Pressure-gain combustion has gained attention for airbreathing ramjet engine applications owing to its better thermodynamic efficiency and fuel consumption rate. In contrast with traditional detonation induced by a single wedge, the present study considers oblique shock interactions attached double wedges in hypersonic combustible flow. The temperature/pressure increases sharply across interact...

This technical note numerically and experimentally studies a vibration energy harvester (VEH) consisting of set two parallel elastic steel sheets (ESSs) piezoelectric patches (PZTs) in pipe flow. The roots the are fixed on base with PZTs to form double inverted flag harvesting system (DIF-VEHS). In this note, semi-circular receiving device (receiver) was added free end steel, cylinder installed...

auctions have been as a competitive method of buying and selling valuable or rare items for a long time. single-sided auctions in which participants negotiate on a single attribute (e.g. price) are very popular. double auctions and negotiation on multiple attributes create more advantages compared to single-sided and single-attribute auctions. nonetheless, this adds the complexity of the auctio...