|
|
|
|
|
Wenjie Shen, Suofang Wang and Xiaodi Liang
Impellers are utilized to increase pressure to ensure that a radial pre-swirl system can provide sufficient cooling airflow to the turbine blades. In the open literature, the pressurization mechanism of the impellers was investigated. However, the effect...
ver más
|
|
|
|
|
|
|
|
|
|
|
Kirttayoth Yeranee, Yu Rao, Chao Xu, Yueliang Zhang and Xiyuan Su
Additive manufacturing allows the fabrication of relatively complex cooling structures, such as triply periodic minimal surface (TPMS), which offers high heat transfer per unit volume. This study shows the turbulent flow heat transfer and thermal stress ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Rongdi Zhang, Pengchao Liu, Xirui Zhang, Wenxiong Xi and Jian Liu
With an increased inlet gas temperature and the homogenization of the combustion chamber outlet temperature, the endwalls of gas turbines are exposed to extremely high heat loads. The complex flow structure of turbine endwalls makes it difficult to cool ...
ver más
|
|
|
|
|
|
|
|
|
|
|
He Li, Xiaoming Yang, Chen Wang, Shang Shi, Rubing Ma and Yidan Yuan
Steam condensation plays an important role in various engineering processes due to its excellent heat transfer performance. However, condensation in the presence of noncondensable gas has attracted great attention in recent years since noncondensable gas...
ver más
|
|
|
|
|
|
|
|
|
|
|
Dongjie Yan, Hongmei Jiang, Jieling Li, Wenbo Xie, Zhaoguang Wang, Shaopeng Lu and Qiang Zhang
In high-pressure turbines, there is a large difference in temperature between the mainstream and the turbine blade surface. Most of the turbine blade tip heat transfer studies were conducted under the assumption that the Over-Tip-Leakage (OTL) flow field...
ver más
|
|
|
|
|
|
|
|
|
|
|
Xing Yang, Hang Wu and Zhenping Feng
In this paper, detailed flow patterns and heat transfer characteristics of a jet impingement system with extended jet holes are experimentally and numerically studied. The jet holes in the jet plate present an inline array of 16 × 5 rows in the streamwis...
ver más
|
|
|
|
|
|
|
|
|
|
|
Qinghua Deng, Huihui Wang, Wei He and Zhenping Feng
The leading edge is the critical portion for a gas turbine blade and is often insufficiently cooled due to the adverse effect of Crossflow in the cooling chamber. A novel internal cooling structure, wall jet cooling, can suppress Crossflow effect by chan...
ver más
|
|
|
|
|
|
|
|
|
|
|
Hongyu Ye, Xuezhen Wu, Gaoqiang Guo, Dayong Li and Yujing Jiang
Natural gas hydrate (NGH) dissociation is a heat-absorbing process, and the cooling around the wellhead is more pronounced during depressurization production. Low temperature will cause NGH regeneration or ice formation, blocking gas flow paths and reduc...
ver más
|
|
|
|
|
|
|
|
|
|
|
Matthew Courtis, Alexander Murray, Ben Coulton, Peter Ireland and Ignacio Mayo
To meet the challenges of increased thermal loads and performance demands on aero-engine turbine blades, more advanced cooling techniques are required. This study used a modification of the well-known Goldstein equation to predict film effectiveness for ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Yuanlin Jing, Feng Guo, Yiping Wang and Qunwu Huang
Due to the continuity and complexity of chemical systems, piping and operating conditions will have a significant effect on the on-line continuous weighing of materials inside process equipment. In this paper, a mathematical model of the weighing system ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Sondre Norheim and Shokri Amzin
Gas turbine performance is closely linked to the turbine inlet temperature, which is limited by the turbine guide vanes ability to withstand the massive thermal loads. Thus, steam cooling has been introduced as an advanced cooling technology to improve t...
ver más
|
|
|
|
|
|
|
|
|
|
|
Ken-Ichiro Takeishi, Robert Krewinkel, Yutaka Oda and Yuichi Ichikawa
In the near future, when designing and using Double Wall Airfoils, which will be manufactured by 3D printers, the positional relationship between the impingement cooling nozzle and the heat transfer enhancement ribs on the target plate naturally becomes ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Lorenzo Cocchi, Alessio Picchi and Bruno Facchini
Experimental activity has been performed to study different impingement cooling schemes in static and rotating conditions. Geometry replicates a leading-edge cold bridge system, including a radial supply channel and five rows of film-cooling and showerhe...
ver más
|
|
|
|
|
|
|
|
|
|
|
Mariana Ribas-Ribas, Gianna Battaglia, Matthew P. Humphreys and Oliver Wurl
Carbon dioxide (CO2) fluxes between the ocean and atmosphere (FCO2) are commonly computed from differences between their partial pressures of CO2 (?pCO2) and the gas transfer velocity (k). Commonly used wind-based parameterizations for k imply a zero int...
ver más
|
|
|
|
|
|
|
|
|
|
|
Daniel B. Bung and Daniel Valero
As with most high-velocity free-surface flows, stepped spillway flows become self-aerated when the drop height exceeds a critical value. Due to the step-induced macro-roughness, the flow field becomes more turbulent than on a similar smooth-invert chute....
ver más
|
|
|
|
|
|
|
|
|
|
|
Song Xue and Wing F. Ng
This article provides an overview of gas turbine blade tip external cooling technologies. It is not the intention to comprehensively review all the publications from past to present. Instead, selected reports, which represent the most recent progress in ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Song Xue and Wing F. Ng
This article provides an overview of gas turbine blade tip external cooling technologies. It is not the intention to comprehensively review all the publications from past to present. Instead, selected reports, which represent the most recent progress in ...
ver más
|
|
|
|
|
|
|
|
|
|
|
Edgar L. Andreas, Penny Vlahos and Edward C. Monahan
It is not known whether sea spray droplets can act as agents that influence air-sea gas exchange. We begin to address that question here by evaluating the time scales that govern spray-mediated air-sea gas transfer. To move between the interior of a spra...
ver más
|
|
|
|
|
|
|
|
|
|
|
Jirí Vondál,Jirí Hájek
s-
|
|
|
|
|
|
|
|
|
|
|
Sascha E. Oswald, Marco Griepentrog, Mario Schirmer, Gerd U. Balcke
Pág. 3579 - 3590
|
|
|
|
|
|