas compressible homogeneous isotropic turbulence Open
The present paper investigates the influence of dense gases governed by complex equations of state on the dynamics of homogeneous isotropic turbulence. In particular, we investigate how differences due to the complex thermodynamic behaviou…
View article: Direct numerical simulations of supersonic turbulent channel flows of dense gases
Direct numerical simulations of supersonic turbulent channel flows of dense gases Open
The influence of dense-gas effects on compressible wall-bounded turbulence is investigated by means of direct numerical simulations of supersonic turbulent channel flows. Results are obtained for PP11, a heavy fluorocarbon representative o…
View article: DNS of turbulent flows of dense gases
DNS of turbulent flows of dense gases Open
The influence of dense gas effects on compressible turbulence is investigated by means of numerical simulations of the decay of compressible homogeneous isotropic turbulence (CHIT) and of supersonic turbulent flows through a plane channel …
View article: Dense gas effects in inviscid homogeneous isotropic turbulence
Dense gas effects in inviscid homogeneous isotropic turbulence Open
A detailed numerical study of the influence of dense gas effects on the large-scale dynamics of decaying homogeneous isotropic turbulence is carried out by using the van der Waals gas model. More specifically, we focus on dense gases of th…