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Improving the Power Generation Performance of a Solar Tower Using Thermal updraft Wind

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Energy and Power Engineering 2014年第11期6卷 362-370页

作者： Masataka Motoyama Kenichiro Sugitani Yuji Ohya Takashi Karasudani Tomoyuki Nagai Shinsuke Okada Department of Aeronautics and Astronautics Engineering Kyushu University Fukuoka Japan Research Institute for Applied Mechanics Kyushu University Fukuoka Japan

The purpose of this study is to improve the efficiency of the power generation system of a solar tower using fluid dynamics. The power generation system of a solar tower can be designed and constructed at relatively low cost. However, the energy output tends to be low for its physical size compared with other renewable energy production systems. The technical and scientific improvement of these types of generation systems has lost its momentum since the shutdown of the wellknown Spanish pilot plant “Manzanares Solar Chimney” in 1989, although it still has the potential to play a role in renewable energy in the future. We have focused on the tower component of the system to seek possible enhancements of the power output of the internal turbine. As a result of our fluid dynamic shape optimization, a diffuser-shaped tower was employed to increase the internal flow speed of a scaled model. The results show a remarkable improvement in the power output of the internal wind turbine.

关键词： Solar Tower Thermal updraft Wind Turbine Diffuser

Erratum to “Improving the Power Generation Performance of a Solar Tower Using Thermal updraft Wind” [Energy and Power Engineering Vol. 6 No. 11 (October 2014) 362-370]

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Energy and Power Engineering 2015年第6期7卷 255-257页

作者： Masataka Motoyama Yuji Ohya Takashi Karasudani Tomoyuki Nagai Shinsuke Okada Kenichiro Sugitani Department of Aeronautics and Astronautics Engineering Kyushu University Fukuoka Japan Research Institute for Applied Mechanics Kyushu University Fukuoka Japan

The original online version of this article (Masataka Motoyama, Kenichiro Sugitani, Yuji Ohya, et al. (2014) “Improving the Power Generation Performance of a Solar Tower Using Thermal updraft Wind”, 2014, 6, 362-370. http://***/10.4236/epe.2014.611031) was published in October, *** author wishes to correct the following error in text and Figures 9-11.

关键词： Solar Tower Thermal updraft Wind Turbine Diffuser

Buoyancy of convective-scale updrafts in the outer cores of sheared tropical cyclones

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Atmospheric and Oceanic Science Letters 2019年第1期12卷 58-65页

作者： LI Qingqing FANG Qiaoxian Pacific Typhoon Research Center Key Laboratory of Meteorological Disaster of the Ministry of Education Nanjing University of Information Science and Technology State Key Laboratory of Severe Weather Chinese Academy of Meteorological Sciences

In this paper,the authors present the statistical characteristics of the buoyancy of outer-core convective-scale updrafts in numerically simulated sheared tropical cyclones(TCs).The total buoyancy is predominantly positive in weak-to-strong ambient vertical shears,whereas much of the total buoyancy under an extreme shear environment becomes *** buoyancy positively contributes to the total buoyancy *** weakly and moderately sheared TCs,the updraft buoyancy is statistically significantly stronger downshear but smaller *** a downshear preference of strong buoyancy becomes less evident as the shear magnitude *** total buoyancy of updrafts shows a decreasing tendency with *** thermal and dynamic buoyancy do not significantly correlate with vertically averaged vertical mass *** also leads to no significant correlation between the total buoyancy and vertical mass fluxes of outer-core updrafts.

关键词： Tropical cyclone vertical wind shear outer core updraft buoyancy

Differences between Convective and Stratiform Precipitation Budgets in a Torrential Rainfall Event

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Advances in Atmospheric Sciences 2019年第5期36卷 495-509页

作者： Yongjie HUANG Yaping WANG Xiaopeng CUI Key Laboratory of Cloud-Precipitation Physics and Severe Storms Institute of Atmospheric PhysicsChinese Academy of Sciences University of Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science and Technology

Differences in rainfall budgets between convective and stratiform regions of a torrential rainfall event were investigated using high-resolution simulation data produced by the Weather Research and Forecasting(WRF) model. The convective and stratiform regions were reasonably separated by the radar-based convective–stratiform partitioning method, and the threedimensional WRF-based precipitation equation combining water vapor and hydrometeor budgets was further used to analyze the rainfall budgets. The results showed that the magnitude of precipitation budget processes in the convective region was one order larger than that in the stratiform region. In convective/stratiform updraft regions, precipitation was mainly from the contribution of moisture-related processes, with a small negative contribution from cloud-related processes. In convective/stratiform downdraft regions, cloud-related processes played positive roles in precipitation, while moisture-related processes made a negative contribution. Moisture flux convergence played a dominant role in the moisture-related processes in convective or stratiform updraft regions, which was closely related to large-scale dynamics. Differences in cloud-related processes between convective and stratiform regions were more complex compared with those in moisture-related *** liquid-and ice-phase microphysical processes were strong in convective/stratiform updraft regions, and ice-phase processes were dominant in convective/stratiform downdraft regions. There was strong net latent heating within almost the whole troposphere in updraft regions, especially in the convective updraft region, while the net latent heating(cooling) mainly existed above(below) the zero-layer in convective/stratiform downdraft regions.

关键词： convective rainfall stratiform rainfall precipitation budget updraft region downdraft region

Precipitation under Subtropical High Conditions:Evidence and Implications

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Atmospheric and Oceanic Science Letters 2009年第4期2卷 244-249页

作者： FENG Sha LIU Qi FU Yun-Fei Laboratory of Satellite Remote Sensing and Climate Environment University of Science and Teehnology of China Hefei 230026 China State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics （LASG） Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China

The impact of the subtropical high (STH) on precipitation was investigated on a daily timescale using matched NCEP and the Global Precipitation Climatology Project (GPCP) *** of the conditional probability (intensity) of precipitation under STH condi-tions with that under non-STH conditions suggests that the presence of the STH conditions has a limited impact on local *** the West Pacific Subtropical High (WPSH) and the North Atlantic Subtropical High (NASH),precipitation was only 30% lower under STH conditions than under non-STH *** STH conditions had somewhat more impact on precipitation intensity,but it was still 50% less than the intensity under non-STH conditions (mean of roughly 5 mm d 1).Pre-cipitation under STH conditions was found to be highly correlated with vertical *** updrafts occurring even under STH conditions are essential for frequent oc-currences and moderate intensities of precipitation.

关键词： subtropical high precipitation updraft probability intensity