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| 1 | Liquid transport duringgas flow transients applied to liquid loading in long verticalpipes显示文摘 | Waltrich P J Falcone G Barbosa J R | 2015 | Experimental Thermal and Fluid Science2015，68，： | 1 |
| 2 | Air-side heat transfer and pressure drop characteristics of accelerated flow evaporators显示文摘 | Paulo J. Waltrich Jader R. Barbosa Christian J.L. Hermes Claudio Melo | 2010 | International Journal of Refrigeration2010，，2： | 1 |
| 3 | Axial development of annular,churn and slug flows in a long vertical tube显示文摘 | WALTRICH P J FALCONE G BARBOS A J R | 2013 | International Journal of Multiphase Flow2013，57，： | 1 |
| 4 | Axial development of annular, churn and slug flows in a long vertical tube显示文摘 | Paulo J. Waltrich Gioia Falcone Jader R. Barbosa | 2013 | International Journal of Multiphase Flow2013，，： | 1 |
| 5 | HFC系统中的CTB计算显示文摘1 引言 CTB和CSO都是互调失真的描述。当多个载波经过放大器或其他非线性系统部件,比如光发射机等时,电缆系统中就会产生这样的失真。最终的失真产物不仅影响模拟信号,也会引发数字信号的错误,因为失真已超出了模拟频谱的界限。 本文介绍了一个简单的Mathcad程序,用于在给定的有线电视频道中计算三次差拍的数量。该程序的计算结果可以比得上用更严格的算法计算得出的结果。 | Joseph Waltrich | 2000 | 有线电视技术2000，7，5： | 0 |
| 6 | A Study of Fluid Flow in Sediments and the Effect of Tidal Pumping显示文摘Offshore drilling and production operations can result in spills or leaks of hydrocarbons into seabed sediments, which can potentially contaminate these sediments with oil. If this oil later migrates to the water surface it has the potential for negative environmental impacts. For proper contingency planning and to avoid larger consequences in the environment, it is essential to understand mechanisms and rates for hydrocarbon migration from oil containing sediments to the water surface as well as how much will remain trapped in the sediments. It is believed that the amount of oil transported out of the sediment can be affected by tidal pumping, a common form of subterranean groundwater discharge(SGD). However, we could find no study experimentally investigating the phenomenon of fluid flow in subsea sediments containing oil and the effects of tidal pumping. This study presents an experimental investigation of tidal pumping to determine if it is a possible mechanism that may contribute to the appearance of an oil sheen on the ocean surface above a sediment bed containing oil. An experimental apparatus was constructed of clear PVC pipe allowing for oil migration to be monitored as it flowed out of a sand pack containing oil, while tidal pressure oscillations were applied in three different manners. The effect of tidal pumping was simulated via compression of air above the water(which simulated the increasing static head from tidal exchange). Experimental results show that sustained oil release occurred from all tests, and tests with oscillating pressure produced for longer periods of time. Furthermore, the experimental results showed that the oil migration rate was affected by grain size, oil saturation, and oscillation wave type. In all oscillating experiments the rate and ultimate recovery was less than the comparable static experiments. For the conditions studied, the experimental results indicate that with an oscillating pressure on top of a sand pack, movement of a non-replenishing source of oil is suppressed by pressure oscillation. | Paulo Waltrich John Whitehead Richard Hughes Karsten Thompson | 2017 | Journal of Earth Science2017，28，5： | 0 |
| 7 | 在模拟电缆系统中引入数字技术显示文摘目前,众所周知,电缆产业中可以引进数字技术一包括许多重要的业务以及高质量的图像,它对于开展许多交互式应用有着高安全性和大的潜力。当然,在一个现存的电缆系统中引入数字频道是富于挑战性的。与模拟情况不同,数字系统是更软件化的,因此,它需要额外的系统来支持。 | Joseph Waltrich | 2000 | 有线电视技术2000，7，3： | 0 |
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