2篇
您的检索式：作者名="Fuchen Shi"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Assessment of coal gasification in a pressurized fixed bed gasifier using an ASPEN plus and Euler–Euler model显示文摘With the help of Aspen Plus,a two-dimensional unsteady CFD model is developed to simulate the coal gasification process in a fixed bed gasifier.A developed and validated two dimensional CFD model for coal gasification has been used to predict and assess the viability of the syngas generation from coal gasification employing the updraft fixed bed gasifier.The process rate model and the sub-model of gas generation are determined.The particle size variation and char burning during gasification are also taken into account.In order to verify the model and increase the understanding of gasification characteristics,a set of experiments and numerical comparisons have been carried out.The simulated results in the bed are used to predict the composition of syngas and the conversion of carbon.The model proposed in this paper is a promising tool for simulating the coal gasification process in a fixed bed gasifier. | Tamer M.Ismail Mingliang Shi Jianliang Xu Xueli Chen Fuchen Wang M.Abd El-Salam | 2020 | International Journal of Coal Science & Technology2020，7，3： | 1 |
| 2 | 北暖温带地区油松人工林天然发育恢复过程中的植被群落动态显示文摘本研究旨在揭示人工林在天然发育的恢复过程中其植物群落结构、多样性、种间关系和稳定性的变化特征。这种人工林的恢复过程依靠其与天然树种的交互作用实现,而不依赖于人为管理措施。在本研究中,依据油松(Pinus tabulaeformis)种群盖度占样方内乔木层盖度的比例,将八仙山国家级自然保护区的人工林天然发育序列划分为油松林、混交林和近自然3个典型阶段,并选择地域性天然次生林作为对照。以乔木层每木检尺数据为依据,重点关注群落的动态变化,包括群落结构、多样性、稳定性等方面。研究结果表明,在油松人工林天然发育的恢复过程中:(i)从混交林阶段开始形成稳定的优势种群组成,α多样性提高。(ii)乔木层径级结构由钟型向倒‘J’型转变,表明种群更新、发育状态良好。(iii)优势种群中胡桃楸(Juglans mandshurica)、蒙古栎(Quercus mongolica)、栓皮栎(Quercus variabilis)及紫椴(Tilia amurensis)的生态位宽度增加,但槲树(Quercus dentata)种群的生态位宽度在其发挥了先锋树种的作用之后下降。(iv)负关联和高生态位重叠(Levins生态位重叠指数>0.5)种群对比例下降。总之,保护区内的油松人工林在与天然树种交互作用的群落发育过程中促进了种群的更新和发育以及人工林群落的健康恢复,同时群落内的种间关系也在积极调整。本研究结论可以为揭示人工林群落天然发育过程中的动态变化特征提供有价值的参考。 | Zhenlu Qiu Mei Zhang Kefan Wang Fuchen Shi | 2023 | Journal of Plant Ecology2023，16，4： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员