An incremental-stencil WENO reconstruction for simulation of compressible two-phase flows

Utilization of Nonthermal Plasma in Pulse Detonation Engine Ignition

Numerical simulation of liquid droplet breakup in supersonic flows

A review of active control approaches in stabilizing combustion systems in aerospace industry

Numerical evaluation of acoustic characteristics and their damping of a thrust chamber using a constant-volume bomb model

Numerical analysis on interactions of vortex, shock wave, and exothermal reaction in a supersonic planar shear layer laden with droplets

Analysis of Operating Diagram for H 2 /Air Rotating Detonation Combustors under Lean Fuel Condition

Effects of elevated ambient pressure on the disintegration of impinged sheets

Fluid-structure coupling of linear elastic model with compressible flow models

Effects of silicone rubber and aerogel blanket-walled tubes on H 2 /Air gaseous detonation

Brief review on passive and active methods for explosion and detonation suppression in tubes and galleries

Evolution of flame kernel in one eddy turnover of high-speed droplet laden shear layers

Thermal auto-ignition in high-speed droplet-laden mixing layers

Numerical study of a planar shock interacting with a cylindrical water column embedded with an air cavity

This paper performs a numerical study on the interaction of a planar shock wave with a water column embedded with/without a cavity of different sizes at high Weber numbers. The conservative-type Euler and non-conservative scalar two-equations representing the transportation of two-phase properties consist of the diffusion interface capture models. The numerical fluxes are computed by the Godunov-type Harten-Lax–van Leer contact Riemann solver coupled with an incremental fifth-order weighted essentially non-oscillatory (WENO) scheme. A third-order total variation diminishing (TVD) Runge–Kutta scheme is used to advance the solution in time. The morphology and dynamical characteristics are analysed qualitatively and quantitatively to demonstrate the breakup mechanism of the water column and formation of transverse jets under different incident shock intensities and embedded-cavity sizes. The jet tip velocities are extracted by analysing the interface evolution. The liquid column is prone to aerodynamic breakup with the formation of micro-mist at later stages instead of liquid evaporation because of the weakly heating effects of the surrounding air. It is numerically confirmed that the liquid-phase pressure will drop below the saturated vapour pressure, and the low pressure can be sustained for a certain time because of the focusing of the expansion wave, which accounts for the cavitation inside the liquid water column. The geometrical parameters of the deformed water column are identified, showing that the centreline width decreases but the transverse height increases nonlinearly with time. The deformation rates are nonlinearly correlated under different Mach numbers. The first transverse jet is found for a water column with an embedded cavity, whereas the water hammer shock and second jet do not occur under the impact of low intensity incident shock waves. The $x$ -velocity component recorded at the rear stagnation point can remain unchanged for a comparable time after a declined evolution, which indicates that the downstream wall of the shocked water ring somehow moves uniformly. It can be explained that the acceleration of the downstream wall is balanced by the trailing shedding vortex, and this effect is more evident under higher Mach numbers. The increased enstrophy, mainly generated at the interface, demonstrates the competition of the baroclinic effects of the shock wave impact over dilatation.

Numerical Modeling and Studies of Ignition Transients in End-Burning-Grain Solid Rocket Motors

Construction of one-step H2/O2 reaction mechanism for predicting ignition and its application in simulation of supersonic combustion

Numerical investigation of H 2 /air combustion instability driven by large scale vortex in supersonic mixing layers

Dispersion of particles in wall-bounded particle-laden turbulent flows with high wall permeability

Passive scalar mixing in Mc <1 planar shear layer flows

Ignition, flame propagation and extinction in the supersonic mixing layer flow

Flow dynamics of a spiral-groove dry-gas seal

Analysis of combustion instability via constant volume combustion in a LOX/RP-1 bipropellant liquid rocket engine

Two-phase micro- and macro-time scales in particle-laden turbulent channel flows

Large eddy simulation of a 3-D spatially developing turbulent round jet

Dense gas-particle flow in vertical channel by multi-lattice trajectory model

Numerical Analysis of a Spiral-groove Dry-gas Seal Considering Micro-scale Effects

Large-eddy Simulation of Near-field Dynamics in a Particle-laden Round Turbulent Jet

Inter-phase interaction in a turbulent, vertical channel flow laden with heavy particles. Part II: Two-phase velocity statistical properties

A study on turbulence modulation via an analysis of turbulence anisotropy-invariants

Inter-phase interaction in a turbulent, vertical channel flow laden with heavy particles. Part I: Numerical methods and particle dispersion properties

Particle modulations to turbulence in two-phase round jets

On steady state computation of turbulent flows usingk–ɛ models approximated by the time splitting method

Large Eddy Simulation of a Particle-Laden Turbulent Backward-Facing Step Flow