[PDF][PDF] 压力补偿灌水器分步式计算流体动力学设计方法
王立朋， 魏正英， 邓涛， 唐一平 - 农业工程学报, 2012 - researchgate.net
为提高压力补偿灌水器的设计和研发效率, 该文采用计算流体动力学(computational fluid
dynamics, CFD) 分析方法, 结合有限元分析技术, 提出一种压力补偿灌水器的分步式CFD …
dynamics, CFD) 分析方法, 结合有限元分析技术, 提出一种压力补偿灌水器的分步式CFD …
Using computational fluid dynamics to predict head losses in the auxiliary elements of a microirrigation sand filter
It is often assumed that total head losses in a sand filter are solely due to the filtration media
and that there are analytical solutions, such as the Ergun equation, to compute them …
and that there are analytical solutions, such as the Ergun equation, to compute them …
An improved finite element model for the hydraulic analysis of drip irrigation subunits considering local emitter head loss
J Wang, R Chen - Irrigation Science, 2020 - Springer
A good hydraulic design of drip irrigation systems requires an accurate evaluation of the
friction head loss that occurs in pipes as well as the local head loss induced by the presence …
friction head loss that occurs in pipes as well as the local head loss induced by the presence …
单翼迷宫式滴灌带进出水口数, 梯形流道齿数对抗堵塞性能的影响
TAO Juanqin, TAO Hongfei, LI Qiao… - Guan'gai Paishui …, 2023 - search.proquest.com
[目的] 研究进水口数, 梯形流道齿数, 出水口数对单翼迷宫式滴灌带抗堵塞性能的影响.[方法]
采用物理试验, 数值模拟, 建立线性数学模型等方法, 设计9 组工况进行数值模拟 …
采用物理试验, 数值模拟, 建立线性数学模型等方法, 设计9 组工况进行数值模拟 …
Design of microirrigation subunit of minimum cost with proper operation
F Carrión, JM Tarjuelo, D Hernández, MA Moreno - Irrigation Science, 2013 - Springer
Matlab software named PRESUD (Pressurized Subunit Design) was developed to identify
the optimum microirrigation subunit design using the annual water application cost per unit …
the optimum microirrigation subunit design using the annual water application cost per unit …
Experimental determination of local head loss of non-coaxial emitters in thin-wall lay-flat polyethylene pipes
J Wang, T Yang, T Wei, R Chen, S Yuan - Biosystems Engineering, 2020 - Elsevier
The hydraulic performance of thin-wall lay-flat polyethylene pipes with non-coaxial emitters
were evaluated in this study. Two experiments were performed to measure the dimensional …
were evaluated in this study. Two experiments were performed to measure the dimensional …
A computationally-efficient finite element method for the hydraulic analysis and design of subsurface drip irrigation subunits
J Wang, R Chen, T Yang, T Wei, X Wang - Journal of Hydrology, 2021 - Elsevier
A finite element model was developed for the hydraulic design of subsurface drip irrigation
subunits. The governing differential equation for steady-state water flow in a multi-outlet …
subunits. The governing differential equation for steady-state water flow in a multi-outlet …
Analysis of local head losses in microirrigation lateral connectors based on machine learning approaches
The presence of emitters along the lateral, as well as of connectors along the manifold,
causes additional local head losses other than friction losses. An accurate estimation of …
causes additional local head losses other than friction losses. An accurate estimation of …
Development of a simplified model for predicting the optimum lengths of drip irrigation laterals with coextruded cylindrical in-line emitters
Highlights•Simplified empirical model developed to predict the optimum lateral
lengths.•Model accounts for the 98.3% of the variation in the optimum lengths.•Model is valid …
lengths.•Model accounts for the 98.3% of the variation in the optimum lengths.•Model is valid …
[HTML][HTML] Applications of computational fluid dynamics in irrigation engineering
Computational fluid dynamics (CFD) techniques have become an important tool for
investigating and predicting flow behavior in many industrial and engineering processes. In …
investigating and predicting flow behavior in many industrial and engineering processes. In …