Nitrogen foam is expected to be an effective method extinguish large-scale fires and suppress explosions. The key its foaming process that gas nitrogen (N2) a solution are mixed uniformly in generator. Moreover, liquid (LN2) has been proposed as source of generate previous experimental works. In this paper, the flow heat transfer characteristics between explored by numerical methods, which then...

This paper puts forward an account of imaginative immersion. Elaborating on Kendall Walton’s thesis that imagining aims at the fictional truth, it first argues imaginings are inherently rule- or norm-governed: they ‘regulated’ by which is presented as fictionally true. It then shows imaginer can follow rule norm mandating her to imagine propositions truths either acquiring explicit beliefs abou...

Militias are violent actors, shown to be self-serving, and consistently act as spoilers of peace. So far, research has focused on their use instrumental violence directly undermine peace talks. Yet, militias have alternative, more indirect ways As such, we seek explore whether spoil by preventing nonviolent resistance (NVR) events, which previously been associated with an increased likelihood d...

In-pipe intelligent isolation plugging tools (IPTs) are crucial in pipeline maintenance. During the process, flow field around IPT changes drastically, resulting vibration and instability of process. Therefore, three foldable spoilers were designed at tail to reduce IPT. First, a disturbing experiment with was designed. A mathematical model pneumatic spoiler control system established regulate ...

Most spoilers are made from a sandwich structure with honeycomb component as its core. However, the core is sensitive to water ingress, causing damage control surface due weak moisture-resistance behavior. This study aimed conduct design and analysis of an improved composite for coreless spoiler. A spoiler aircraft, A320, was used case study. The weaknesses were identified through finite elemen...

Abstract. A commercial wind turbine blade equipped with root spoilers is analysed using 2D URANS computational fluid dynamics (CFD) to assess the unsteady impact of passive devices. In this work, we present CFD results from a non-rotating single thick section located at end and without spoiler. Computations were performed chord-based Reynolds number Rec=3×106. The spoiler size height approximat...

Scoring in Multi-Event Tournaments How much is a first place worth? Is the athlete who came once and third twice better than second three times? Different sports value these positions differently: (60, 54, 48) IBU biathlon, (25, 18, 15) F1 racing, (8, 7, 6) Diamond League athletics. Are choices based on anything? there even rational way to choose scoring vector of arbitrary length rank any numb...

Effective control of aerodynamic loads, such as maneuvering load and gust load, allows for reduced structural weight therefore greater efficiency. After a basic introduction in the types gusts current strategies aircraft, we outline conventional alleviation techniques using trailing-edge flaps spoilers. As these devices also function high-lift or inflight speed brakes, they are often too heavy ...