Influences of the turbulence model and the slot width on the transverse slot injection flow field in supersonic flows

Solving transient conduction and radiation heat transfer problems using the lattice Boltzmann method and the finite volume method

Plasma assisted cavity flame ignition in supersonic flows

Large eddy simulation of a hydrogen-fueled scramjet combustor with dual cavity

Performance evaluation and parametric analysis on cantilevered ramp injector in supersonic flows

Numerical study on supersonic combustion with cavity-based fuel injection

The phenomena of radiation-affected steady-laminar natural convection in a rectangular enclosure with two incomplete partitions are numerically examined under a large temperature difference. Pure convection, convection with surface radiation, and convection with surface rgas radiation are considered and compared. To examine the effects of two incomplete partitions on thermofluid dynamics behavior, they are assumed to be very thin ( ) and adiabatic. The finite-volume method FVM is used for solving the radiative transport equation, assuming that partitions are radiatively opaque. After validating the numerical procedures, the detailed radiation effects were sought. Based on the results of this study, it was found that the radiation played a significant role in developing the fluid dynamic and thermal distributions compared with cases without radiation. Once radiation was involved, the surface radiation was dominant over the gas radiation. The baffle configuration was also found to affect the results of radiation.

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The effects of radiation on natural convection in a rectangular enclosure divided by two partitions

The ignition phenomena of a solid fuel plate of polymethyl-methacrylate (PMMA), which is vertically positioned and exposed to a thermal radiation source, is numerically studied here. A two-dimensional transient model includes such various aspects as thermal decomposition of PMMA, gas phase radiation absorption, chemical reaction and air entrainment by natural convection. Whereas the previous studies consider the problem approximately in a one-dimensional geometry by neglecting the natural convection, the present model takes account of two-dimensional effect of radiation and air entrainment. The inert heating of the solid fuel is also taken into consideration. Radiative heat transfer is incorporated by the Discrete Ordinates Method (DOM) with local absorption coefficient evaluated with corresponding gas species concentrations. The thermal history of solid fuel plate shows a good agreement compared with experimental results. Despite of induced natural convective flow that takes away heat from the f...

Cho Young Han

Papers

Numerical study on supersonic combustion with cavity-based fuel injection

The effects of radiation on natural convection in a rectangular enclosure divided by two partitions

Radiative Ignition of Volatile Gases on a Vertical Fuel Plate

Case Study on Thermal Design Improvement of Hydrazine Monopropellant Pipelines for Satellite Propulsion System

Experimental Study of Turbulent Flow in a Circular Jet with Different Types of Fractal Turbulence Generators