Sequential combustion architectures rely on auto-ignition flame stabilization in the second stage combustor. Due to exponential temperature dependence of ignition delay time flames can respond hot spots generated by unsteady first combustion. In this paper, response is investigated extending an existing analytical model for acoustic waves so that it also accounts entropy waves. Explicit express...

We study (p)reheating in modular (closed string) inflationary scenarios, with a special emphasis on Kähler moduli/Roulette models. It is usually assumed that reheating in such models occurs through perturbative decays. However, we find that there are very strong non-perturbative preheating decay channels related to the particular shape of the inflaton potential (which is highly nonlinear and ha...

This paper focuses on the reheat furnace scheduling problem (RFSP) which is to assign the slabs to the reheat furnace, make the slab sequence for each furnace and determine the feed-in time and the residence time for each slab in order to reduce the unnecessary energy consumption reflected by minimising the objective under consideration. Differing from the traditional scheduling problem, the ac...

Improving the efficiency and flexibility of fossil-fired power plants remains a current challenging issue. In that regard, supercritical CO2 Brayton cycles offer promising potential. This paper aims to apply process synthesis approach design closed cycle using as working fluid with coal furnace heat source. The general methodology presented here for designing includes construction superstructur...

A typical problem of the leptogenesis scenario is the mismatch between the maximum reheat temperature implied by gravitino overproduction bound and the minimum temperature required to create thermally the lightest righthanded neutrino. We explore the possibility of baryogenesis via leptogenesis in the presence of low scale mass right-handed neutrino. In such a scenario, righthanded neutrinos ar...

Baryogenesis in models in which the fundamental scale is as low as 1 TeV in the context of large extra dimensions is a challenging problem. The requirement for the departure from thermal equilibrium necessarily ties any low-scale baryogenesis with that of a successful inflationary model, which automatically provides the out-of-equilibrium condition after the end of inflation. However, it is als...