Large-eddy simulation (LES) of kerosene spray combustion in a model supersonic combustor with cavity flame holder is carried out. Kerosene is injected through the ceiling of the cavity. The subgrid-scale (SGS) turbulence stress tensor is closed via the Smagorinsky’s eddyviscosity model, chemical source terms are modelled by a finite rate chemistry (FRC) model, and a four-step reduced kerosene c...

Constant mean curvature (CMC) hypersurfaces in a compact Riemannian manifold (Mm+1, g) constitute an important class of submanifolds and have been studied extensively. In this paper we are interested in degenerating families of such submanifolds which ‘condense’ to a submanifold Kk ⊂ Mm+1 of codimension greater than 1. It is not hard to see that the closer a CMC hypersurface is (e.g. in the Hau...

According to the recent European guide lines concerning the smart grids, the generation of electricity and heat from poultry derived wastes based on hightemperature thermal destruction techniques, i.e. combustion, could be a promising local waste management solution [1-5]. In this work we set out to investigate the technical and the economic feasibility of the combustion of poultry litter blend...

Accurate retrieval of wildland fire temperature from remote imagery would be useful in improving prediction of fire propagation and estimates of fire effects such as burn severity and gas and particle production. The feasibility of estimating temperatures for subpixel fires by spectral unmixing has been established by previous work with the AVIRIS sensor. However, this unmixing approach can als...

The tandem differential mobility analyzer (TDMA) technique was applied to determine the hygroscopicity and volatility of atmospheric ultrafine particles in three sites of urban Gwangju, industrial Yeosu, and coastal Taean in South Korea. A database for the hygroscopicity and volatility of the known compositions and sizes of the laboratory-generated particles wasfirst constructed for comparison ...

^ A continuously sampling, time-of-flight mass spectrometer has been used to measure relative species concentrations in a two-dimensional, hydrogen-air combustion wake at mainstream f; Mach numbers exceeding 5. The experiments»which were conducted in a free piston shock ! tunnel, yielded distributions of hydrogen, oxygen, nitrogen, water and nitric oxide at stagnation enthalpies ranging from 5....

We undertake the modeling of combustion highly swirling fuel sprays using Flamelet-Generated-Manifold (FGM) combustion-chemistry-reduction technique, especially use adiabatic tables generated with non-premixed chemical reactors. Preceding investigations indicated that thus can present uncertainties when used for predicting finite-rate phenomena and different flame modes, these are important bet...

Combustion characteristics (Introduction) .................................................................................................... 1 Combustion fundamentals (What it is) ..................................................................................................... 1 What it is not ...................................................................................................

in this work, the potential of auto-ignition of heavy oil during in-situ combustion (isc) process was studied. kinetic studies were carried out using thermo gravimetric analyzer (tga), differential scanning calorimetry (dsc) and accelerating rate calorimetric (arc) techniques. effects of oxygen partial pressure, reservoir pressure and clay on auto ignition condition were investigated on a numbe...