نتایج جستجو برای: hydrodynamic performance
تعداد نتایج: 1072666 فیلتر نتایج به سال:
This paper describes the modelling and testing of mm-scale hydrodynamic bearings which are being developed to improve the efficiency of a cm-scale turbine energy harvester, whose efficiency was previously limited by poorly lubricated commercial jewel-bearings. The bearings were fabricated using DRIE and their performance was assessed using a custom built MEMS tribometer. Results demonstrate tha...
This paper describes the modelling and testing of mm-scale hydrodynamic bearings which are being developed to improve the efficiency of a cm-scale turbine energy harvester, whose efficiency was previously limited by poorly lubricated commercial jewel-bearings. The bearings were fabricated using DRIE and their performance was assessed using a custom built MEMS tribometer. Results demonstrate tha...
The shape of the carapace protecting the body of boxfishes has been attributed an important hydrodynamic role in drag reduction and in providing automatic, flow-direction realignment and is therefore used in bioinspired design of cars. However, tight swimming-course stabilization is paradoxical given the frequent, high-performance manoeuvring that boxfishes display in their spatially complex, c...
background and aims: adenovector gene transfer induces inflammatory response that finally leads to vector removal from delivered site. the effect of hydrodynamic pre-injection on adenovector mediated liver inflammation remained elusive. materials and methods: different mice groups were pre-treated by hydrodynamic saline, dexamethasone or nothing prior to adeno-luciferase administration. their s...
This paper conducts a numerical investigation on the hydrodynamic performance of portable autonomous underwater vehicle (AUV). The AUV is designed to cruise and perform some tasks autonomously in world. However, its dynamic strongly affected by effects. Therefore, it crucial investigate for accurate modeling control. In this work, based AUV, comprehensive was conducted adopting computational fl...
To investigate the effect of group gliding formation on hydrodynamic performance manta rays, numerical simulations were used to drag, lift and pressure distribution multiple rays in tandem, triangular diamond-shaped arrangements. The simulation results show that leader ray at head always suffers least most cases, companion tail drag. flow field shows drag reduction mainly comes from high low zo...
By investigating the research in the field of planing vessels, limited research has been conducted to investigate the behavior and other hydromantic parameters. Given that such vessels can have better hydrodynamic performance than similar vessels, research and study is one of the needs and priorities of designers. With this purpose, this study examines the effects of the transverse steps hydrod...
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