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您的检索式：作者名="Kamran Rasool"
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| 1 | Simulation of subcritical flow pattern in 180° uniform and convergent open-channel bends using SSIIM 3-D model显示文摘In meandering rivers, the flow pattern is highly complex, with specific characteristics at bends that are not observed along straight paths. A numerical model can be effectively used to predict such flow fields. Since river bends are not uniform-some are divergent and others convergent-in this study, after the SSIIM 3-D model was calibrated using the result of measurements along a uniform 180° bend with a width of 0.6 m, a similar but convergent 180° bend, 0.6 m to 0.45 m wide, was simulated using the SSIIM 3-D numerical model. Flow characteristics of the convergent 180° bend, including lengthwise and vertical velocity profiles, primary and secondary flows, lengthwise and widthwise slopes of the water surface, and the helical flow strength, were compared with those of the uniform 180° bend. The verification results of the model show that the numerical model can effectively simulate the flow field in the uniform bend. In addition, this research indicates that, in a convergent channel, the maximum velocity path at a plane near the water surface crosses the channel's centerline at about a 30° to 40° cross-section, while in the uniform bend, this occurs at about the 50° cross-section. The varying range of the water surface elevation is wider in the convergent channel than in the uniform one, and the strength of the helical flow is generally greater in the uniform channel than in the convergent one. Also, unlike the uniform bend, the convergent bend exhibits no rotational cell against the main direction of secondary flow rotation at the 135° cross-section. | Rasool GHOBADIAN Kamran MOHAMMADI | 2011 | Water Science and Engineering2011，4，3： | 1 |
| 2 | Humidity Effect on Transport Properties of Titanium Dioxide Nanoparticles显示文摘金红石 TiO 2 nanoparticles 与 ∼30nm TiO 2 nanoparticle 的一条平均直径用一起沉淀方法被综合设备然后在玻璃上被制作底层。铝电极用影印石版术和真空蒸发被定义。TiO 2 nanoparticles 的暂停用超声的焦虑在 isopropanol 被准备。nanoparticles 在电极之间被扔。设备被交流电的大小在 40%–90% 亲戚湿度(RH ) 测试。TiO 2 nanoparticles 的阻抗在 100Hz 从 40% ~ 90% 随 RH 的增加到大约 80 次减少。反应时间和恢复时间是 4s 和 5s,分别地在 40% 和 90% RH 之间。在 100Hz,在 40%–90% RH 的范围的铝电极 TiO 2 nanoparticle 设备的敏感是 17M/%RH。当 RH 增加,复杂模量分析也在 TiO 2 nanoparticles 的 DC 电导率证实增加。 | Muhammad Usman Kamran Rasool S. S. Batool Z. Imran Mushtaq Ahmad Hira Jamil M. A. Rafiq M. M. Hasan | 2014 | Journal of Materials Science & Technology2014，30，8： | 0 |
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